Company lists · Data refreshed September 2026

Top 25 Water management consultancies worldwide

Name: Water management consultancies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 11,820 companies tracked

RevenueBase identified 11,820 water management consultancies worldwide as of September 2026 and tracks 267,673 professional contacts across them, including 86,964 with verified work emails. The United States is the largest market and Tehran the largest hub.

This list covers water management consultancies 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 29, 2026. Country and city lists for water management consultancies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

11,820Companies

267,673Contacts tracked

86,964Verified emails

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The 25 largest water management consultancies worldwide

Ranked by team size

Top 25 of 11,820 water management consultancies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to water management consultancies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SUEZ	Partial evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	21,549 contacts →
	Partial evidence “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Source: RevenueBase Database · checked Sep 29, 2026
2	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 29, 2026	10001+	12,999 contacts →
	Partial evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
3	XYLEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	10001+	9,320 contacts →
	Partial evidence “Xylem is the global leader in advanced technologies, solutions and services that address the world’s biggest water challenges.” Source: RevenueBase Database · checked Sep 29, 2026
4	Pentair	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	5,001-10,000	6,636 contacts →
	Partial evidence “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 29, 2026
5	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	3,810 contacts →
	Strong evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 29, 2026
6	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,473 contacts →
	Indirect evidence “Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.” Source: RevenueBase Database · checked Sep 29, 2026
7	Geosyntec Consultants	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,393 contacts →
	Indirect evidence “Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural…” Source: RevenueBase Database · checked Sep 29, 2026
8	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 29, 2026	1,001-5,000	2,375 contacts →
	Partial evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 29, 2026
9	Civil & Environmental Consultants, INC	Indirect evidence	Moon Township, PA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,145 contacts →
	Indirect evidence “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Source: RevenueBase Database · checked Sep 29, 2026
10	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 29, 2026
11	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,718 contacts →
	Partial evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 29, 2026
12	CHA Consulting, INC	Partial evidence	Albany, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,639 contacts →
	Partial evidence “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Source: RevenueBase Database · checked Sep 29, 2026
13	Swca Environmental Consultants	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,629 contacts →
	Partial evidence “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Source: RevenueBase Database · checked Sep 29, 2026
14	GEI Consultants, INC	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,604 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
15	Freese And Nichols	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,496 contacts →
	Indirect evidence “Freese and Nichols is a professional planning, consulting and engineering firm serving clients across the United States.” Source: RevenueBase Database · checked Sep 29, 2026
16	DHI	Partial evidence	Hørsholm, DenmarkHQ checked Sep 29, 2026	1,001-5,000	1,427 contacts →
	Partial evidence “There is no substitute for water.” Source: RevenueBase Database · checked Sep 29, 2026
17	Davey Resource Group, INC	Indirect evidence	Kent, OH, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,395 contacts →
	Indirect evidence “Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.” Source: RevenueBase Database · checked Sep 29, 2026
18	Aqualia	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	5,001-10,000	1,395 contacts →
	Partial evidence “Aqualia es la cuarta empresa de gestión del agua de Europa y la novena del Mundo por población servida, según el último ranking de Global Water Intelligence (diciembre de 2024).” Source: RevenueBase Database · checked Sep 29, 2026
19	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 29, 2026	n/a	1,196 contacts →
	Partial evidence “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Source: RevenueBase Database · checked Sep 29, 2026
20	Apex Companies	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,137 contacts →
	Indirect evidence “Who is Apex?” Source: RevenueBase Database · checked Sep 29, 2026
21	Barr Engineering CO	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,088 contacts →
	Indirect evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 29, 2026
22	Woodard & Curran	Partial evidence	Portland, ME, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,060 contacts →
	Partial evidence “Woodard & Curran is more than just a consulting firm – we are an employee-owned integrated science, engineering, design-build, and operations company specializing in water and…” Source: RevenueBase Database · checked Sep 29, 2026
23	WSP EN Chile	Indirect evidence	Vitacura, ChileHQ checked Sep 29, 2026	10001+	988 contacts →
	Indirect evidence “WSP en una empresa líder en servicios profesionales de consultoría en recursos hídricos, ingeniería, medio ambiente y sustentabilidad.” Source: RevenueBase Database · checked Sep 29, 2026
24	Inframark	Strong evidence	Horsham, PA, United StatesHQ checked Sep 29, 2026	1,001-5,000	973 contacts →
	Strong evidence “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Source: RevenueBase Database · checked Sep 29, 2026
25	Aquatech	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 29, 2026	501-1,000	903 contacts →
	Partial evidence “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Source: RevenueBase Database · checked Sep 29, 2026

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 management consultancies. 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 management consultancies.
Partial evidence: Its own public description names part of water management consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water management consultancies. 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 11,820 water management consultancies worldwide

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Water management consultancies worldwide at a glance

As of Sep 29, 2026

32.5%Verified-email coverage

22.6Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · Tehran

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

5,886

11-50

3,882

51-200

1,381

201-500

356

501-1,000

119

1,001-5,000

5,001-10,000

10001+

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 management consultancies, 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 management consultancies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “water management consultancies”. 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 management consultancies), 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 management consultancies, 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, 86,964 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 29, 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 management consultancies by location

55 lists · largest first

Every Water management consultancies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 management consultancies, 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 management consultancies are there worldwide?

RevenueBase identified 11,820 water management consultancies 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?

SUEZ, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most water management consultancies?

The United States leads with 2,007 companies, followed by India (784) and Brazil (592). Every water management consultancies list by country and city is linked on this page.

Which city has the most water management consultancies?

Tehran leads with 86 headquartered companies, followed by Sao Paulo (81) and Pune (75).

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 86,964 verified decision-maker contacts tracked across these 11,820 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 29, 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.