Company lists · Data refreshed September 2026

Top 25 Biological treatment system installers worldwide

Name: Biological treatment system installers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,632 companies tracked

RevenueBase identified 1,632 biological treatment system installers worldwide as of September 2026 and tracks 15,257 professional contacts across them, including 3,563 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers biological treatment system installers 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 19, 2026. Country and city lists for biological treatment system installers 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 19, 2026 86% judged on-target in blind review

1,632Companies

15,257Contacts tracked

3,563Verified emails

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The 25 largest biological treatment system installers worldwide

Ranked by team size

Top 25 of 1,632 biological treatment system installers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to biological treatment system installers: 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	Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions	Partial evidence	Old Saybrook, CT, United StatesHQ checked Sep 19, 2026	501-1,000	295 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 19, 2026
2	Esli Pollet Water Group	Indirect evidence	Antalya, TürkiyeHQ checked Sep 19, 2026	201-500	221 contacts →
	Indirect evidence “Esli PWG Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
3	MAT Filtration Technologies	Strong evidence	Güzelbahçe, TürkiyeHQ checked Sep 19, 2026	501-1,000	191 contacts →
	Strong evidence “MAT FILTRATION TECHNOLOGIES is a design and manufacturing leader of specialty water treatment equipment for industrial & municipal applications, Recirculating Aquaculture Systems…” Source: RevenueBase Database · checked Sep 19, 2026
4	BW Water	Indirect evidence	Singapore, United StatesHQ checked Sep 19, 2026	201-500	179 contacts →
	Indirect evidence “Together with our customers, BW Water, now part of De Nora Water Technologies, is committed to addressing the world's most critical water challenges.” Source: RevenueBase Database · checked Sep 19, 2026
5	Paques	Indirect evidence	Balk, NetherlandsHQ checked Sep 19, 2026	201-500	176 contacts →
	Indirect evidence “Paques helps companies and municipalities contribute to the major challenges of today: to reduce their water and carbon footprints and reclaim valuable resources.” Source: RevenueBase Database · checked Sep 19, 2026
6	Smith & Loveless INC	Strong evidence	Lenexa, KS, United StatesHQ checked Sep 19, 2026	201-500	172 contacts →
	Strong evidence “S&L delivers long-lasting, reliable and easy-to-operate wastewater pumping and treatment systems for municipal, federal, and industrial-commercial applications.” Source: RevenueBase Database · checked Sep 19, 2026
7	Orenco Systems, INC	Indirect evidence	Sutherlin, OR, United StatesHQ checked Sep 19, 2026	201-500	170 contacts →
	Indirect evidence “Nobody wants to worry about whether their wastewater is contaminating nearby rivers, streams, and wells.” Source: RevenueBase Database · checked Sep 19, 2026
8	Atlan Stormwater	Strong evidence	Sydney Olympic Park, AustraliaHQ checked Sep 19, 2026	201-500	147 contacts →
	Strong evidence “At Atlan Stormwater, we draw on more than 45 years’ experience in the design, testing and manufacture of water treatment systems that are utilised in over 45 countries.” Source: RevenueBase Database · checked Sep 19, 2026
9	Euroteck Environmental PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 19, 2026	201-500	133 contacts →
	Indirect evidence “Euroteck Environmental Pvt.” Source: RevenueBase Database · checked Sep 19, 2026
10	Tomorrow Water	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 19, 2026	51-200	133 contacts →
	Partial evidence “Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.” Source: RevenueBase Database · checked Sep 19, 2026
11	B&f Dias	Indirect evidence	Vinhedo, BrazilHQ checked Sep 19, 2026	51-200	116 contacts →
	Indirect evidence “A B&F Dias é referência mundial em soluções para tratamento de águas e efluentes.” Source: RevenueBase Database · checked Sep 19, 2026
12	Global Water & Energy	Partial evidence	Bruges, BelgiumHQ checked Sep 19, 2026	51-200	111 contacts →
	Partial evidence “GLOBAL WATER & ENERGY (GWE) is a full solution provider to the global marketplace for industrial water and wastewater treatment, water reuse, biomass digestion, sludge, and slurry…” Source: RevenueBase Database · checked Sep 19, 2026
13	World Water Works, INC	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	97 contacts →
	Partial evidence “At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.” Source: RevenueBase Database · checked Sep 19, 2026
14	Prochem INC	Indirect evidence	Elliston, VA, United StatesHQ checked Sep 19, 2026	51-200	95 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
15	EDI Environmental Dynamics International	Strong evidence	Columbia, MO, United StatesHQ checked Sep 19, 2026	201-500	87 contacts →
	Strong evidence “Environmental Dynamics International (EDI) specializes in the research, development and application of advanced technology aeration and biological treatment solutions.” Source: RevenueBase Database · checked Sep 19, 2026
16	Enviroway Bioscience PVT LTD	Indirect evidence	CanadaHQ checked Sep 19, 2026	51-200	87 contacts →
	Indirect evidence “A leader in environmental solutions and a pioneer in using biotechnology for waste water management, Enviro Way is ready for all kinds of challenges in helping you protect your…” Source: RevenueBase Database · checked Sep 19, 2026
17	Integrated Water Services	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Indirect evidence “We make water better.” Source: RevenueBase Database · checked Sep 19, 2026
18	Hitachi Aqua-Tech Engineering Pte. LTD	Indirect evidence	SingaporeHQ checked Sep 19, 2026	51-200	84 contacts →
	Indirect evidence “Incorporated in 1977 and based in Singapore, Hitachi Aqua-Tech has built a strong reputation as a specialist in water management solutions.” Source: RevenueBase Database · checked Sep 19, 2026
19	Clean Water Technology	Indirect evidence	Gardena, CA, United StatesHQ checked Sep 19, 2026	51-200	83 contacts →
	Indirect evidence “Did you know you can remove up to 98% of contaminants from industrial wastewater while shrinking your chemical spend and footprint?” Source: RevenueBase Database · checked Sep 19, 2026
20	Ecotec	Indirect evidence	Sallent, SpainHQ checked Sep 19, 2026	11-50	83 contacts →
	Indirect evidence “ECOTEC - Ecología Técnica, S.A.” Source: RevenueBase Database · checked Sep 19, 2026
21	PT Lautan Organo Water	Indirect evidence	Jakarta Barat, IndonesiaHQ checked Sep 19, 2026	201-500	81 contacts →
	Indirect evidence “PT LAUTAN ORGANO WATER was established in 2006 as an engineering company with name PT HYDRO HITECH OPTIMA (well known as H2O) at the beginning.” Source: RevenueBase Database · checked Sep 19, 2026
22	Bionest	Partial evidence	Shawinigan, QC, CanadaHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “Spécialiste dans le développement et la commercialisation de systèmes avancés d'épuration des eaux usées, Bionest offre des systèmes dont les performances inégalées permettent de…” Source: RevenueBase Database · checked Sep 19, 2026
23	Water & Wastewater Equipment Company	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 19, 2026	11-50	80 contacts →
	Partial evidence “Water and Wastewater Equipment Company has been providing efficient, cost-effective and compliant solutions to water and wastewater treatment applications for over 30 years.” Source: RevenueBase Database · checked Sep 19, 2026
24	Siltbuster LTD	Strong evidence	Monmouth, United KingdomHQ checked Sep 19, 2026	51-200	75 contacts →
	Strong evidence “At Siltbuster Ltd, we operate the UK’s largest rental fleet of water treatment systems, setting the industry benchmark for rapid, reliable, and cost-effective solutions.” Source: RevenueBase Database · checked Sep 19, 2026
25	Organica Water	Partial evidence	Budapest, HungaryHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “Organica Water is a group of passionate, committed and immensely talented professionals; looking to change the way the world thinks of wastewater treatment.” Source: RevenueBase Database · checked Sep 19, 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: biological treatment system installers. 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 biological treatment system installers.
Partial evidence: Its own public description names part of biological treatment system installers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biological treatment system installers. 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 1,632 biological treatment system installers worldwide

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Biological treatment system installers worldwide at a glance

As of Sep 19, 2026

23.4%Verified-email coverage

9.3Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

684

11-50

647

51-200

218

201-500

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 biological treatment system installers, 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 biological treatment system installers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “biological treatment system installers”. 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 biological treatment system installers), 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 biological treatment system installers, 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, 3,563 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 19, 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.

Biological treatment system installers by location

11 lists · largest first

Every Biological treatment system installers 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 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 biological treatment system installers, 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 biological treatment system installers are there worldwide?

RevenueBase identified 1,632 biological treatment system installers 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?

Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions, headquartered in Old Saybrook, tops this list with the largest team on record.

Which country has the most biological treatment system installers?

The United States leads with 269 companies, followed by India (213) and Germany (62). Every biological treatment system installers list by country and city is linked on this page.

Which city has the most biological treatment system installers?

Pune leads with 22 headquartered companies, followed by Chennai (16) and Ahmedabad (12).

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 3,563 verified decision-maker contacts tracked across these 1,632 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 19, 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.