Company lists · Data refreshed September 2026
Top 25 Water conservation nonprofits worldwide
RevenueBase identified 492 water conservation nonprofits worldwide as of September 2026 and tracks 4,088 professional contacts across them, including 1,080 with verified work emails. The United States is the largest market and Bangalore the largest hub.
This list covers water conservation nonprofits worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026. Country and city lists for water conservation nonprofits follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest water conservation nonprofits worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 366 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 230 contacts → | ||||
Indirect evidence “Now part of Resource Innovations, RHA will expand its team to over 1,100 professionals, broadening expertise and offering clients additional solutions in energy storage and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 105 contacts → | ||||
Partial evidence “Viva con Agua de Sankt Pauli is an organisation committed to ensuring that all people worldwide have access to clean drinking water.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 101 contacts → | ||||
Partial evidence “At Saur, we mobilize ourselves daily to protect and preserve water across all territories.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 81 contacts → | ||||
Indirect evidence “River Partners brings life back to rivers.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 70 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 62 contacts → | ||||
Partial evidence “We are Resource Central: determined to make conservation so simple that you don’t even realize you’re doing it.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 59 contacts → | ||||
Partial evidence “At Saur, we mobilize ourselves daily to protect and preserve water across all territories.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 58 contacts → | ||||
Partial evidence “The Freshwater Trust is focused on using insight to solve problems at the intersection of water and the economy.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 53 contacts → | ||||
Partial evidence “We are committed to solving water scarcity and water quality challenges within our lifetime… through innovation in business strategy, technology, partnerships, business models and…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Strong evidence “Aqualogic is an integrated water conservation and demand management business, helping water companies reduce waste, improve performance and strengthen long-term resilience through…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 43 contacts → | ||||
Partial evidence “People have always gathered around water to build.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 41 contacts → | ||||
Partial evidence “Empowering the youth to advocate for sustainable access to clean water for all through service and education.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 38 contacts → | ||||
Indirect evidence “AquaAction is a registered charity and and non-profit organization in Canada and the United States, focused on restoring, protecting and conserving freshwater.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 37 contacts → | ||||
Partial evidence “Water resources are under pressure worldwide.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 36 contacts → | ||||
Partial evidence “Great River Greening inspires, engages and leads local communities in conserving and caring for the land and water that enrich our lives.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 35 contacts → | ||||
Indirect evidence “CWEA is the trusted organization that advocates for and empowers wastewater professionals so they can protect and harness the potential of California’s most critical resource…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 35 contacts → | ||||
Indirect evidence “Our Mission: Protect and restore critical natural areas and waterways and educate the community to create a legacy of a healthy, sustainable environment for future generations.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 34 contacts → | ||||
Partial evidence “Buffalo Niagara WATERKEEPER’s mission is to protect and restore our water and surrounding ecosystems for the benefit of current and future generations.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 34 contacts → | ||||
Partial evidence “The things people value most in life - family and friendship, culture, freedom, and opportunity - all depend on access to swimmable, drinkable, fishable waters.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 33 contacts → | ||||
Strong evidence “Water Management, Inc.(WMI) is well established in the field of water efficiency and conservation and has developed a successful track record since its founding in 1980.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 33 contacts → | ||||
Indirect evidence “Conserving our Natural Resources for Future Generations." WaterWise Consulting Inc.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 31 contacts → | ||||
Strong evidence “The National Water Research Institute (NWRI) is a science-oriented 501c3 nonprofit that has sponsored projects and programs since 1991 to improve water quality, protect public…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 31 contacts → | ||||
Partial evidence “Preserving Environment, Empowering Communities | 3L+ Lives impacted, 3.5M+ Trees Planted, 160+ water bodies rejuvenated/constructed.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 31 contacts → | ||||
Partial evidence “The Center for Watershed Protection works to advance clean water resources and healthy ecosystems through responsible land and water management.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: water conservation nonprofits. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names water conservation nonprofits.
- Partial evidence
- Its own public description names part of water conservation nonprofits, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name water conservation nonprofits. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 492 water conservation nonprofits worldwide
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Water conservation nonprofits worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among water conservation nonprofits, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for water conservation nonprofits are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “water conservation nonprofits”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names water conservation nonprofits), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among water conservation nonprofits, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 1,080 across the full list. 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 September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Water conservation nonprofits by location
1 lists · largest firstEvery Water conservation 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 Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names water conservation nonprofits, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many water conservation nonprofits are there worldwide?
RevenueBase identified 492 water conservation nonprofits worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Clean Water Action, headquartered in Washington, tops this list with the largest team on record.
Which country has the most water conservation nonprofits?
The United States leads with 169 companies. Every water conservation nonprofits list by country and city is linked on this page.
Which city has the most water conservation nonprofits?
Bangalore leads with 4 headquartered companies, followed by Denver (4) and Dubai (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,080 verified decision-maker contacts tracked across these 492 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 Smart Search, 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.