#community-water-harvesting
Issues, solutions, and case studies for community-water-harvesting
Found 9 nodes with this tag: 0 issues · 3 solutions · 6 case studies
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Solutions 3
#00200Subsidized household rainwater harvesting for water-poor neighborhoods
City-subsidized roof-harvesting kits (first-flush separator, cistern, filters) designed for informal housing and installed with NGO and local-installer training, supplying 5-8 months per year of non-potable and filtered water in suitable climates.
#00195National household-cistern program delivered by community networks
A standardized 16,000 litre roof-catchment cistern per family, built by locally trained masons with family labor and delivered through a civil-society network with federal funding. Covers drinking and cooking water through an 8-month dry season.
#00193Revive traditional rainwater-harvesting and recharge structures through village labor and ownership
Villages build and own earthen johads, contour trenches, sand dams, infiltration canals and ponds with NGO facilitation. Cheap per structure and compounding at catchment scale, but success hinges on hydrogeological siting, maintenance institutions and demand rules.
Case studies 6
Mexico City, Mexico
SuccessSEDEMA (Mexico City environment ministry) with Isla Urbana and local installers · since 2019 · City
The Cosecha de Lluvia program, run by SEDEMA (Mexico City's environment ministry), scaled the citizen-designed Isla Urbana kit (Tlaloque first-flush separator, cistern, and filters) with public subsidy: approximately 62…
$70M · Mexico City government subsidy, ~US$70M over 2019-2023 · 1 source
Semiarido, Northeast Brazil
SuccessASA (Articulacao Semiarido Brasileiro), a network of approximately 3,000 civil-society organizations · since 2003 · Region
The Programa Um Milhao de Cisternas (P1MC) has been building standardized 16,000 litre roof-catchment cisterns for families across the Brazilian Semiarido since 2003, delivered by the ASA network of about 3,000 civil-so…
Brazilian federal funding channeled through the ASA civil-society network; current cost approx. R$5,000 to 6,000 per cistern · 3 sources
Kitui County, Kenya
FailedNGOs and donors with local communities (96 percent of dams donor-funded) · since 1995 · Region
Kitui County hosts over 1,000 sand dams built since the 1990s across seasonal riverbeds — the world's densest concentration — making it the best-documented test case for sand dam performance at scale. Independent survey…
Overwhelmingly donor grants (96 percent donor-funded) · 2 sources
Campesino communities with Aquafondo, The Nature Conservancy and CONDESAN · since 2015 · Region
Amunas are pre-Inca infiltration canals in the Peruvian highlands that divert wet-season streamflow onto permeable slopes, where water infiltrates and resurfaces downslope months later, extending dry-season availability…
MERESE mechanism: approximately 1 percent of Lima water tariffs earmarked for upstream ecosystem services · 1 source
Maharashtra, India
PartialPaani Foundation (Satyamev Jayate Water Cup) with participating villages · 2016–2019 · Region
From 2016 to 2019 the Paani Foundation ran the Satyamev Jayate Water Cup: 45-day competitions in which villages raced to build watershed structures (contour trenches, bunds, ponds) through shramdaan (voluntary labor). P…
Paani Foundation with village voluntary labor (shramdaan); parallel state program Jalyukt Shivar spent approx. Rs 9,634 crore of public funds
Tarun Bharat Sangh (TBS) with village communities; led by Rajendra Singh · since 1985 · Region
Since 1985, Tarun Bharat Sangh facilitated village-built earthen recharge ponds (johads) across Alwar district, Rajasthan. The model requires 25–33% village labor/cash contribution per structure to anchor ownership. Typ…
NGO and donor funds with 25 to 33 percent village contribution per johad · 1 source