Company lists · Data refreshed November 2026

Top 25 Water sanitation organizations based in India

RevenueBase identified 742 company matches for water sanitation organizations associated with India as of November 2026 and tracks 11,746 professional contacts across them, including 976 with verified work emails. New Delhi is the largest hub.

This list covers company matches for water sanitation organizations 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 November 6, 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 Nov 6, 2026 How this list was built
742Companies
11,746Contacts tracked
976Verified emails
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The 25 largest water sanitation organizations based in India

Ranked by team size
Top 25 of 742 company matches for water sanitation organizations based in India, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKolkata, IndiaHQ recorded Nov 6, 20265,001-10,000435 contacts →

Exact match

“At Ion Exchange, we bring you total environment solutions - water treatment, waste water treatment & recycle, zero liquid discharge.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchChennai, IndiaHQ recorded Nov 6, 20265,001-10,000328 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNew Delhi, IndiaHQ recorded Nov 6, 202610001+293 contacts →

Exact match

“Sulabh International Social Service Organisation, a non-profit voluntary social organisation founded in 1970 by Dr.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026n/a226 contacts →

Exact match

“HMWSSB Service Provider of construction services, design services & management of water supply system services in Hyderabad, Telangana.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPune, IndiaHQ recorded Nov 6, 2026201-500193 contacts →

Exact match

“HNB ENGINEERS PVT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026501-1,000189 contacts →

Exact match

“Water is life.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026201-500189 contacts →

Exact match

“We are committed to people and committed to society”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchNew Delhi, IndiaHQ recorded Nov 6, 2026201-500184 contacts →

Exact match

“Water, Sanitation and Hygiene Institute (WASH Institute) is a registered NGO established in 2008 in Kodaikanal, Tamil Nadu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchRajarhat, IndiaHQ recorded Nov 6, 202651-200156 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 · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026201-500134 contacts →

Exact match

“Euroteck Environmental Pvt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNagpur, IndiaHQ recorded Nov 6, 20261,001-5,000121 contacts →

Exact match

“Dedicated to Ensuring Clean and Accessible Water for the city of Nagpur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHyderabad, IndiaHQ recorded Nov 6, 2026501-1,000111 contacts →

Exact match

“Our Vision is to Impact lives by ensuring availability by sustainable management of water and sanitation for all".”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchChennai, IndiaHQ recorded Nov 6, 202611-50109 contacts →

Exact match

“We are India’s leading in-depth knowledge providers related to water and waste water industry and create awareness about effective water management systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchBangalore, IndiaHQ recorded Nov 6, 202651-20099 contacts →

Exact match

“Our Mission: CDD India is a not-for-profit organization, registered in 2005, that innovates, demonstrates and disseminates decentralized nature-based solutions for the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBangalore, IndiaHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“At Reap Benefit, we strive to tackle and solve local environmental and civic problems concerning waste, water, energy, and sanitation, through low cost solutions, which are user…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchKozhikode, IndiaHQ recorded Nov 6, 2026n/a92 contacts →

Exact match

“Cwrdm Campus Centre For Water Resources Development is a retail company based out of Kunnamangalam, Kozhikode, Kerala, India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMumbai, IndiaHQ recorded Nov 6, 2026201-50087 contacts →

Exact match

“Paani Foundation was set up in 2016 by the core team of the ‘Satyamev Jayate’ TV show, with the mission of making rural Maharashtra drought-free and prosperous.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHyderabad, IndiaHQ recorded Nov 6, 202651-20080 contacts →

Exact match

“Naandi Water is a new generation community social enterprise with a mission to save lives by providing safe drinking water to the underserved in a sustainable way.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKalamassery, IndiaHQ recorded Nov 6, 2026201-50072 contacts →

Exact match

“GME is an approved 'A Class' consultant of Kerala State Pollution Control Board.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGurgaon, IndiaHQ recorded Nov 6, 2026501-1,00070 contacts →

Exact match

“Total Water Management - Operations Services Wapp offers total water management and operations to hotels, hospitals, retail, commercial buildings, IT parks, malls, warehouses…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchNew Delhi, IndiaHQ recorded Nov 6, 2026n/a70 contacts →

Exact match

“Earth Water Group has been formed to address key issues facing the world today - Infrastructure Development, Quality of Water, Water Conservation & Environment Protection.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSas Nagar, IndiaHQ recorded Nov 6, 2026201-50068 contacts →

Exact match

“Hydrotech Paryavaran (India) Pvt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchThiruvananthapuram, IndiaHQ recorded Nov 6, 202651-20067 contacts →

Exact match

“Eram Scientific Solutions is a R&D Social enterprise operating primarily in the water and sanitation sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPune, IndiaHQ recorded Nov 6, 202651-20066 contacts →

Exact match

“We are a growing family of 120, endeavouring excellence with care and growth since 1989.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchChennai, IndiaHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“CLAR AQUA PVT LTD, an ISO 9001 : 2015 certified, has an unsurpassed record for providing high quality solutions in all water and waste water treatment projects starting from…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 742 water sanitation organizations based in India

See the full list, filter by size, metro and specialty, and access 976 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water sanitation organizations based in India at a glance

As of Nov 6, 2026
8.3%Verified-email coverage
15.8Average contacts per company
11-50Median size (employees)
8.2%Largest-city concentration · New Delhi
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
228
11-50
259
51-200
170
201-500
48
501-1,000
14
1,001-5,000
7
5,001-10,000
5
10001+
4

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 742 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 “water sanitation organizations” 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 976 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 November 6, 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.

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 “water sanitation organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water sanitation organizations are there based in India?

RevenueBase identified 742 company matches for water sanitation organizations associated with India as of November 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 water sanitation organizations?

New Delhi leads with 61 company records, followed by Bangalore (58) and Pune (55).

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 976 professional contacts with verified work emails tracked across these 742 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 November 6, 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.