Company lists · Data refreshed September 2026

Top 25 Wastewater treatment companies based in India

Name: Wastewater treatment companies based in India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 1,199 companies tracked

RevenueBase identified 1,199 wastewater treatment companies headquartered in India as of September 2026 and tracks 21,944 professional contacts across them, including 1,769 with verified work emails. Pune is the largest hub.

This list covers wastewater treatment companies headquartered in India, 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.

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

1,199Companies

21,944Contacts tracked

1,769Verified emails

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The 25 largest wastewater treatment companies based in India

Ranked by team size

Top 25 of 1,199 wastewater treatment companies based in India, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater treatment 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	ION Exchange India LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 16, 2026	1,001-5,000	3,810 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
2	VA Tech Wabag LTD	Indirect evidence	Wabag House, IndiaHQ checked Sep 16, 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 16, 2026
3	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 16, 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 16, 2026
4	Jwil Infra Limited	Partial evidence	New Delhi, IndiaHQ checked Sep 16, 2026	501-1,000	628 contacts →
	Partial evidence “JWIL Infra Limited is an EPC, Turnkey Solutions Provider Company in Water and Wastewater Sector.” Source: RevenueBase Database · checked Sep 16, 2026
5	Rochem Separation Systems India Pvt. LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 16, 2026	1,001-5,000	536 contacts →
	Partial evidence “We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.” Source: RevenueBase Database · checked Sep 16, 2026
6	Clean Harbors India	Indirect evidence	Hyderabad, IndiaHQ checked Sep 16, 2026	1,001-5,000	450 contacts →
	Indirect evidence “Clean Harbors India has been strategically established as the Global Capability Center (GCC) to serve our parent company.” Source: RevenueBase Database · checked Sep 16, 2026
7	L&t	Partial evidence	Chennai, IndiaHQ checked Sep 16, 2026	5,001-10,000	350 contacts →
	Partial 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
8	Jash Engineering Limited	Strong evidence	Indore-, IndiaHQ checked Sep 16, 2026	501-1,000	348 contacts →
	Strong evidence “An ISO-9001:2015 / ISO-14001:2015 / OHSAS ISO 45001:2018 certified company dedicated to offering varied products for use in Water and Wastewater Pumping Stations and Treatment…” Source: RevenueBase Database · checked Sep 16, 2026
9	Vasu Chemicals LLP	Partial evidence	Mumbai, IndiaHQ checked Sep 16, 2026	501-1,000	330 contacts →
	Partial evidence “Vasu Chemicals LLP is India's leading industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 16, 2026
10	Enviro Infra Engineers LTD	Partial evidence	Delhi, IndiaHQ checked Sep 16, 2026	501-1,000	323 contacts →
	Partial 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
11	WTE Infra Projects Pvt. LTD	Strong evidence	Pune, IndiaHQ checked Sep 16, 2026	501-1,000	287 contacts →
	Strong evidence “WTE is a globally recognised manufacturer & exporter of innovative Water & Wastewater Treatment Plants.” Source: RevenueBase Database · checked Sep 16, 2026
12	Chembond Water Technologies Limited	Partial evidence	Navi Mumbai, IndiaHQ checked Sep 16, 2026	201-500	252 contacts →
	Partial evidence “Chembond Water Technologies Limited specializes in delivering advanced water treatment solutions for industrial and institutional applications.” Source: RevenueBase Database · checked Sep 16, 2026
13	HNB Engineers Pvt. LTD	Indirect evidence	Pune, IndiaHQ checked Sep 16, 2026	201-500	191 contacts →
	Indirect evidence “HNB ENGINEERS PVT.” Source: RevenueBase Database · checked Sep 16, 2026
14	Membrane Group India Pvt. LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 16, 2026	201-500	167 contacts →
	Indirect evidence “Water is life.” Source: RevenueBase Database · checked Sep 16, 2026
15	Rean Watertech Pvt. LTD	Partial evidence	Rajarhat, IndiaHQ checked Sep 16, 2026	51-200	160 contacts →
	Partial evidence “REAN aspires to contribute significantly in improving India’s infrastructure by its proficiency in water treatment and distribution along with waste management in municipal…” Source: RevenueBase Database · checked Sep 16, 2026
16	Aquatech Systems Asia Private Limited	Strong evidence	Pune, IndiaHQ checked Sep 16, 2026	201-500	153 contacts →
	Strong evidence “Aquatech is a global leader in water purification systems and wastewater treatment technology for industrial and infrastructure markets.” Source: RevenueBase Database · checked Sep 16, 2026
17	Euroteck Environmental PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 16, 2026	201-500	133 contacts →
	Indirect evidence “Euroteck Environmental Pvt.” Source: RevenueBase Database · checked Sep 16, 2026
18	BIO Petro Clean	Strong evidence	New Delhi, IndiaHQ checked Sep 16, 2026	51-200	115 contacts →
	Strong evidence “BioPetroClean™: Revolutionizing Wastewater Treatment BioPetroClean™ is a leading cleantech company dedicated to transforming wastewater treatment through innovation and technology.” Source: RevenueBase Database · checked Sep 16, 2026
19	INDRA	Partial evidence	Thane, IndiaHQ checked Sep 16, 2026	51-200	86 contacts →
	Partial evidence “Solving the toughest water management, treatment and process challenges globally.” Source: RevenueBase Database · checked Sep 16, 2026
20	Saurashtra Enviro Projects PVT Ltd, A Detox Group Company	Partial evidence	Surat, IndiaHQ checked Sep 16, 2026	201-500	72 contacts →
	Partial evidence “Municipal & industrial waste management plants, legacy waste treatment and bioremediation, Industrial effluent and sewage treatment plants with complete ZLD scheme, suppliers of…” Source: RevenueBase Database · checked Sep 16, 2026
21	WTT International PVT LTD	Partial evidence	Tiruppur, IndiaHQ checked Sep 16, 2026	51-200	71 contacts →
	Partial evidence “With a period of about 30 years in Water Treatment, WTT International being a Pioneer in the field of Textile Water Treatment and an expertise in providing solution to other…” Source: RevenueBase Database · checked Sep 16, 2026
22	Green Method Engineering P LTD	Indirect evidence	Kalamassery, IndiaHQ checked Sep 16, 2026	201-500	69 contacts →
	Indirect evidence “GME is an approved 'A Class' consultant of Kerala State Pollution Control Board.” Source: RevenueBase Database · checked Sep 16, 2026
23	Hydrotech Paryavaran India Pvt. LTD	Indirect evidence	Sas Nagar, IndiaHQ checked Sep 16, 2026	201-500	68 contacts →
	Indirect evidence “Hydrotech Paryavaran (India) Pvt.” Source: RevenueBase Database · checked Sep 16, 2026
24	Enhanced Wapp Systems India Pvt. LTD	Indirect evidence	Gurugram, IndiaHQ checked Sep 16, 2026	501-1,000	64 contacts →
	Indirect evidence “Total Water Management - Operations Services Wapp offers total water management and operations to hotels, hospitals, retail, commercial buildings, IT parks, malls, warehouses…” Source: RevenueBase Database · checked Sep 16, 2026
25	Shreeji Aqua Treatment Pvt. LTD	Indirect evidence	Pune, IndiaHQ checked Sep 16, 2026	51-200	61 contacts →
	Indirect evidence “We are a growing family of 120, endeavouring excellence with care and growth since 1989.” Source: RevenueBase Database · checked Sep 16, 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: wastewater treatment 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 wastewater treatment companies.
Partial evidence: Its own public description names part of wastewater treatment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater treatment 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 1,199 wastewater treatment companies based in India

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Wastewater treatment companies based in India at a glance

As of Sep 16, 2026

8.1%Verified-email coverage

18.3Average contacts per company

11-50Median size (employees)

9.5%Largest-city concentration · Pune

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

324

11-50

464

51-200

308

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 1,199 companies.

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 wastewater treatment 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.
What qualifies: Companies headquartered in India whose own description of what they do matches “wastewater treatment 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 wastewater treatment 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 wastewater treatment companies, and records with no verified work email. Companies headquartered outside India are excluded even when they keep an office there.
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, 1,769 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.

Wastewater treatment companies by metro

Wastewater treatment companies in Pune114
Wastewater treatment companies in Ahmedabad85
Wastewater treatment companies in Chennai85
Wastewater treatment companies in New Delhi74
Wastewater treatment companies in Mumbai64
Wastewater treatment companies in Bangalore45
Wastewater treatment companies in Delhi40
Wastewater treatment companies in Hyderabad36
Wastewater treatment companies in Noida32
Wastewater treatment companies in Kolkata26

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 wastewater treatment 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 wastewater treatment companies are there based in India?

RevenueBase identified 1,199 wastewater treatment companies headquartered in India 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 city has the most wastewater treatment companies?

Pune leads with 114 headquartered companies, followed by Ahmedabad (85) and Chennai (85).

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 1,769 verified decision-maker contacts tracked across these 1,199 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.