Company lists · Data refreshed September 2026

Top 25 Sewage treatment plant construction companies worldwide

RevenueBase identified 4,001 sewage treatment plant construction companies worldwide as of September 2026 and tracks 66,788 professional contacts across them, including 17,063 with verified work emails and 0 with mobile numbers. India is the largest market and Pune the largest hub.

This list covers sewage treatment plant construction 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 16, 2026. Country and city lists for sewage treatment plant construction 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 16, 2026 86% judged on-target in blind review
4,001Companies
66,788Contacts tracked
17,063Verified emails
0Mobile numbers
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The 25 largest sewage treatment plant construction companies worldwide

Ranked by team size
Top 25 of 4,001 sewage treatment plant construction companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to sewage treatment plant construction 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMumbai, IndiaHQ checked Sep 16, 20261,001-5,0003,810 contacts →

Partial 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 16, 2026
2Indirect evidenceWalnut Creek, CA, United StatesHQ checked Sep 16, 20261,001-5,0002,473 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 16, 2026
3Indirect evidenceWalnut Creek, CA, United StatesHQ checked Sep 16, 20261,001-5,0001,718 contacts →

Indirect evidence

“For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
4Strong evidenceDhar, IndiaHQ checked Sep 16, 2026n/a1,196 contacts →

Strong 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 16, 2026
5Partial evidenceStockport, United KingdomHQ checked Sep 16, 20261,001-5,000879 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 16, 2026
6Partial evidenceMontreal, QC, CanadaHQ checked Sep 16, 2026501-1,000829 contacts →

Partial 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 16, 2026
7Indirect evidenceDoetinchem, NetherlandsHQ checked Sep 16, 20261,001-5,000609 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 16, 2026
8Partial evidenceSalt Lake City, UT, United StatesHQ checked Sep 16, 2026501-1,000554 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 16, 2026
9Indirect evidencePaço De Arcos, PortugalHQ checked Sep 16, 202651-200502 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 16, 2026
10Indirect evidenceOpheusden, NetherlandsHQ checked Sep 16, 2026501-1,000435 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 16, 2026
11Indirect evidenceGuarulhos, BrazilHQ checked Sep 16, 2026501-1,000434 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 16, 2026
12Partial evidenceWaukegan, IL, United StatesHQ checked Sep 16, 2026201-500389 contacts →

Partial 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 16, 2026
13Indirect evidenceGenova, ItalyHQ checked Sep 16, 202651-200362 contacts →

Indirect evidence

“Fisia Italimpianti S.p.A, part of Webuild Group (the new group born in 2020 from Salini Impregilo), is a worldwide leader in the sustainable design and execution of water…”

Source: RevenueBase Database · checked Sep 16, 2026
14Strong evidenceChennai, IndiaHQ checked Sep 16, 20265,001-10,000350 contacts →

Strong evidence

“L&T Construction's Water & Effluent Treatment business vertical provides state-of-the-art design, detailed engineering, procurement, project management, project execution…”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceRiyadh, Saudi ArabiaHQ checked Sep 16, 20261,001-5,000347 contacts →

Indirect evidence

“Established in 1964, Abdullah Ibrahim Al Sayegh and Sons Company a Closed Joint Stock Co.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceDelhi, IndiaHQ checked Sep 16, 2026501-1,000323 contacts →

Indirect evidence

“Since 2009, Enviro has combined engineering excellence with a commitment to sustainability in water and wastewater solutions across India." Enviro Infra Engineers Limited stands…”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceSão Paulo, BrazilHQ checked Sep 16, 20261,001-5,000307 contacts →

Indirect evidence

“Com mais de 30 anos de atuação no mercado brasileiro, a Enfil é uma empresa referência em soluções ambientais para tratamento de água, efluentes e controle de emissões…”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceCastellón De La Plana, SpainHQ checked Sep 16, 20261,001-5,000305 contacts →

Indirect evidence

“Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceTlacoquemécatl, MexicoHQ checked Sep 16, 2026501-1,000305 contacts →

Indirect evidence

“En TICSA ofrecemos conocimiento y experiencia para crear soluciones innovadoras para el diseño, construcción, operación y mantenimiento de plantas de tratamiento de agua que den…”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidencePraha 1, Czech RepublicHQ checked Sep 16, 20261,001-5,000296 contacts →

Indirect evidence

“Akcionáři společnosti: Hlavní činnosti: Provozování vodovodů a kanalizací Úprava vod a čistění odpadních vod Poradenství ve vodohospodářské činnosti Investorsko-inženýrská činnost…”

Source: RevenueBase Database · checked Sep 16, 2026
21Partial evidenceOld Saybrook, CT, United StatesHQ checked Sep 16, 2026501-1,000295 contacts →

Partial evidence

“Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceTrento, ItalyHQ checked Sep 16, 2026n/a288 contacts →

Indirect evidence

“ETC is a consultancies and services company focused on environmental sector, made up of environmental and civil engineers.”

Source: RevenueBase Database · checked Sep 16, 2026
23Strong evidencePune, IndiaHQ checked Sep 16, 2026501-1,000287 contacts →

Strong evidence

“WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceCapinzal, BrazilHQ checked Sep 16, 2026201-500275 contacts →

Indirect evidence

“Somos uma das principais indústrias do segmento metalmecânico, com sede em Santa Catarina e atuação internacional.”

Source: RevenueBase Database · checked Sep 16, 2026
25Indirect evidenceBerching, United Arab EmiratesHQ checked Sep 16, 20261,001-5,000254 contacts →

Indirect evidence

“HUBER is a globally operating company with over employees, of which around work at the headquarters in Berching (Germany).”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 4,001 sewage treatment plant construction companies worldwide

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Sewage treatment plant construction companies worldwide at a glance

As of Sep 16, 2026
25.5%Verified-email coverage
16.7Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Pune
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
1,396
11-50
1,610
51-200
710
201-500
169
501-1,000
45
1,001-5,000
34
5,001-10,000
8
10001+
6

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 sewage treatment plant construction 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
25 countries, largest first: India, the United States, Brazil, Italy, Germany, the United Kingdom, Türkiye, France, Canada, Spain and 15 more. Country and city lists for sewage treatment plant construction companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “sewage treatment plant construction 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 sewage treatment plant construction 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 sewage treatment plant construction 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, 17,063 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 16, 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.

Sewage treatment plant construction companies by location

29 lists · largest first

Every Sewage treatment plant construction 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 sewage treatment plant construction 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 sewage treatment plant construction companies are there worldwide?

RevenueBase identified 4,001 sewage treatment plant construction 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?

ION Exchange India LTD, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most sewage treatment plant construction companies?

India leads with 758 companies, followed by the United States (742) and Brazil (301). Every sewage treatment plant construction companies list by country and city is linked on this page.

Which city has the most sewage treatment plant construction companies?

Pune leads with 83 headquartered companies, followed by Ahmedabad (57) and Chennai (51).

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 17,063 verified decision-maker contacts tracked across these 4,001 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 16, 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.