Company lists · Data refreshed October 2026

Top 25 Environmental treatment engineering firms based in India

Name: Environmental treatment engineering firms based in India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 1,359 companies tracked

RevenueBase identified 1,359 company matches for environmental treatment engineering firms associated with India as of October 2026 and tracks 28,473 professional contacts across them, including 2,411 with verified work emails. Pune is the largest hub.

This list covers company matches for environmental treatment engineering firms associated with India, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

1,359Companies

28,473Contacts tracked

2,411Verified emails

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The 25 largest environmental treatment engineering firms based in India

Ranked by team size

Top 25 of 1,359 company matches for environmental treatment engineering firms based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Oct 12, 2026	1,001-5,000	3,859 contacts →
	Exact match “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	RE Sustainability Limited	Exact match	Hyderabad, IndiaHQ recorded Oct 12, 2026	10001+	2,584 contacts →
	Exact match “Re is one of Asia’s leading integrated resource management and sustainability solutions companies, turning environmental challenges into sustainable value.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	VA Tech Wabag LTD	Exact match	Wabag House, IndiaHQ recorded Oct 12, 2026	1,001-5,000	2,412 contacts →
	Exact match “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Volvo Eicher Commerical Vehical Limited	Exact match	Dhar, IndiaHQ recorded Oct 12, 2026	n/a	1,155 contacts →
	Exact match “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	Jwil Infra Limited	Exact match	New Delhi, IndiaHQ recorded Oct 12, 2026	501-1,000	644 contacts →
	Exact match “JWIL Infra Limited is an EPC, Turnkey Solutions Provider Company in Water and Wastewater Sector.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	HECS	Exact match	Chennai, IndiaHQ recorded Oct 12, 2026	1,001-5,000	351 contacts →
	Exact match “We are India’s Leading Environmental Management Company and Service Provider, serving as a catalyst to the cause of Environmental preservation for the Industrial and Domestic…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Enviro Infra Engineers LTD	Exact match	Delhi, IndiaHQ recorded Oct 12, 2026	501-1,000	328 contacts →
	Exact match “Since 2009, Enviro has combined engineering excellence with a commitment to sustainability in water and wastewater solutions across India." Enviro Infra Engineers Limited stands…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	L&t	Exact match	Chennai, IndiaHQ recorded Oct 12, 2026	5,001-10,000	322 contacts →
	Exact match “L&T Construction's Water & Effluent Treatment business vertical provides state-of-the-art design, detailed engineering, procurement, project management, project execution…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Luthra Group	Exact match	Surat, IndiaHQ recorded Oct 12, 2026	201-500	296 contacts →
	Exact match “The Luthra Group is one of the leading and well equipped processing house of Surat, which ever since its inception has been moving ceaselessly on a growth track.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	WTE Infra Projects Pvt. LTD	Exact match	Pune, IndiaHQ recorded Oct 12, 2026	501-1,000	295 contacts →
	Exact match “WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	Chembond Water Technologies Limited	Exact match	Navi Mumbai, IndiaHQ recorded Oct 12, 2026	201-500	249 contacts →
	Exact match “Chembond Water Technologies Limited specializes in delivering advanced water treatment solutions for industrial and institutional applications.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Sima Labs	Exact match	New Delhi, IndiaHQ recorded Oct 12, 2026	51-200	189 contacts →
	Exact match “Incorporated in the year 1988, SIMA LABS is offering analytical testing services in the field of food products, pharmaceuticals & environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	HNB Engineers Pvt. LTD	Exact match	Pune, IndiaHQ recorded Oct 12, 2026	201-500	183 contacts →
	Exact match “HNB ENGINEERS PVT.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Membrane Group India Pvt. LTD	Exact match	Gurgaon, IndiaHQ recorded Oct 12, 2026	501-1,000	181 contacts →
	Exact match “Water is life.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	ECO Protection Engineers Pvt. LTD	Exact match	Chennai, IndiaHQ recorded Oct 12, 2026	501-1,000	178 contacts →
	Exact match “ECO PROTECTION ENGINEERS PRIVATE LIMITED (EPEPL), is a multi disciplinary engineering and EPC contracts company in the field of Water, Wastewater and Solid waste management…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	Aquatech Systems Asia Private Limited	Exact match	Pune, IndiaHQ recorded Oct 12, 2026	201-500	151 contacts →
	Exact match “Aquatech is a global leader in water purification systems and wastewater treatment technology for industrial and infrastructure markets.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Rean Watertech Pvt. LTD	Exact match	Rajarhat, IndiaHQ recorded Oct 12, 2026	51-200	150 contacts →
	Exact match “REAN aspires to contribute significantly in improving India’s infrastructure by its proficiency in water treatment and distribution along with waste management in municipal…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Euroteck Environmental PVT LTD	Exact match	Hyderabad, IndiaHQ recorded Oct 12, 2026	201-500	130 contacts →
	Exact match “Euroteck Environmental Pvt.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Kadam Environmental Consultants	Exact match	Vadodara, IndiaHQ recorded Oct 12, 2026	n/a	120 contacts →
	Exact match “Company Kadam was founded in 1981 : The company has over 150 engineers, scientists and technicians with specialization in various interdisciplinary areas such as environmental…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Fontus Water Private Limited	Exact match	New Delhi, IndiaHQ recorded Oct 12, 2026	51-200	120 contacts →
	Exact match “Fontus Water Pvt.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	ABC Techno Labs India Private Limited	Exact match	Chennai, IndiaHQ recorded Oct 12, 2026	201-500	118 contacts →
	Exact match “ABC Techno Labs is a leading Environmental,Health and Safety Engineering Consultancy and Laboratory constantly striving towards newer heights since its inception in 2006.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Wpil Limited	Exact match	Kolkata, IndiaHQ recorded Oct 12, 2026	501-1,000	110 contacts →
	Exact match “WPIL is a global leader in specialized pumping products and services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Effwa Infra & Research LTD	Exact match	Thane, IndiaHQ recorded Oct 12, 2026	51-200	109 contacts →
	Exact match “Effwa offers sustainable and innovative high-end engineering solutions to the environmental issues faced by various Industries and Municipal Authorities in India and overseas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Ecometrix Consultants	Exact match	Bhubaneswar, IndiaHQ recorded Oct 12, 2026	51-200	99 contacts →
	Exact match “Ecometrix Consultants Private Limited (EMC) is an ISO 9001:2015 Quality Certified consulting Firm focusing on water, wastewater & environment.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	BIO Petro Clean	Exact match	New Delhi, IndiaHQ recorded Oct 12, 2026	51-200	91 contacts →
	Exact match “BioPetroClean™: Revolutionizing Wastewater Treatment BioPetroClean™ is a leading cleantech company dedicated to transforming wastewater treatment through innovation and technology.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “environmental treatment engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 1,359 environmental treatment engineering firms based in India

See the full list, filter by size, metro and specialty, and access 2,411 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental treatment engineering firms based in India at a glance

As of Oct 12, 2026

8.5%Verified-email coverage

21.0Average contacts per company

11-50Median size (employees)

10.3%Largest-city concentration · Pune

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

367

11-50

538

51-200

325

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for India, so it is reported there. Company counts and contact totals on this page are exact for India, over 1,359 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with India whose business descriptions match “environmental treatment engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,411 professional contacts with verified work emails across the full matched dataset. 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 October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Environmental treatment engineering firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “environmental treatment engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental treatment engineering firms are there based in India?

RevenueBase identified 1,359 company matches for environmental treatment engineering firms associated with India as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ION Exchange India LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most environmental treatment engineering firms?

Pune leads with 140 company records, followed by Ahmedabad (91) and Chennai (86).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,411 professional contacts with verified work emails tracked across these 1,359 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 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 SmartSearch, 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.