Water

WaterAid

Research summary, last reviewed May 2026. UK charity 288701 (England and Wales) and SC039479 (Scotland). Official site.

Independent recognition: Charity Navigator 4/4 stars, five consecutive years (US arm) · Candid Platinum Seal of Transparency (US arm)

Headline outcome: 30 million people reached with clean water since 1981

What does WaterAid do?

WaterAid works on water, sanitation and hygiene (WASH), the foundation layer of public health. In the year to March 2025 its UK-managed programmes reached 441,387 people with clean water and 118,051 with decent sanitation in households and communities, supported 405 schools, 385 healthcare facilities and 1,741 communities, and installed 515 water points. Cumulatively since 1981, the wider WaterAid federation has reached 30 million people with clean water, 29.6 million with decent toilets and 31.7 million with good hygiene.

Unusually, WaterAid was founded not by an individual but by an industry: the UK water sector created it in July 1981, with a starting budget of £25,000, as its response to the UN’s water and sanitation decade. King Charles III has been its royal patron continuously since 1991. Its distinguishing approach is systems-strengthening: rather than simply installing wells, it works with governments, utilities, local mechanics and community committees so that services keep running, and campaigns for bigger national WASH budgets (Burkina Faso’s sanitation budget rose over 30% and Malawi’s WASH budget 54% in the most recent year, after WaterAid-supported advocacy).

Why did EveryDrop choose it?

WaterAid passed our four-stage vetting assessment: a clearly aligned charitable purpose (advancement of health and relief of poverty), no evidence of undue private benefit, no evidence of public disbenefit, and no undue restrictions on access. Services are free at the point of installation and selection is needs-based, with explicit inclusion work on gender and disability. It is registered with both the Charity Commission and Scotland’s OSCR, its trustees are unpaid (several are significant personal donors), and its 2024-25 accounts received an unqualified audit from PwC. Its US arm has held the maximum 4/4-star Charity Navigator rating for five consecutive years and Candid’s Platinum Seal of Transparency.

How effective is it?

The intervention class is among the best-evidenced in global health. A 2022 systematic review and meta-analysis in The Lancet found that sanitation interventions reduce diarrhoeal disease in children in low- and middle-income countries by around 36%, handwashing with soap by around 47%, and water quality interventions by around 19%. A 2023 PLOS Medicine review found WASH interventions associated with a 17% reduction in all-cause child mortality. WaterAid deliberately does not publish a single “£X buys one toilet” figure, because its model funds whole local systems rather than individual installations; it reports that 72p of every £1 spent goes on delivering services and making change.

What are the open questions?

We publish what we are monitoring as well as what we like. The biggest is a sector-wide one: a substantial share of water points installed across sub-Saharan Africa, commonly estimated at 30 to 60%, are non-functional at any given time. This is precisely why we avoid “a well for life” claims. WaterAid is one of the more thoughtful organisations on this problem, training local mechanics, building maintenance committees and monitoring functionality; in one Ethiopian district it found 26.9% of water schemes broken and built the data and budget systems to fix them. Second, WaterAid is not a GiveWell or Founders Pledge recommendation; we read this as a category effect rather than a criticism, since those evaluators favour interventions with cleaner per-dollar trial evidence, and no critical findings have been published. Third, WaterAid self-discloses safeguarding cases transparently: 61 reports in 2024-25, seven full investigations, four dismissals, and one case reported to the Charity Commission, which agreed with WaterAid’s handling. Finally, the January 2025 US foreign-aid freeze affected seven countries where WaterAid works, with around £3 million of income at risk; we watch how replacement funding develops.

Sources

This summary is derived from EveryDrop's internal vetting dossier, prepared under our four-stage assessment framework using public, verifiable sources. Assessments are re-checked every twelve months. If you spot something we should know, email [email protected].