Company lists · Data refreshed September 2026

Top 25 Water management consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 10,755 companies tracked

RevenueBase identified 10,755 water management consultants worldwide as of September 2026 and tracks 502,572 professional contacts across them, including 192,514 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers water management consultants 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 14, 2026. Country and city lists for water management consultants 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 14, 2026 86% judged on-target in blind review

10,755Companies

502,572Contacts tracked

192,514Verified emails

0Mobile numbers

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The 25 largest water management consultants worldwide

Ranked by team size

Top 25 of 10,755 water management consultants worldwide, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to water management consultants: 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	AECOM	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 14, 2026	10001+	63,914 contacts →
	Indirect evidence “AECOM is the global infrastructure leader, committed to delivering a better world.” Source: RevenueBase Database · checked Sep 14, 2026
2	Jacobs	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 14, 2026	10001+	46,351 contacts →
	Indirect evidence “At Jacobs, we're challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges.” Source: RevenueBase Database · checked Sep 14, 2026
3	Stantec	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 14, 2026	10001+	28,416 contacts →
	Indirect evidence “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Source: RevenueBase Database · checked Sep 14, 2026
4	SUEZ	Partial evidence	Paris, FranceHQ checked Sep 14, 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 14, 2026
5	GHD	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	10001+	14,572 contacts →
	Partial evidence “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: RevenueBase Database · checked Sep 14, 2026
6	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 14, 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 14, 2026
7	XYLEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 14, 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 14, 2026
8	WSP In The U.S	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	10001+	9,318 contacts →
	Indirect evidence “What if you could shape built and natural environments – and the future of those that use them?” Source: RevenueBase Database · checked Sep 14, 2026
9	CDM Smith	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	5,001-10,000	7,527 contacts →
	Partial evidence “CDM Smith is shaping what’s next, now, with world class solutions in water, environment, transportation and energy to public and private clients worldwide.” Source: RevenueBase Database · checked Sep 14, 2026
10	Pentair	Partial evidence	London, United KingdomHQ checked Sep 14, 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 14, 2026
11	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 14, 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 14, 2026
12	STV	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,556 contacts →
	Indirect evidence “STV offers professional services for the infrastructure that powers our lives.” Source: RevenueBase Database · checked Sep 14, 2026
13	Golder	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 14, 2026	5,001-10,000	3,167 contacts →
	Indirect evidence “Golder was acquired by WSP.” Source: RevenueBase Database · checked Sep 14, 2026
14	APTIM	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,639 contacts →
	Indirect evidence “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Source: RevenueBase Database · checked Sep 14, 2026
15	Veolia Australia & NEW Zealand	Strong evidence	Pyrmont, AustraliaHQ checked Sep 14, 2026	5,001-10,000	2,476 contacts →
	Strong evidence “Veolia Australia and New Zealand is a leading provider of environmental solutions across water and wastewater services, industrial cleaning, waste management and resource recovery…” Source: RevenueBase Database · checked Sep 14, 2026
16	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 14, 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 14, 2026
17	Geosyntec Consultants	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 14, 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 14, 2026
18	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 14, 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 14, 2026
19	Providence	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 14, 2026	n/a	2,232 contacts →
	Indirect evidence “Providence is an employee-owned engineering and environmental consulting firm.” Source: RevenueBase Database · checked Sep 14, 2026
20	Civil & Environmental Consultants, INC	Partial evidence	Moon Township, PA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,145 contacts →
	Partial 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 14, 2026
21	Olsson	Indirect evidence	Lincoln, NE, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,108 contacts →
	Indirect evidence “Olsson is an engineering firm made up of people who craft expert solutions and designs that improve communities.” Source: RevenueBase Database · checked Sep 14, 2026
22	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 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 14, 2026
23	R&q Ingeniería	Indirect evidence	Santiago, ChileHQ checked Sep 14, 2026	1,001-5,000	1,939 contacts →
	Indirect evidence “Con más de 49 años en el mercado, R&Q Ingeniería, de capitales chilenos, se ha consolidado como una consultora líder en la región.” Source: RevenueBase Database · checked Sep 14, 2026
24	ILF Consulting Engineers	Indirect evidence	FranceHQ checked Sep 14, 2026	1,001-5,000	1,747 contacts →
	Indirect evidence “The ILF Group (ILF) is an international engineering and consulting firm that helps its clients successfully execute technically demanding industrial and infrastructure projects.” Source: RevenueBase Database · checked Sep 14, 2026
25	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 14, 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 14, 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 consultants. 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 consultants.
Partial evidence: Its own public description names part of water management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water management consultants. 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 10,755 water management consultants worldwide

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Water management consultants worldwide at a glance

As of Sep 14, 2026

38.3%Verified-email coverage

46.7Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Sao Paulo

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

5,097

11-50

3,629

51-200

1,323

201-500

367

501-1,000

128

1,001-5,000

109

5,001-10,000

10001+

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 consultants, 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: 40 countries, largest first: the United States, Brazil, India, Canada, Germany, Australia, France, the United Kingdom, Spain, Italy and 30 more. Country and city lists for water management consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “water management consultants”. 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 consultants), 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 consultants, 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, 192,514 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 14, 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 consultants by location

56 lists · largest first

Every Water management consultants 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 consultants, 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 consultants are there worldwide?

RevenueBase identified 10,755 water management consultants 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?

AECOM, headquartered in Dallas, tops this list with the largest team on record.

Which country has the most water management consultants?

The United States leads with 2,980 companies, followed by Brazil (1,000) and India (859). Every water management consultants list by country and city is linked on this page.

Which city has the most water management consultants?

Sao Paulo leads with 114 headquartered companies, followed by Pune (88) and Houston (81).

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 192,514 verified decision-maker contacts tracked across these 10,755 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 14, 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.