Company lists · Data refreshed November 2026

Top 25 Stormwater management nonprofits worldwide

RevenueBase identified 1,338 company matches for stormwater management nonprofits worldwide as of November 2026 and tracks 14,468 professional contacts across them, including 5,923 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for stormwater management 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 stormwater management 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
1,338Companies
14,468Contacts tracked
5,923Verified emails
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The 25 largest stormwater management nonprofits worldwide

Ranked by team size
Top 25 of 1,338 company matches for stormwater management 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 matchMelbourne, AustraliaHQ recorded Nov 6, 20261,001-5,0001,519 contacts →

Exact match

“In Melbourne, water is essential to our way of life.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchCleveland, OH, United StatesHQ recorded Nov 6, 2026501-1,000488 contacts →

Exact match

“The Northeast Ohio Regional Sewer District protects public health and the environment by leading effective wastewater and stormwater management.”

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 matchLouisville, KY, United StatesHQ recorded Nov 6, 2026501-1,000371 contacts →

Exact match

“Louisville MSD is more than a city service; we’re a vision into the future of Louisville.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchFort Wright, KY, United StatesHQ recorded Nov 6, 2026201-500191 contacts →

Exact match

“Welcome to Sanitation District No.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSaint-jean-sur-richelieu, QC, CanadaHQ recorded Nov 6, 2026501-1,000168 contacts →

Exact match

“1st developer of solutions for mastering water sustainably.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCologne, GermanyHQ recorded Nov 6, 2026501-1,000156 contacts →

Exact match

“Stadtentwässerungsbetriebe Köln, AöR is a government administration company based out of Ostmerheimer Str.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBeverly Hills, CA, United StatesHQ recorded Nov 6, 202651-200154 contacts →

Exact match

“As the Los Angeles region faces severe impacts from climate change, TreePeople unites the power of trees, people and nature-based solutions to grow a more climate-ready city.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMorrisville, CO, United StatesHQ recorded Nov 6, 2026501-1,000151 contacts →

Exact match

“AQUALIS is the national leader in water management, compliance and engineering, helping businesses meet complex water regulations while protecting long-term infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNashville, TN, United StatesHQ recorded Nov 6, 2026501-1,000134 contacts →

Exact match

“Stormwater Solutions That Work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“CMS Environmental Solutions is a stormwater compliance consultant providing NOI permitting, development, dewatering planning, site inspections, and custom stormwater management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHamilton, ON, CanadaHQ recorded Nov 6, 202651-200127 contacts →

Exact match

“Hamilton Conservation Authority, located at the western end of Lake Ontario, is the area’s largest environmental management agency, and is dedicated to the conservation and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchMillersville, MD, United StatesHQ recorded Nov 6, 2026201-500116 contacts →

Exact match

“Our mission is to be the keystone species in the restoration of the Chesapeake Bay.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRomeoville, IL, United StatesHQ recorded Nov 6, 202651-200112 contacts →

Exact match

“StormTrap offers proven, leading-edge solutions for managing runoff, protecting waterways and improving the use of your property.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact 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
16Exact matchLivermore, United StatesHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“We provide excellent water and flood protection services to enhance the quality of life, economic vitality and environmental health of the communities we serve.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCouncil Bluffs, IA, United KingdomHQ recorded Nov 6, 202651-20089 contacts →

Exact match

“At GreenBlue Urban, we believe better cities start with better infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact 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
19Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDachstein, FranceHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“Fabricant de solutions pour la gestion des eaux pluviales et le traitement des eaux usées”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRoanoke, FL, United StatesHQ recorded Nov 6, 202611-5069 contacts →

Exact match

“Southeast Rural Community Assistance Project, Inc.(SERCAP) helps small rural towns and communities needing aid in upgrading their water and wastewater systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSainte-mere-eglise, FranceHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Simop has been designing, manufacturing and distributing wastewater and stormwater management solutions for 40 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchVaughan, ON, CanadaHQ recorded Nov 6, 202611-5066 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchNice, FranceHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Syndicat Mixte pour les Inondations, l'Aménagement et la Gestion de l'Eau Maralpin créé en 2017 et labellisé Établissement Public Territorial de Bassin (EPTB) en 2018.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPortland, CA, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“The Freshwater Trust is focused on using insight to solve problems at the intersection of water and the economy.”

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

Showing 25 of 1,338 stormwater management nonprofits worldwide

See the full list, filter by size, metro and specialty, and access 5,923 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Stormwater management nonprofits worldwide at a glance

As of Nov 6, 2026
40.9%Verified-email coverage
10.8Average contacts per company
1-10Median size (employees)
1.0%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
897
11-50
326
51-200
76
201-500
12
501-1,000
11
1,001-5,000
1
5,001-10,000
3
10001+
1

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 stormwater management nonprofits are linked below.
What qualifies
Company records worldwide whose business descriptions match “stormwater management 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 5,923 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.

Stormwater management nonprofits by location

5 lists · largest first

Every Stormwater management 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 “stormwater management nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many stormwater management nonprofits are there worldwide?

RevenueBase identified 1,338 company matches for stormwater management 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?

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

Which country has the most stormwater management nonprofits?

The United States leads with 730 companies, followed by Canada (80) and France (44). Every stormwater management nonprofits list by country and city is linked on this page.

Which city has the most stormwater management nonprofits?

Houston leads with 14 company records, followed by Washington (14) and Los Angeles (12).

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 5,923 professional contacts with verified work emails tracked across these 1,338 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.