The Production and Marketing of Mineral Water in 21st Century Spain

Since the end of the last century, Spain has become a country of reference in the European Union due to its volume of bottled mineral water. This study aims to analyze the evolution of the key aspects of this sector over the last two decades. Through this research, it has been verified that (i) Spanish mineral water has been analyzed for a long time from a medicinal and geochemical point of view, and not so much in commercial analysis; (ii) water has great diversity due to the abundance of hydrogeological domains that this country offers; (iii) a very strict legal framework must be complied for its commercialization; (iv) its consumption has been growing; and (v) the business structure is characterized by the predominance of a small group of companies, with a very important role in multinational corporations. Three nature reserves: Montseny, Sierra Nevada, and Guadarrama Mountains, stand out from the rest of the Spanish territory in terms of catchment and packaging of natural mineral water, which is an increasingly strategic resource.


Introduction
The development of the bottled water industry in Europe occurred from 1960 onwards. From a business point of view, important processes of concentration and internationalization began, as the leading companies absorbed smaller ones, giving rise to large multinational corporations competing in the world market. In fact, a geographical expansion began through the establishment of points of sale abroad or the exploitation of springs in other countries, in such a way that some large water producers acquired the character of multinational companies [1]. For example, the French supply of bottled water was historically configured around two business groups that had a large number of springs. On the one hand, there is Boissois Souchon Neuvesel (BSN), later called the Danone Group. The group also established itself in the Italian and Spanish markets (Font Vella, Fonter, and Lanjarón), among others. On the other hand, there is the group mainly controlled by Nestlé-Waters, which includes its own brand, Aquarel, and is also present in other countries such as Italy, Belgium, Portugal, and Spain (Viladrau and San Narciso brands). The magnitude of this duopoly led to the intervention of the European Commission in order to protect the interests of French consumers. The intervention allowed the wine group led by Pierre Castel to enter the sector through the acquisition of brands that were in the hands of Perrier [2].
to an international one. The advertising campaigns to disseminate the health benefits of consuming quality mineral water are no less important and necessary.
The traditional use of mineral water in Spain over the decades for medicinal purposes in spas, and recently, since the sixties, as a product of mass consumption, has generated the need to broaden knowledge about this topic. Hence, there is an abundance of studies that have analyzed its characteristics of mineral uniqueness, as well as all the related and complementary activity generated around them.
In Europe, the history of natural mineral water begins in spas. Initially, they are only seen as a genuine "medicine," so that it is the users themselves who, during the period of time these centers remain closed, outside the summer months, request those responsible for them to facilitate mineral-medicinal waters [16]. Indeed, the use of mineral and thermal waters is the oldest form of disease treatment; more than two thousand years ago they began to be applied orally or in the form of baths for their therapeutic properties. Throughout history, the different civilizations that arrived on the Iberian Peninsula discovered many mineral-medicinal springs and used them to treat diseases [17]. Bathing in the water, the tranquility of the environment, the climate, and nature are four factors that gave rise to the birth of spas in specific areas of Spain [18][19][20].
In the 17th century, the first initiatives dedicated to bottling medicinal mineral waters emerged, but it was not until the 18th century that their commercialization began to become widespread. At the beginning of the 19th century, the properties of the sources began to be assessed, and a legal text was drafted declaring them to be of "public interest." In parallel and at that time, the great popular revival of spas took place, which led directly to the birth of the commercialization of mineral waters. The increase in consumption of bottled water has gone hand-in-hand with the improvement of its quality and the standard of living, and experienced important growth after the Second World War as a consequence of the economic recovery. In the 1960s, new marketing, advertising, and distribution strategies made mineral water go from being purchased in pharmacies to being available in all food retail establishments [21]. In this sense, and according to Aguilera et al. [22] and Maraver Eyzaguirre [15], three periods in the development of the bottled water sector can be differentiated: (i) "medicinal water," limited to its marketing by pharmacies; (ii) "table water," sold by pharmacies and, above all, in hospitality; (iii) "water, a product for consumption," distributed in all commercial establishments.

Concept of Mineral Water
Spanish legislation does not define mineral water generically, but it does define the different types considered in current regulations. What can be deduced, according to the classifications that are made, is that underground water, due to its physical-chemical characteristics, can be included in what is defined by the Mining Law and the Technical-Sanitary Regulation for the preparation, circulation, and trade of bottled drinking water [23]. Mineral waters saturate the pores and fissures of geological structures, more or less extensively, but confined with less permeable formations. They manifest on the surface through fractures or discontinuities in the terrain or small outcrops of the formations that contain them, or they do so artificially when they are reached through wells, boreholes, and explorations [24].
Bottled drinking water is a complex product, subject to important conditions and requirements to carry out its packaging and marketing. As a consequence, it can be argued that mineral water is one of the most regulated food products and subjected to greater demands by the legislature [25]. Bottled drinking water is regulated at European level by Directive 2009/54/EC, which was merged with Directive 80/777/EEC and Directive 96/70/EEC, relating to mineral waters. In Spain, by Royal Decrees 1798/2010 and 1799/2010, of 30 December, which regulates the exploitation, processing, and marketing of bottled natural and spring mineral water, and of water prepared for human consumption.
According to the aforementioned regulations, natural mineral water and spring water, in their origin, can only be subjected to the separation of unstable natural elements: iron, manganese, and sulfur compounds, as well as arsenic in certain natural and spring mineral waters, by filtration or decantation; fluorides using alumina; and removal of other unwanted components by other processes. The total or partial elimination of free carbon dioxide by exclusively physical procedures is also allowed, the incorporation or reincorporation of carbon dioxide, and the use of nitrogen as a technological aid (bottling gas) in natural mineral water and spring water, to ensure the stability of the containers.
According to the aforementioned regulations, different types of bottled water can be distinguished: • Natural mineral water is microbiologically healthy and has its origin in a stratum or underground reservoir, which originates from a spring or is artificially captured by boreholes, a well, a ditch, or underground passages, or by combining any of these systems. They can be clearly distinguished from other types of ordinary drinking water by their constitution, characterized by the content of minerals, trace elements and other components, by their chemical consistency, and by their original purity.

•
Spring water is that of underground origin that emerges spontaneously on the surface or is captured through work done for this purpose, with the natural characteristics of purity that allow for its consumption; its characteristics remain intact, given the underground origin of the water, by means of the natural protection of the aquifer against any risk of contamination. • Prepared water is different from natural and spring mineral water because it can come from any source and undergo the authorized physical-chemical treatments necessary to meet the characteristics of drinking water.
On the other hand, the operators of bottled drinking water are those who, by nature or legally, with authorizations granted by the competent official organizations, dedicate their jobs to the handling of prepared bottled water. The label of each water container offers information regarding its characteristics, obtained through criteria set by the regulations and based on physiochemical analyses, and when necessary, from pharmacological, physiological, and clinical examinations carried out according to scientifically recognized methods (Table A1).

Analysis of the Hydrogeological Domains of Spain
Spain has a wide variety of mineral waters, which is explained by the abundant hydrogeological domains that exist in its peninsular and insular territory. In the Iberian Peninsula, three major geological units are distinguished: the Hesperic massif, alpine ridges, and tertiary depressions. These contribute to the physiochemical characteristics of the water being distributed differentially in the diverse geological domains [24]. Although this does not mean that certain hydrochemical facies or certain types of water are unique to a given environment. However, in general, there are trends that relate the predominant hydrochemical facies with the large geological units, depending on the characteristics they present [26].
In order to deepen our understanding of the technical characteristics and physiochemical composition of mineral water in Spain, by studying the mechanisms that generate it and the characteristics of the formation in which it is collected, as well as from the study of the geological, hydrogeological, and hydrochemical models that gives rise to it, for its optimal use and effective protection, the IGME (Instituto Geológico y Minero de España) developed the research project titled "Genetic aspects of mineral and thermal water: the relationship between their physicochemical characteristics and the geology of the environment " [27]. There were three main objectives: • Identify areas where there is congruence between the geochemical characteristics of the water and the geology of the environment, which define hydromineral domains.

•
Identify points with anomalous geochemical characteristics with respect to the geology of the environment that can be considered unique, both for their general composition (hydrochemical facies) and for the content of certain elements, indicating deep circulation.

•
Prepare a synthesis map at national level, integrated into a geographic information system that includes both the areas in which there is congruence between geology and geochemistry of the water, and specific areas or points where there are singularities.
This study has shown that in Spain there is a great variety of mineral waters with different compositions, and up to 78 groups or facies with different structures: 28 groups of bicarbonate water, Water 2020, 12, 2311 5 of 22 24 groups of chloride water, and 26 groups of sulfate water [27]. Its distribution, depending on the lithological, structural, and hydrogeological characteristics, allows for the definition of 19 hydromineral domains of different dimensions, geological origins, and hydrochemical characteristics (Figure 1). A hydromineral domain defines a set of geological formations related to each other geographically and stratigraphically, which include materials whose lithology and structure allow for the storage and circulation of groundwater with similar physicochemical characteristics [28].
Water 2020, 12, x FOR PEER REVIEW 5 of 22 This study has shown that in Spain there is a great variety of mineral waters with different compositions, and up to 78 groups or facies with different structures: 28 groups of bicarbonate water, 24 groups of chloride water, and 26 groups of sulfate water [27]. Its distribution, depending on the lithological, structural, and hydrogeological characteristics, allows for the definition of 19 hydromineral domains of different dimensions, geological origins, and hydrochemical characteristics (Figure 1). A hydromineral domain defines a set of geological formations related to each other geographically and stratigraphically, which include materials whose lithology and structure allow for the storage and circulation of groundwater with similar physicochemical characteristics [28].  [28].
A comparative study of natural mineral water in Spain, carried out through the composition of bottled water, relates this composition to the geographical location of the springs. It also highlights the latitude-salinity and length of mineralization [29].

Analysis of the Commercialization of Mineral Water in Spain
Regarding the commercialization of mineral water in Spain, the pioneering article "Drinking water in Spain" reveals very profitable river diversions, with no questions asked [21]. Here, types of bottled water are investigated, the evolution of their production at the end of the 20th century, the location of the springs, the business structure of the sector and, as a case study, the consumption of bottled water in the urban agglomeration of Murcia. Along this same line, the chapter "Drinking water in Spain-A strategic resource" [30] is explained. It highlights, in addition to the evolution of production at the dawn of the 21st century, the consequences of the process of permanent restructuring experienced by the sector. Another recent analysis of interest aims to recognize the different stages of the business history of bottled water and the configuration of the large business groups that dominate the current market [1].
Finally, the ANEABE (National Association of Bottled Water Companies) publications should also be used as a reference: "Annual Reports" [31], "White paper on bottled drinking water" [32], "Natural mineral water in childhood" [33], "Guide to good practices in eco-design and sustainability of mineral water" [34], and "Commitment to environmental sustainability and the natural circularity of the mineral water sector 2020" [35], among others. A comparative study of natural mineral water in Spain, carried out through the composition of bottled water, relates this composition to the geographical location of the springs. It also highlights the latitude-salinity and length of mineralization [29].

Analysis of the Commercialization of Mineral Water in Spain
Regarding the commercialization of mineral water in Spain, the pioneering article "Drinking water in Spain" reveals very profitable river diversions, with no questions asked [21]. Here, types of bottled water are investigated, the evolution of their production at the end of the 20th century, the location of the springs, the business structure of the sector and, as a case study, the consumption of bottled water in the urban agglomeration of Murcia. Along this same line, the chapter "Drinking water in Spain-A strategic resource" [30] is explained. It highlights, in addition to the evolution of production at the dawn of the 21st century, the consequences of the process of permanent restructuring experienced by the sector. Another recent analysis of interest aims to recognize the different stages of the business history of bottled water and the configuration of the large business groups that dominate the current market [1].
Finally, the ANEABE (National Association of Bottled Water Companies) publications should also be used as a reference: "Annual Reports" [31], "White paper on bottled drinking water" [32], "Natural mineral water in childhood" [33], "Guide to good practices in eco-design and sustainability of mineral water" [34], and "Commitment to environmental sustainability and the natural circularity of the mineral water sector 2020" [35], among others.

Objective and Interest of This Study
This article aims to analyze the evolution of the bottled natural mineral water sector for human consumption in Spain over the first two decades of the 21st century, despite the existence of other types of bottled waters (prepared water and bottled water for public consumption). Natural mineral water represents the vast amount of bottled water consumed in Spain (>97%), spring water constitutes a minimum part of mineral water commercialized in Spain (<2%), and prepared water represents a minimal part of the bottled water sector for consumption (<1%) [36]. In short, it is a matter of giving continuity to a line of research that began two decades ago [21].
The mineral water sector in Spain, as a whole, has had a notable progression in recent years. The quality and diversity of mineral waters, as seen in Section 1.2, which shows a large number of references to studies on the hydrogeological domains and the geochemical characteristics of the waters derived from those domains, has been a developmental factor. According to ANEABE, Spain ranks fourth in the EU in terms of mineral water production (behind Germany, Italy, and France), and third in consumption (after Italy and Germany). It is a dynamic sector, with an annual turnover of close to 1000 million Euros.
This study shows the current state of the sector in Spain, its legislative adaptation to the different community regulations (European directives), its recent evolution in terms of production and marketing of mineral waters, and some data and considerations about the environmental impact generated.
The text is structured as follows. The methodology follows this introduction and the data investigated are presented. The text continues with a section dedicated to the results and discussion (legislation and regulation of the exploitation of mineral water, production, and marketing of bottled mineral water). At the end (conclusions section), some final considerations are exposed.

Materials and Methods
The analysis of a subject as complex as the one dealt with in this study requires multidisciplinary consideration. From geography, in common practice, synthesis procedures are used, inherent to the opportune combination of different data sources and different territorial and temporal scales.
The research questions are summarized as follow. (i) What type of water is bottled in Spain? In this sense, legal documents and related regulations were reviewed (European Legislation: Directives, Spanish: Official State Gazette). (ii) How has the volume of packaging and number of companies evolved? The sources consulted to find out this evolution were, among others, the list of mineral waters recognized by member states (European Commission) and the data provided by the European Federation of Bottled Waters. Lastly, (iii) what is the business structure of the sector and which companies are the predominant ones? To answer this question, analysis was carried out, along with reference to other databases, and those provided by Alimarket, the main company that generates economic information in sectors such as food, packaging, mass consumption logistics, and restaurants and hotels. Likewise, for the analysis of specific cases, different news and press dossiers on private companies, such as Aguas Font Vella and Lanjarón S.A., were consulted.
According to Salkind [37], this research could be classified as nonexperimental or descriptive, since what is of interest is provide a broad image of the phenomenon while explaining and allowing the reader to understand the context in which the production and marketing of bottled mineral water has evolved in Spain. It should not be forgotten that understanding the descriptive nature of an event is as important as understanding the phenomenon itself; for this reason it is not possible to evaluate or appreciate the progress that has been made without understanding the context in which it occurs.

Legislation and Regulation of the Exploitation of Mineral Water and Preparation, Circulation, and Trade of Bottled Drinking Water: Brief Considerations
The extraction of mineral water in Spain is regulated by the Law 22/1973, of 21 July, on Mines (Published in the Official State Gazette «BOE» no. 176, from 07/24/1973 (https://www.boe.es/eli/es/ l/1973/07/21/22/con)). The Government grants the preferential right to the use of mineral water to whoever owns it at the time of the declaration of its mineral condition, who may exercise it directly in the manner and conditions that are determined in this title, or transfer it to third parties. To exercise the aforementioned rights, authorization must be requested from the Provincial Delegation of the Ministry of Industry, presenting the general project of exploitation, the budget of the investments to be made, and the economic study of its financing with the guarantees offered on its viability. The designation or justification of the protection perimeter considered necessary must also be presented, indicating the destination that will be given to the water. In the case of medicinal mineral water, the General Directorate of Health must be informed of the indication of using the water for the intended purposes.
The authorization or concession for the use of mineral water gives its holder the exclusive right to use it, as well as to prevent construction or activities from being carried out within the established perimeter of protection that may harm the normal use of the aforementioned. The prior authorization of the provincial delegation of the Ministry of Industry is necessary for the modification or enlargement of its use.
The holders of exploitation concessions have to notify the Provincial Delegation of the Ministry of Industry of any water extraction that they carry out as a consequence of the development of their construction, being able to use the groundwater obtained for mining purposes, unless they are considered by the administration as of better utility for other purposes.
If the planned tasks may affect the system of springs and water extraction in any way, the provincial delegation, after hearing the competent bodies, conditions the approval of the same to the fulfillment of special prescriptions that guarantee their conservation and will require, where appropriate, a bond that is legally applicable.
When water that feeds springs, sources, or pre-existing uses of any natural, duly legalized areas has been damaged, or aquifers are damaged, the concession holders will be obliged to replace the affected water in quantity and quality, and, in any case, pay the corresponding compensation for the damages caused, regardless of the criminal liability that they may have incurred.
Despite the time that has elapsed since the publication of the Mining Law in 1973, the text has not undergone major changes; rather it has been complemented by subsequent legislative developments, thanks to its generality and flexibility. Although it is an "old" text, according to [38], it regulates, in a certain way, a subject without interest at that time (early 1970s) in Spain-the environment. Unfortunately, in spite of this, there is no known mining-extractive activity that does not alter the environment in one way or another. Even so, the regulation of this legal text makes a serious effort to try to regulate the sector so that its activity, with the collection of water, damages aquifers as little as possible in their environment, while still respecting the most classic regulation of mining in Spain.
The harnessing of natural mineral waters in Spain has a double legal line: (i) as an extractive industry, its regulation begins through the Mining Law of 1973 (previously mentioned), and (ii) as a food industry; in 1981 the sanitary technical regulation that regulates its packaging and marketing was published. After Spain's accession to the European Community, the regulation was adapted to the contents of Council Directive 80/777/EEC, which aims to approximate the different regulations on natural mineral waters of member states. Regarding the environmental impact of the collection of natural mineral water for its packaging, its regulation is included in the Law 22/1973, of 21 July, on Mines. In its article seventy-four, it is indicated that when waters that feed pre-existing springs, births, or exploitation of any nature have been cut, duly legalized, or the aquifers are damaged, the concession holders will be obliged to replace the affected waters in quantity and quality, and, in any case, to pay the corresponding compensation for the damages caused, regardless of the criminal liability in which they could have incurred.
The factor of environmental responsibility in the performance of the mineral water packaging companies is increasing, and it focuses on several areas: containers and packaging, energy consumption, reduction of the carbon footprint, reduction of water consumption during the process of packaging, sustainable mobility in its commercial network, and in the accessibility of personnel to work.
In 2012, ANEABE signed a pioneering environmental commitment with the Ministry of Agriculture, Food and Environment, "Naturally 2015" (http://www.aneabe.com/sostenibilidad/compromiso-delsector/), in order to achieve objectives in that year above the requirements established in the national and European regulatory framework, which are management environmental impact of packaging, reducing energy consumption, reducing industrial water consumption, and protecting the environment. At the end of 2017, the aforementioned association joined the "Pact for a circular economy: the commitment of economic and social agents 2018-2020," promoted by the administration; and in 2018 it joined the "European Environmental Voluntary Commitment," promoted by the European Bottled Water Federation (EFBW).
In October 2018, ANEABE signed the "Commitment to Environmental Sustainability and Circularity of Mineral Waters, Naturally 2030" (http://www.aneabe.com/el-sector-de-las-aguas-minerales-presenta-sucompromiso-de-sostenibilidad-ambiental-y-economia-circular-2030-naturalmente/). The new agreement sets measurable environmental objectives, with dates 2020, 2025 and 2030. Through this agreement, the mineral water sector establishes, in addition to complying with environmental legislation, objectives in different areas of action, such as packaging and packaging, energy, carbon footprint, water, and sustainable mobility or the protection of biodiversity (Table 1).

Production of Bottled Mineral Water in Spain during the 21st Century
According to the IGME, the bottled mineral water sector in Spain reached its historical production figure in 2018, with a volume of more than 8200 million L, which represents an increase of 80% compared to 4555 million/L in 2002. According to ANEABE, the figure is lower, because it does not include all packaging companies, but it also reflects an increase in production of 63.5% (3860 million L packed in 2000 and 6300 million/L in 2018 (Figure 2)). The upturn in consumption that has occurred from 2014 is due to the economic recovery that the country is experiencing, the increase in the number of tourists, specific long periods of high temperatures, and the greater interest of consumers in healthy drinks.
Water 2020, 12, x FOR PEER REVIEW 9 of 22

Production of Bottled Mineral Water in Spain during the 21st Century
According to the IGME, the bottled mineral water sector in Spain reached its historical production figure in 2018, with a volume of more than 8200 million liters, which represents an increase of 80% compared to 4555 million/L in 2002. According to ANEABE, the figure is lower, because it does not include all packaging companies, but it also reflects an increase in production of 63.5% (3860 million liters packed in 2000 and 6300 million/L in 2018 (Figure 2)). The upturn in consumption that has occurred from 2014 is due to the economic recovery that the country is experiencing, the increase in the number of tourists, specific long periods of high temperatures, and the greater interest of consumers in healthy drinks. Regarding the differences in the data shown in Figure 2, the IGME statistic includes the total production of bottled water in Spain, that is, the production of all the industries dedicated to this sector; instead, the ANEABE statistic compiles the production of its associated companies. In 2018, eight companies with a production greater than 45 (Table 2). For the first two decades of this century, more than twenty bottled water plants have ceased activity (Table 3). Among the causes that justify these closures are the exhaustion of the water catchment sources, the alteration in its composition, the type of bottled water (spring) with fewer properties than natural mineral water, the reduced production capacity in a very competitive market, and the aging of the facilities due to lack of investments, despite the fact that in some cases their use began in the 19th century, after being declared public utility waters. These closures have been offset by the start-up and expansion of new industries, both in deposits and in packaging lines, and of others that were working well. Legal regulations also contributed to this positive global evolution, which allows a brand of water to have different origins Regarding the differences in the data shown in Figure 2, the IGME statistic includes the total production of bottled water in Spain, that is, the production of all the industries dedicated to this sector; instead, the ANEABE statistic compiles the production of its associated companies. In 2018, eight companies with a production greater than 45 million L were not in ANEABE and had a combined volume of 1075 million L: Vichy Catalán Corporation (435) (Table 2). For the first two decades of this century, more than twenty bottled water plants have ceased activity (Table 3). Among the causes that justify these closures are the exhaustion of the water catchment sources, the alteration in its composition, the type of bottled water (spring) with fewer properties than natural mineral water, the reduced production capacity in a very competitive market, and the aging of the facilities due to lack of investments, despite the fact that in some cases their use began in the 19th century, after being declared public utility waters. These closures have been offset by the start-up and expansion of new industries, both in deposits and in packaging lines, and of others that were working well. Legal regulations also contributed to this positive global evolution, which allows a brand of water to have different origins (an example is the case of Font Vella, whose brand comes from San Hilari Sacalm (Girona) and Sigüenza (Guadalajara)). No data * The type of water that these companies bottled is specified, since natural mineral water is different from spring water, and that precisely the different quality of the latter has contributed to the fact that, in many cases, the business has decreased (even closing some companies), due to inability to compete with natural mineral water.
In 2019, Spain had 165 packaging plants, unevenly distributed throughout its territory (Figure 3) However, these data should be read with caution, since the most important issue is not the number of bottling plants, but their relevance, which is given by the characteristics of the water of each spring or exploitation, the prestige of the brand with which it is marketed, and the distribution capacity by the company that owns the catchments and bottling plants.
in many cases, the business has decreased (even closing some companies), due to inability to compete with natural mineral water.
In 2019, Spain had 165 packaging plants, unevenly distributed throughout its territory ( Figure  3). Most of the plants were concentrated in a small number of provinces which are recognized by the European Union. Firstly, the province of Girona (Catalonia) stands out, which accounts for 22; 15 of them located in the region of La Selva. Granada (Andalusia) follows in volume with ten, of which eight are in the municipalities of Sierra Nevada. In third place are the provinces of Valencia (Valencian Community) and León (Castille and León), which register nine each. Fewer packaging plants are located in the provinces of Castellón (Valencian Community), Las Palmas (Canary Islands), and Mallorca (Balearic Islands), which have seven in each case. Huesca (Aragon), Jaén (Andalusia), Ourense (Galicia), and Toledo (Castille-La Mancha) contribute six each. There are five plants in Lugo and Pontevedra (Galicia), and in Asturias. Four are located in Lleida (Catalonia), Cuenca (Castille-La Mancha), Teruel and Saragossa (Aragón), and the Region of Murcia. Other provinces do not reach this figure, and the provinces of Vizcaya and Álava (Basque Country), Ávila (Castille and León), Cádiz, Seville and Huelva (Andalusia), and Alicante (Valencian Community) do not have any facilities. However, these data should be read with caution, since the most important issue is not the number of bottling plants, but their relevance, which is given by the characteristics of the water of each spring or exploitation, the prestige of the brand with which it is marketed, and the distribution capacity by the company that owns the catchments and bottling plants. The bottled water sector in Spain generates more than 4000 direct jobs. Figure 4 shows that men outnumber women. There was a slight increase in female employment in the last year analyzed (2018). It is interesting that women find work in this sector, since it is about female employment in The bottled water sector in Spain generates more than 4000 direct jobs. Figure 4 shows that men outnumber women. There was a slight increase in female employment in the last year analyzed (2018). It is interesting that women find work in this sector, since it is about female employment in rural areas (where these natural mineral water packaging plants are usually located). This fact could mean that women settle in a rural environment, going against the traditional processes of emigration (to cities), and that new families and increased birth rates are generated, which is necessary in these areas [40]. The number of indirect and induced workers exceeds 25,000. In the European Union, it generates 54,000 direct and 833,000 indirect and induced jobs [31]. rural areas (where these natural mineral water packaging plants are usually located). This fact could mean that women settle in a rural environment, going against the traditional processes of emigration (to cities), and that new families and increased birth rates are generated, which is necessary in these areas [40]. The number of indirect and induced workers exceeds 25,000. In the European Union, it generates 54,000 direct and 833,000 indirect and induced jobs [31].  (Table 4 and Table A2). The Spanish bottled water market is characterized by the predominance of natural and spring mineral water over prepared drinking water, and still water (96.3%) over carbonated water (3.7%); this phenomenon puts Spain last as opposed to countries like Germany, Italy, Poland, or France. Consumption of bottled water in Spain amounted to 80 L/inhabitant/year in 1998, and presents an evolution that approximates it to more than 100 L/inhabitant/year in countries such as Italy, Belgium, Germany, or France [41]. Two decades later, in 2018, consumption in Spain amounted to 134 L/inhabitant/year, which is why it has increased by 67.5%, and puts Spain in sixth place in the European Union, with a figure similar to countries like Hungary, France, Belgium, Portugal, and Greece.   (Tables 4 and A2). The Spanish bottled water market is characterized by the predominance of natural and spring mineral water over prepared drinking water, and still water (96.3%) over carbonated water (3.7%); this phenomenon puts Spain last as opposed to countries like Germany, Italy, Poland, or France. Consumption of bottled water in Spain amounted to 80 L/inhabitant/year in 1998, and presents an evolution that approximates it to more than 100 L/inhabitant/year in countries such as Italy, Belgium, Germany, or France [41]. Two decades later, in 2018, consumption in Spain amounted to 134 L/inhabitant/year, which is why it has increased by 67.5%, and puts Spain in sixth place in the European Union, with a figure similar to countries like Hungary, France, Belgium, Portugal, and Greece.

Marketing of Bottled Mineral Water in Spain
At the end of the last century, the prosperous bottled water business in Spain attracted the multinationals Danone, Nestlé, Coca-Cola, and San Benedetto, which quickly reached leading positions in the Spanish market. Their entry triggered the business operations of buying and selling springs and the creation of new plants [1]. In the year 2000, 115 companies were engaged in water packaging, and of these, 85 had a production that exceeded 2 million L. Together they accounted for 97% of total production. It is a highly atomized sector, since only eight companies exceeded 100 million L. Among the first five were Font Vella (560 million L), Grupo Vichy Catalán (381 million L), Aguas de Lanjarón (240 million L), Aguas Minerales Pascual (246 million L), and Agua Mineral San Benedetto (238 million L). Multinationals predominated in this small group: the French BSN, owner of Font Vella and Lanjarón, and the Italian San Benedetto [21].
In 2018, at European level, the bottled water sector had invoiced 12.4 billion Euros. The volume of bottled water amounted to 60,826.5 million L. As in Spain, in Europe the sector is highly atomized, and made up of 600 companies, 84% of them are small and medium-sized companies [31]. In that same year, Spain reduced its number of companies by almost half. More than 60 are accounted for, but only 45 of them packaged more than 10 million L, and add up to a production of 7802 million L, which represents 91.5% of total bottled water, with a global turnover that amounts to 1283.6 million Euros (equivalent to 10.4% of the whole of the European Union). In two decades there have been important changes in the business structure of the sector. As shown in Table 5, around twenty companies have ceased their activity for different reasons, but new ones have emerged, and above all there has been a process of business concentration in order to be more competitive in the commercialization of their production (Table A3).
There are seven companies that each pack more than 400 million L, and add a volume that exceeds half of the total bottled by the 45 main companies. These are Aguas Danone (11.3%), Agua Mineral San Benedetto (11.1%), Grupo Bebidas Naturales (8.6%), Calidad Pascual (7.2%), Grupo Nestlé (6.5%), Premium Mix Group (5.6%), and Grupo Mahou-San Miguel (5.4%). Two are beer companies, the latter highlighting the relationship between both industries for the marketing of their products for many years [42]. As a whole, the seven companies account for 15.5% of the industries, but package 55.7% of the production. As can be seen, the role of multinationals continues to predominate among the top five companies in the sector.
The packaging and marketing of water is a complex activity. The characteristics of natural mineral water, the prestige of the brand and the strategies of its advertising and commercialization are three fundamental elements in its success, all of which are reflected in the value of its production. This explains why their position is different regarding the volume of their sales, except in the case of Aguas Danone, which also occupies first place, with a contribution of 18.3% of the total of the group of 45 main companies. It is followed by Calidad Pascual (10.8%), Premium Mix Group (9.6%), Agua Mineral San Benedetto (8.7%), Grupo Mahou-San Miguel (8%), Grupo Nestlé (7.0%), and Natural Beverages Group (4.4%). Of the seven, they add two-thirds of the total turnover. Two companies, the multinational Aguas Danone and the Spanish Calidad Pascual, occupy the top positions in terms of turnover. Aguas Danone has packaging plants in Sant Hilari Sacalm (Girona), Sigüenza (Guadalajara), and Lanjarón (Granada). Calidad Pascual owns the Ortigosa del Monte and Tres Casas plants, both in the province of Segovia.
The Nature Reserve of Les Guilleríes (Girona), located in the extreme northeast of the Catalan Precoastal Range, is unique in terms of the abundance and quality of its waters [43]. The waters emerge to the surface through springs with different types of mineralization, which means that in a small area there are several water packaging plants, well known for decades. This is the case of San Hilari Salcalm, municipality of Catalonia, where the most mineral water is packaged and where the Font Vella plant is located [44]. Sant Hilari Sacalm, which began in the late 1970s, measured extraordinary growth in the mineral water sector; currently, however, the plant exhibits a clear stagnation and a tendency for the loss of industrial jobs [45]. Sant Hilari Sacalm encompasses 100 springs, but Les Guilleries has many more of equal or better quality, distributed throughout the municipalities of the La Selva Region [43], which is an engine of the economy [46]. Table 5 shows the natural mineral water packaging plants located in the La Selva region, which serves as a national and international benchmark. In July 2002, Font Vella S.A. opened a new plant of its subsidiary Aguas de Fontemilla in Sigüenza (Guadalajara) to package the brand "Manantial de Siguenza-Font Vella," after an investment of 10 million Euros. It has a packaging capacity of 250 million L per year. This is possible due to the change in the regulations that allows the same brand of water to be sold from different sources, provided the origin is indicated and its purpose is to supply its customers in western Spain [47]. Located in the Barranco del Río Dulce Natural Park, this catchment is one of the most widely used by Castilla-La Mancha [48].
In the Sierra Nevada National Park, most of the waters flow superficially or sub-superficially, giving rise to brooks, streams, and rivers, coming either directly or indirectly from melted snow and rain. Due to its origin, the water is cold, weakly saline, somewhat acidic, and, in short, of excellent physical, chemical, and microbiological quality [49]. In the surroundings of Lanjarón there are a large number of springs. Most of the springs are located in the vicinity of the town, and particularly on its eastern and western edges, which coincide with the channels of the river courses that delimit the Bordila hill, with the Lanjarón river to the east and the Salado stream to the west [50]. In Lanjarón Spa, drinking water for rheumatic and digestive treatment has been an ongoing practice for centuries. In 2002, it accounted for 29% of all hotel beds in Andalusian spas, making it of high touristic relevance [51].
The main historic milestones of the legendary Aguas Font Vella and Aguas de Lanjarón brands are compiled in Table 6.
In the northwest of the Sierra de Guadarrama, Calidad Pascual packages its only brand (Bezoya) in the springs of the province of Segovia, located in the areas of Ortigosa del Monte and Tres Casas, the former occurring through catchments located on the right bank of the Beceda stream, between 1550 and 1650 m of altitude. The springs correspond to areas of natural discharge from the subsurface runoff of rainwater and the snowmelt accumulated on the summits during winter. In the case of Tres Casas, natural discharge occurs through springs whose recharge exhibits the same behavior as in Ortigosa del Monte [52].

Conclusions
The geological and climatic diversity that characterizes Spain, both insular and peninsular, contributes to the variety of hydrogeological domains and to the availability of abundant and varied mineral waters. The studies carried out by the Geological and Mining Institute of Spain and other interested organizations and professionals give a good account of this. The Montseny (Girona), Sierra Nevada (Granada), and Sierra de Guadarrama (Segovia) National Parks are three areas of reference in the location of water bottling plants. These are three mountainous areas in Spain's wet region that receive most of the precipitation in the form of snow, which allows a slow filtration of the water that is subsequently collected through different types of catchment.
Bottled drinking water is one of the most regulated food products subject to greater demands by legislation, from both the European Commission and the Government of Spain, and the governments of the different autonomous communities. Mineral-medicinal waters began to be consumed in the mid-19th century in spas. Its consumption expanded and became widespread at the end of the 20th century, thanks to the development of plastic packaging and logistics for its transport and distribution. Spain ranks fourth in the European Union in terms of the volume of bottled water and the number of plants dedicated to this activity. Its production has increased over the last two decades, and the fact that Spain is a very touristic country has contributed to this.
The business structure of the sector is characterized by the presence of abundant companies with industries throughout the territory. Its atomization stands out-only seven companies out of the forty-five that bottle more than ten million liters a year account for more than half of the total bottled water. Of these, three are the multinationals Danone, San Benedetto, and Nestlé, companies that came to Spain at the end of the last century aware that they were entering an expanding market. A fact that distinguishes the market for bottled water in Spain is the difference in price between brands, as is logical, and a fact that is reflected in the turnover of companies that work in this sector.
Seven companies concentrate in Spain more than half of their production of mineral water. These companies have abundant resources for the permanent modernization of their packaging plants, and they have a wide commercialization network that allows them to transport their waters to numerous territories, despite the distances. This situation may lead to the idea that at some point of product shortage, or for strategic reasons, these companies could adopt measures that would have a considerable impact on the price of water, and that mineral water would become an inaccessible resource for a significant part of the population. However, the situation over the last few decades shows that this has never happened, not even in moments as complicated as the current ones (global health crisis caused by . Also noteworthy is the solidarity component of these companies. In January 2016, for example, the Spanish Red Cross and ANEABE announced the creation of the Banco de Agua Solidario (ANEABE: the first solidarity water bank is born: http://www.aneabe.com/nace-el-primer-banco-de-agua-solidariode-espana/) (water solidarity bank) in Spain. Its first intervention occurred in December 2016, after the floods in Los Alcázares (Region of Murcia) (ANEABE and Red Cross supply water to populations affected by floods, 2016: http://www.aneabe.com/aneabe-y-cruz-roja-envian-agua-envasada-a-murciatras-las-inundaciones/), supplying water to one thousand people for three days. Recently, in April 2020, this solidarity bank donated more than a million liters of water after the difficulties caused by Covid-19, to cover the basic needs of the most vulnerable population (Donations of bottled mineral waters during the health crisis caused by COVID-19: http://www.aneabe.com/mas-de-un-millon-de-litros-de-aguamineral-donados-por-el-sector-de-las-aguas-minerales-en-espana-ante-el-covid-19/).
Environmentally, these companies generate negative impacts. Among others, the manufacturing of its bottles generates an excess of waste. Likewise, the use of pallets generates a negative impact, and transport generates large amounts of CO 2 . Furthermore, the energy expenditure is high in the production of bottles or the treatment of plastic waste once used. The Progrifo Manifiest (Progrifo Manifiest. https://www.progrifo.org/) has recently emerged, which is an initiative that aims to increase the role of tap water among the population through various lines of work. The aim is to avoid cross-contamination by not having to use packaging for transport, as well as by having a low ecological footprint, as it does not generate solid urban waste and does not use fossil fuels for its distribution. In this sense, a great example to follow is the action of the Paris Water Company (municipal), promoting the good quality and consumption of its drinking water with the brand "Eau de Paris." Regarding the environment, some companies are taking steps to reduce these negative effects. One which stands out among others is the "Commitment to Environmental Sustainability and Circularity of Mineral Waters, 2030 Naturally" (Mineral Waters-Environmental Sustainability and Circular Economy Commitment "2030 Naturalmente": http://www.aneabe.com/el-sector-de-las-aguas-mineralespresenta-su-compromiso-de-sostenibilidad-ambiental-y-economia-circular-2030-naturalmente/). Through this agreement, the mineral water sector establishes measurable objectives in different areas of action: packaging, energy, carbon footprint, water, sustainable mobility, or protection of biodiversity.  Acknowledgments: Authors want to thank anonymous reviewers for their suggestions, which have helped to significantly improve the manuscript.

Conflicts of Interest:
The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, or in the decision to publish the results.