Company lists · Data refreshed November 2026

Top 25 Clean water nonprofits worldwide

RevenueBase identified 1,398 company matches for clean water nonprofits worldwide as of November 2026 and tracks 17,739 professional contacts across them, including 4,752 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for clean water nonprofits worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for clean water nonprofits follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,398Companies
17,739Contacts tracked
4,752Verified emails
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The 25 largest clean water nonprofits worldwide

Ranked by team size
Top 25 of 1,398 company matches for clean water nonprofits worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,0001,278 contacts →

Exact match

“WaterAid is an international charity with one goal: to change the world through water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 202651-200546 contacts →

Exact match

“Water For People promotes the development of high-quality drinking water and sanitation services accessible to all – sustained by strong communities, businesses, and governments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200387 contacts →

Exact match

“Since our founding during the campaign to pass the landmark Clean Water Act in 1972, Clean Water Action has worked to win strong health and environmental protections by bringing…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 202651-200380 contacts →

Exact match

“At Culligan Water Conditioning of Jacksonville FL, we not only aim to provide better water to the community, we are also committed to building a better, more sustainable world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchStafford, TX, United StatesHQ recorded Nov 6, 2026201-500349 contacts →

Exact match

“Living Water International exists to demonstrate the love of God by helping communities acquire desperately needed clean water, and to experience "living water"-the gospel of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchDenver, DC, United StatesHQ recorded Nov 6, 202651-200343 contacts →

Exact match

“Established in 1881, the American Water Works Association is the largest nonprofit, scientific and educational association dedicated to managing and treating water, the world’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFranklin, TN, United StatesHQ recorded Nov 6, 202651-200326 contacts →

Exact match

“charity: water is a non-profit bringing clean and safe drinking water to people around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchIslamabad, United StatesHQ recorded Nov 6, 2026201-500287 contacts →

Exact match

“Shifa Foundation (SF) is a non-profit organization established in 1991.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-200218 contacts →

Exact match

“Impact Water provides safe drinking water solutions to over partner schools, supporting 24 million students daily.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 2026501-1,000209 contacts →

Exact match

“WaterHealth International (WHI) is a global leader in providing access to safe, WHO-quality affordable drinking water to underserved communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchThe Hague, NetherlandsHQ recorded Nov 6, 2026n/a186 contacts →

Exact match

“Join us to build a world in which all people live in a clean environment with access to appropriate and sustainable sanitation and waste services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew Delhi, IndiaHQ recorded Nov 6, 2026201-500184 contacts →

Exact match

“Water, Sanitation and Hygiene Institute (WASH Institute) is a registered NGO established in 2008 in Kodaikanal, Tamil Nadu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-200154 contacts →

Exact match

“American Rivers protects wild rivers, restores damaged rivers, and conserves clean water for people and nature.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchUtrecht, NetherlandsHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“VEI - Dutch Water Operators Providing universal access to potable water positively boosts the economic and social development of a region.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBentonville, AR, United StatesHQ recorded Nov 6, 2026201-500110 contacts →

Exact match

“Transforming lives and sharing God's love through sustainable access to safe water, sanitation, and hygiene in the places that need it most.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHamburg, GermanyHQ recorded Nov 6, 202611-50109 contacts →

Exact match

“Viva con Agua de Sankt Pauli is an organisation committed to ensuring that all people worldwide have access to clean drinking water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLisbon, PortugalHQ recorded Nov 6, 20261,001-5,000106 contacts →

Exact match

“At Saur, we mobilize ourselves daily to protect and preserve water across all territories.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Our Mission: CDD India is a not-for-profit organization, registered in 2005, that innovates, demonstrates and disseminates decentralized nature-based solutions for the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-20098 contacts →

Exact match

“Safe Water Network is a dynamic non-profit organization committed to delivering innovative and sustainable solutions for safe water access in underserved communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDenver, VA, United StatesHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“The Water Research Foundation (WRF) is the leading research organization advancing the science of all water to meet the evolving needs of its subscribers and the water sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMumbai, IndiaHQ recorded Nov 6, 2026201-50087 contacts →

Exact match

“Paani Foundation was set up in 2016 by the core team of the ‘Satyamev Jayate’ TV show, with the mission of making rural Maharashtra drought-free and prosperous.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBoone, NC, United StatesHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“Wine To Water is a global nonprofit committed to loving and serving through the power of clean water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCalgary, AB, CanadaHQ recorded Nov 6, 202611-5082 contacts →

Exact match

“CAWST is a Canadian charity and licensed engineering firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Amazi Water is the primary, in-country partner for clean water projects in Burundi.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHyderabad, IndiaHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Naandi Water is a new generation community social enterprise with a mission to save lives by providing safe drinking water to the underserved in a sustainable way.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,398 clean water nonprofits worldwide

See the full list, filter by size, metro and specialty, and access 4,752 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean water nonprofits worldwide at a glance

As of Nov 6, 2026
26.8%Verified-email coverage
12.7Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
829
11-50
405
51-200
107
201-500
36
501-1,000
8
1,001-5,000
4
5,001-10,000
2

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for clean water nonprofits are linked below.
What qualifies
Company records worldwide whose business descriptions match “clean water nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 4,752 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Clean water nonprofits by location

5 lists · largest first

Every Clean water nonprofits list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “clean water nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clean water nonprofits are there worldwide?

RevenueBase identified 1,398 company matches for clean water nonprofits worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Wateraid tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most clean water nonprofits?

The United States leads with 462 companies, followed by India (74) and Canada (52). Every clean water nonprofits list by country and city is linked on this page.

Which city has the most clean water nonprofits?

London leads with 19 company records, followed by Washington (19) and Los Angeles (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,752 professional contacts with verified work emails tracked across these 1,398 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.