Company lists · Data refreshed September 2026

Top 25 Sanitation system design companies worldwide

Name: Sanitation system design companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 6,578 companies tracked

RevenueBase identified 6,578 sanitation system design companies worldwide as of September 2026 and tracks 125,705 professional contacts across them, including 30,592 with verified work emails. India is the largest market and Pune the largest hub.

This list covers sanitation system design companies 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 sanitation system design companies 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 22, 2026 86% judged on-target in blind review

6,578Companies

125,705Contacts tracked

30,592Verified emails

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The 25 largest sanitation system design companies worldwide

Ranked by team size

Top 25 of 6,578 sanitation system design companies worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sanitation system design companies: 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	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	10001+	21,549 contacts →
	Indirect 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 22, 2026
2	ION Exchange India LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 22, 2026	1,001-5,000	3,810 contacts →
	Indirect 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 22, 2026
3	Aegea Saneamento	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 22, 2026	10001+	3,386 contacts →
	Indirect evidence “Somos a Aegea Saneamento, empresa líder no setor.” Source: RevenueBase Database · checked Sep 22, 2026
4	BRK Ambiental	Indirect evidence	BrazilHQ checked Sep 22, 2026	5,001-10,000	3,306 contacts →
	Indirect evidence “A BRK é uma das maiores empresas privadas de saneamento do país e está presente em 13 estados e mais de 100 municípios, beneficiando a vida de mais de 16 milhões de pessoas.” Source: RevenueBase Database · checked Sep 22, 2026
5	Brown And Caldwell	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 22, 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 22, 2026
6	VA Tech Wabag LTD	Indirect evidence	Wabag House, IndiaHQ checked Sep 22, 2026	1,001-5,000	2,375 contacts →
	Indirect evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 22, 2026
7	Carollo Engineers	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,718 contacts →
	Indirect evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 22, 2026
8	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 22, 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 22, 2026
9	MWH Treatment	Partial evidence	Stockport, United KingdomHQ checked Sep 22, 2026	1,001-5,000	879 contacts →
	Partial evidence “MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.” Source: RevenueBase Database · checked Sep 22, 2026
10	OVIVO	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 22, 2026	501-1,000	829 contacts →
	Indirect evidence “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Source: RevenueBase Database · checked Sep 22, 2026
11	Civil Works Company LTD	Indirect evidence	Al Raka Al Jenobiah, Saudi ArabiaHQ checked Sep 22, 2026	5,001-10,000	713 contacts →
	Indirect evidence “CWC is part of the Al Awael Construction Group which is 100% owned by Rashed Abdul Rahman Al Rashed group of companies (RAR), a well-known business conglomerate in the Kingdom of…” Source: RevenueBase Database · checked Sep 22, 2026
12	Ward And Burke	Indirect evidence	Kilcolgan, IrelandHQ checked Sep 22, 2026	1,001-5,000	632 contacts →
	Indirect evidence “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Source: RevenueBase Database · checked Sep 22, 2026
13	Primewater Infrastructure Corporation	Indirect evidence	Mandaluyong, PhilippinesHQ checked Sep 22, 2026	201-500	615 contacts →
	Indirect evidence “With over 30 years of industry experience, PrimeWater has provided total professional water and sewage management solutions to all of its partner communities and Water Districts…” Source: RevenueBase Database · checked Sep 22, 2026
14	Nijhuis Saur Industries	Indirect evidence	Doetinchem, NetherlandsHQ checked Sep 22, 2026	1,001-5,000	609 contacts →
	Indirect evidence “Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.” Source: RevenueBase Database · checked Sep 22, 2026
15	IDE Technologies	Indirect evidence	Kadima, IsraelHQ checked Sep 22, 2026	501-1,000	603 contacts →
	Indirect evidence “A world leader in water treatment solutions, IDE specializes in the development, engineering, construction and operation of enhanced desalination and industrial water treatment…” Source: RevenueBase Database · checked Sep 22, 2026
16	Westech Engineering	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 22, 2026	501-1,000	554 contacts →
	Partial evidence “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
17	AGS Water Solutions	Indirect evidence	Paço De Arcos, PortugalHQ checked Sep 22, 2026	51-200	502 contacts →
	Indirect evidence “AGS – Administração e Gestão de Sistemas de Salubridade, SA focuses on the preservation of the environment, acting throughout the entire water cycle.” Source: RevenueBase Database · checked Sep 22, 2026
18	GS Inima Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 22, 2026	1,001-5,000	439 contacts →
	Indirect evidence “A GS Inima Brasil é uma das maiores e mais respeitadas companhias privadas de saneamento do país, oferecendo soluções inovadoras e integradas.” Source: RevenueBase Database · checked Sep 22, 2026
19	GMB	Indirect evidence	Opheusden, NetherlandsHQ checked Sep 22, 2026	501-1,000	435 contacts →
	Indirect evidence “Al ruim een halve eeuw zetten we ons in voor duurzame oplossingen op het gebied van waterkwaliteit, waterveiligheid, bio-energie en industriële bouw en infra.” Source: RevenueBase Database · checked Sep 22, 2026
20	Grupo EP	Indirect evidence	Guarulhos, BrazilHQ checked Sep 22, 2026	501-1,000	434 contacts →
	Indirect evidence “Identificamos e solucionamos problemas relacionados ao tratamento de água e efluentes, reúso, dessalinização e análises ambientais para indústrias, consultorias ambientais e…” Source: RevenueBase Database · checked Sep 22, 2026
21	Glanua	Partial evidence	Galway, IrelandHQ checked Sep 22, 2026	201-500	417 contacts →
	Partial evidence “Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and deliver critical water and wastewater infrastructure across UK and…” Source: RevenueBase Database · checked Sep 22, 2026
22	Waterleau	Indirect evidence	Wespelaar, FranceHQ checked Sep 22, 2026	201-500	411 contacts →
	Indirect evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 22, 2026
23	UCC Environmental	Indirect evidence	Waukegan, IL, United StatesHQ checked Sep 22, 2026	201-500	389 contacts →
	Indirect evidence “UCC Environmental (UCC) is a global leader in environmental solutions for solids handling, wastewater treatment and pollution control technologies in power generation and other…” Source: RevenueBase Database · checked Sep 22, 2026
24	Baxter & Woodman	Indirect evidence	Crystal Lake, IL, United StatesHQ checked Sep 22, 2026	201-500	385 contacts →
	Indirect evidence “Founded in 1946, Baxter & Woodman, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
25	GS Inima Environment	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	1,001-5,000	373 contacts →
	Indirect evidence “Positioned as one of the companies with the largest number of plants in terms of concessions, GS Inima is a world benchmark in the water sector acting in all phases of the…” Source: RevenueBase Database · checked Sep 22, 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: sanitation system design companies. 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 sanitation system design companies.
Partial evidence: Its own public description names part of sanitation system design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sanitation system design companies. 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 6,578 sanitation system design companies worldwide

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Sanitation system design companies worldwide at a glance

As of Sep 22, 2026

24.3%Verified-email coverage

19.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Pune

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

2,471

11-50

2,523

51-200

1,038

201-500

326

501-1,000

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 sanitation system design companies, 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 sanitation system design companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sanitation system design companies”. 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 sanitation system design companies), 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 sanitation system design companies, 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, 30,592 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.

Sanitation system design companies by location

33 lists · largest first

Every Sanitation system design companies 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 sanitation system design companies, 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 sanitation system design companies are there worldwide?

RevenueBase identified 6,578 sanitation system design companies 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 sanitation system design companies?

India leads with 817 companies, followed by the United States (676) and Brazil (495). Every sanitation system design companies list by country and city is linked on this page.

Which city has the most sanitation system design companies?

Pune leads with 89 headquartered companies, followed by Sao Paulo (68) and Ahmedabad (59).

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 30,592 verified decision-maker contacts tracked across these 6,578 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.