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Article

Effects of Climate Change on Water Quality in the Jucar River Basin (Spain)

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Global Omnium-Aguas de Valencia S.A., Gran Vía Marqués del Túria, 19, 46005 València, Spain
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IIAMA—Instituto de Ingeniería del Agua y Medio Ambiente, Universitat Politècnica de València, Camino de Vera s/n, 46022 València, Spain
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Climate Research Foundation, C/Gran Vía 22, 7° dcha, 28040 Madrid, Spain
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Empresa Mixta Valenciana de Aguas, S.A., (EMIVASA) Reino de Valencia n° 28, 46005 València, Spain
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Department of Algebra, Geometry and Topology, Complutense University of Madrid, Plaza de Ciencias 3, Ciudad Universitaria, 28040 Madrid, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Bommanna Krishnappan
Water 2021, 13(17), 2424; https://doi.org/10.3390/w13172424
Received: 26 July 2021 / Revised: 28 August 2021 / Accepted: 30 August 2021 / Published: 3 September 2021
(This article belongs to the Section Water Quality and Contamination)
The Mediterranean region is a climate change hotspot, especially concerning issues of hydrological planning and urban water supply systems. In this context, the Jucar River Basin (Spain) presents an increase of frequency, intensity and duration of extreme meteorological phenomena, such as torrential rains, droughts or heat waves, which directly affect the quantity and quality of raw water available for drinking. This paper aims to analyze the effects of climate change on the raw water quality of the Jucar River Basin District, which mainly supplies the city of Valencia and its metropolitan area, in order to adapt drinking water treatments to new conditions and opportunities. For this purpose, we used observed data of water quality parameters from four stations and climate drivers from seven Earth system models of the latest Coupled Model Intercomparison Project—Phase 6. To model water quality (turbidity and conductivity) in the past and future scenarios, this study employs a backward stepwise regression taking into account daily values of mean temperature, maximum temperature, total rainfall and minimum and maximum relative humidity. Results showed that the model performance of the water quality simulation is more adequate for short moving-average windows (about 2–7 days) for turbidity and longer windows (about 30–60 days) for conductivity. Concerning the future scenarios, the most significant change was found in the projected increase of conductivity for the station of the Júcar river, between 4 and 11% by 2100, respectively, under the medium (SSP2–4.5) and pessimistic (SSP5–8.5) emission scenarios. The joint use of these types of management and monitoring tools may help the managers in charge of carrying out the different water treatments needed to apply a better plan to raw water and may help them identify future threats and investment needs to adapt the urban water supply systems to the changing conditions of raw water, such as turbidity or conductivity, as a consequence of climate change. View Full-Text
Keywords: urban water supply; climate change; resilience; water treatment; water quality urban water supply; climate change; resilience; water treatment; water quality
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MDPI and ACS Style

Gómez-Martínez, G.; Galiano, L.; Rubio, T.; Prado-López, C.; Redolat, D.; Paradinas Blázquez, C.; Gaitán, E.; Pedro-Monzonís, M.; Ferriz-Sánchez, S.; Añó Soto, M.; Monjo, R.; Pérez-Martín, M.Á.; Almenar Llorens, P.; Macián Cervera, J. Effects of Climate Change on Water Quality in the Jucar River Basin (Spain). Water 2021, 13, 2424. https://doi.org/10.3390/w13172424

AMA Style

Gómez-Martínez G, Galiano L, Rubio T, Prado-López C, Redolat D, Paradinas Blázquez C, Gaitán E, Pedro-Monzonís M, Ferriz-Sánchez S, Añó Soto M, Monjo R, Pérez-Martín MÁ, Almenar Llorens P, Macián Cervera J. Effects of Climate Change on Water Quality in the Jucar River Basin (Spain). Water. 2021; 13(17):2424. https://doi.org/10.3390/w13172424

Chicago/Turabian Style

Gómez-Martínez, Gabriel, Lorena Galiano, Toni Rubio, Carlos Prado-López, Darío Redolat, César Paradinas Blázquez, Emma Gaitán, María Pedro-Monzonís, Sergio Ferriz-Sánchez, Miguel Añó Soto, Robert Monjo, Miguel Á. Pérez-Martín, Pura Almenar Llorens, and Javier Macián Cervera. 2021. "Effects of Climate Change on Water Quality in the Jucar River Basin (Spain)" Water 13, no. 17: 2424. https://doi.org/10.3390/w13172424

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