Company lists · Data refreshed September 2026

Top 25 Wastewater energy recovery companies based in India

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 266 companies tracked

RevenueBase identified 266 wastewater energy recovery companies headquartered in India as of September 2026 and tracks 8,250 professional contacts across them, including 416 with verified work emails. Pune is the largest hub.

This list covers wastewater energy recovery 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 19, 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 19, 2026 86% judged on-target in blind review

266Companies

8,250Contacts tracked

416Verified emails

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The 25 largest wastewater energy recovery companies based in India

Ranked by team size

Top 25 of 266 wastewater energy recovery companies based in India, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater energy recovery 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	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 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 19, 2026
2	Volvo Eicher Commerical Vehical Limited	Indirect evidence	Dhar, IndiaHQ checked Sep 19, 2026	n/a	1,196 contacts →
	Indirect 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 19, 2026
3	Membrane Group India Pvt. LTD	Indirect evidence	Gurgaon, IndiaHQ checked Sep 19, 2026	201-500	167 contacts →
	Indirect evidence “Water is life.” Source: RevenueBase Database · checked Sep 19, 2026
4	Aquatech Systems Asia Private Limited	Partial evidence	Pune, IndiaHQ checked Sep 19, 2026	201-500	153 contacts →
	Partial evidence “Aquatech is a global leader in water purification systems and wastewater treatment technology for industrial and infrastructure markets.” Source: RevenueBase Database · checked Sep 19, 2026
5	Thermax Onsite Energy Solutions Limited Toesl	Partial evidence	Pune, IndiaHQ checked Sep 19, 2026	51-200	150 contacts →
	Partial evidence “TOESL, a wholly owned subsidiary of Thermax Group, provides renewable, recycling and recovery solutions under the Build-Own-Operate (BOO) business model.” Source: RevenueBase Database · checked Sep 19, 2026
6	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
7	BIO Petro Clean	Partial evidence	New Delhi, IndiaHQ checked Sep 19, 2026	51-200	115 contacts →
	Partial 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 19, 2026
8	Indian ION Exchange And Chemicals LTD	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “Indian Ion Exchange & Chemicals Limited formed in1994 by experienced water treatment technocrats and engineering professionals to apply new technology of Advance Ion Exchange…” Source: RevenueBase Database · checked Sep 19, 2026
9	A.T.E. Huber Envirotech	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	51-200	52 contacts →
	Indirect evidence “We, A.T.E.” Source: RevenueBase Database · checked Sep 19, 2026
10	Apex Ecotech Limited	Indirect evidence	Pune, IndiaHQ checked Sep 19, 2026	51-200	48 contacts →
	Indirect evidence “Apex Ecotech Limited (formerly known as Apex Ecotech Private Limited) was established in 2009 by a group of dedicated professionals and has emerged as a leading provider of…” Source: RevenueBase Database · checked Sep 19, 2026
11	SUN Enviro Technologies Pvt. LTD	Partial evidence	Nagpur, IndiaHQ checked Sep 19, 2026	51-200	48 contacts →
	Partial evidence “We are delighted to introduce ourselves as Sun Enviro Technologies Pvt Ltd, a leading provider of wastewater treatment plants, water treatment plants, water recycle plants, sewage…” Source: RevenueBase Database · checked Sep 19, 2026
12	Concord Enviro Systems Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	46 contacts →
	Partial evidence “We as, Concord Enviro are a global company offering 100% water reuse solutions to treat industrial wastewater.” Source: RevenueBase Database · checked Sep 19, 2026
13	Mailhem Environment Pvt. LTD	Indirect evidence	Pune, IndiaHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “Mailhem Ikos aims to be a one-stop solution to all waste management problems.” Source: RevenueBase Database · checked Sep 19, 2026
14	World Water Works International	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	51-200	41 contacts →
	Partial evidence “World Water Works International Inc together with its affiliated companies is an innovator in the water & wastewater treatment industry, driven to help industrial and municipal…” Source: RevenueBase Database · checked Sep 19, 2026
15	Felix Industries Limited	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 19, 2026	51-200	39 contacts →
	Indirect evidence “Felix Industries Limited is a water and waste water recycling and management company based out of Ahmedabad, Gujarat, India.” Source: RevenueBase Database · checked Sep 19, 2026
16	ECO Care Engineering Private Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 19, 2026	51-200	38 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
17	Ecotech Engineering	Partial evidence	Bangalore, IndiaHQ checked Sep 19, 2026	201-500	36 contacts →
	Partial evidence “Pioneers & Leaders in Wastewater Treatment, Recycle, and Reuse.” Source: RevenueBase Database · checked Sep 19, 2026
18	Transparent Energy Systems Private Limited	Partial evidence	Pune, IndiaHQ checked Sep 19, 2026	51-200	35 contacts →
	Partial evidence “Technology leader in fields of Waste Heat Recovery Boilers & Systems, Turnkey Waste Heat driven Power Plants, Process Boilers & Heaters, Zero Liquid Discharge Systems, Super…” Source: RevenueBase Database · checked Sep 19, 2026
19	Hydroflux Engineering PVT LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 19, 2026	51-200	32 contacts →
	Indirect evidence “Hydroflux Engineering Pvt Ltd is a trusted STP plant manufacturer and ETP plant manufacturer based in Delhi & Mumbai, serving industries across North and South India.” Source: RevenueBase Database · checked Sep 19, 2026
20	Metcon Water Systems Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “For over four decades, Metcon Water Systems Pvt.” Source: RevenueBase Database · checked Sep 19, 2026
21	ERA Hydro- Biotech Energy Private Limited	Partial evidence	Pune, IndiaHQ checked Sep 19, 2026	51-200	24 contacts →
	Partial evidence “Since our establishment in the year 2006, we Era Hydro- Biotech Energy Private Limited are Manufacturer, Wholesaler, Exporter, Service Provider and Trader, engaged in offering a…” Source: RevenueBase Database · checked Sep 19, 2026
22	MM Enviro Projects Private Limited	Indirect evidence	Nagpur, IndiaHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence “MM Enviro Projects Pvt.” Source: RevenueBase Database · checked Sep 19, 2026
23	Sbsenviro Aqua Concepts Pvt. LTD	Indirect evidence	Navi Mumbai, IndiaHQ checked Sep 19, 2026	51-200	21 contacts →
	Indirect evidence “SBSEnviro Aqua Concepts Pvt.” Source: RevenueBase Database · checked Sep 19, 2026
24	Enewate Sustainable Wastewater Treatment & Waste To Energy Solutions Sewage Treatment Plant	Partial evidence	Bangalore, IndiaHQ checked Sep 19, 2026	51-200	18 contacts →
	Partial evidence “At Enewate, we empower India's leading real estate developers, industries, and institutions to transform wastewater from a liability into a high performing, sustainable asset.” Source: RevenueBase Database · checked Sep 19, 2026
25	Swem Water Tech India Pvt. LTD	Partial evidence	Jaipur, IndiaHQ checked Sep 19, 2026	51-200	16 contacts →
	Partial evidence “is a leading water and wastewater treatment plant manufacturer and parts supplier, dedicated to providing cutting-edge solutions that address the global challenges of water and…” 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: wastewater energy recovery 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 energy recovery companies.
Partial evidence: Its own public description names part of wastewater energy recovery companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater energy recovery 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 266 wastewater energy recovery companies based in India

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Wastewater energy recovery companies based in India at a glance

As of Sep 19, 2026

5.0%Verified-email coverage

31.0Average contacts per company

11-50Median size (employees)

12.0%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

103

51-200

201-500

1,001-5,000

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 266 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 energy recovery 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 energy recovery 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 energy recovery 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 energy recovery 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, 416 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.

Wastewater energy recovery companies by metro

Wastewater energy recovery companies in Pune32

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 energy recovery 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 energy recovery companies are there based in India?

RevenueBase identified 266 wastewater energy recovery 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 energy recovery companies?

Pune leads with 32 headquartered companies, followed by Mumbai (21) and Ahmedabad (19).

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 416 verified decision-maker contacts tracked across these 266 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.