Keywordsdomestic consumption; harvesting; Central Mexico; rainwater; roof area; rainwater harvesting system; stormwater runoff management model; backpropagation neural network; tabu search; spatial design of capacity and quantity; optimization; urban flood mitigation; economic feasibility; energy saving; geographic information system GIS; rainwater harvesting; water resources conservation; rainwater harvesting; sustainable water management; decisive factors; rough set analysis; rainwater harvesting; flushing water demand; water balance simulation; reliability analysis; configurations; decision support; multi criteria analysis; product innovation; rainwater harvesting; sustainable drainage systems; source control; rainwater; Mexico; catchment; domestic supply; water demand; marginalized communities; design; RWH suitability; AHP approach; GIS; Tunisia; jessour; tabias; Mombasa; roof rainwater harvesting; water supply; water demand; integrated water resources management; WEAP; rainwater harvesting; water quality; water conservation; rainwater tanks; life cycle cost analysis; multi criteria analysis; urban flooding