Company lists · Data refreshed September 2026

Top 25 Industrial water systems integrators worldwide

Name: Industrial water systems integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 14,340 companies tracked

RevenueBase identified 14,340 industrial water systems integrators worldwide as of September 2026 and tracks 256,295 professional contacts across them, including 70,495 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers industrial water systems integrators 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 28, 2026. Country and city lists for industrial water systems integrators 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 28, 2026 86% judged on-target in blind review

14,340Companies

256,295Contacts tracked

70,495Verified emails

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The 25 largest industrial water systems integrators worldwide

Ranked by team size

Top 25 of 14,340 industrial water systems integrators worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to industrial water systems integrators: 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	Nalco Water, An Ecolab Company	Strong evidence	Naperville, IL, United StatesHQ checked Sep 28, 2026	10001+	11,500 contacts →
	Strong evidence “A global leader in water and process management solutions, Nalco Water, an Ecolab company, works with customers across a wide range of industries to help meet their specific…” Source: RevenueBase Database · checked Sep 28, 2026
2	XYLEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	10001+	9,320 contacts →
	Partial evidence “Xylem is the global leader in advanced technologies, solutions and services that address the world’s biggest water challenges.” Source: RevenueBase Database · checked Sep 28, 2026
3	Pentair	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	5,001-10,000	6,636 contacts →
	Partial evidence “At Pentair, we help the world sustainably move, improve, and enjoy water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 28, 2026
4	ION Exchange India LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 28, 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 28, 2026
5	ATS Corporation	Indirect evidence	Cambridge, ON, CanadaHQ checked Sep 28, 2026	5,001-10,000	2,754 contacts →
	Indirect evidence “HELPING ADVANCE THE FUTURE ATS Corporation is an industry-leading automation solutions provider to many of the world's most successful companies.” Source: RevenueBase Database · checked Sep 28, 2026
6	Watts Water Technologies	Strong evidence	North Andover, MA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,503 contacts →
	Strong evidence “We are a global leader of quality water solutions for residential, industrial, municipal, and commercial settings.” Source: RevenueBase Database · checked Sep 28, 2026
7	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 28, 2026	1,001-5,000	2,375 contacts →
	Partial evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 28, 2026
8	NCH	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	10001+	2,361 contacts →
	Partial evidence “Cleaning water, conserving energy and delivering maintenance solutions since 1919.” Source: RevenueBase Database · checked Sep 28, 2026
9	Franklin Electric	Partial evidence	Fort Wayne, IN, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,949 contacts →
	Partial evidence “Founded in 1944, Franklin Electric has grown from a small motor manufacturing company into a global leader in the manufacturing and distribution of systems, focused on the…” Source: RevenueBase Database · checked Sep 28, 2026
10	Praj Industries	Partial evidence	Pune, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,786 contacts →
	Partial evidence “Praj is a leading process solutions company with expertise in integrated offerings for bio-energy, high purity water solutions and engineering led businesses namely zero liquid…” Source: RevenueBase Database · checked Sep 28, 2026
11	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,718 contacts →
	Partial evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 28, 2026
12	Select Water Solutions	Strong evidence	Gainesville, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,605 contacts →
	Strong evidence “Select is a leader in water management and chemical technology to our customers in the oil and gas industry, as well as in other industrial applications.” Source: RevenueBase Database · checked Sep 28, 2026
13	MPW Industrial Services	Strong evidence	Hebron, OH, PalestineHQ checked Sep 28, 2026	1,001-5,000	1,485 contacts →
	Strong evidence “As the leading provider of integrated, technology-based industrial cleaning, water purification, facility management, and total waste services in North America, MPW assists in…” Source: RevenueBase Database · checked Sep 28, 2026
14	Chemtreat	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,404 contacts →
	Partial evidence “At ChemTreat, we understand that water is a vital resource for our planet.” Source: RevenueBase Database · checked Sep 28, 2026
15	Kurita Group	Strong evidence	Tokyo, JapanHQ checked Sep 28, 2026	5,001-10,000	1,360 contacts →
	Strong evidence “For more than 70 years, since its founding in 1949, Kurita Water Industries has been consistently operating in two areas of "water and the environment." Kurita Group provides…” Source: RevenueBase Database · checked Sep 28, 2026
16	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 28, 2026	n/a	1,196 contacts →
	Strong 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 28, 2026
17	Rovisys	Strong evidence	Aurora, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,159 contacts →
	Strong evidence “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Source: RevenueBase Database · checked Sep 28, 2026
18	Aquatech	Partial evidence	Canonsburg, PA, United StatesHQ checked Sep 28, 2026	501-1,000	903 contacts →
	Partial evidence “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Source: RevenueBase Database · checked Sep 28, 2026
19	MWH Treatment	Partial evidence	Stockport, United KingdomHQ checked Sep 28, 2026	1,001-5,000	879 contacts →
	Partial evidence “MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.” Source: RevenueBase Database · checked Sep 28, 2026
20	Chem-Aqua, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	10001+	864 contacts →
	Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 28, 2026
21	Prime Controls	Partial evidence	Lewisville, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	857 contacts →
	Partial evidence “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Source: RevenueBase Database · checked Sep 28, 2026
22	OVIVO	Partial evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	501-1,000	829 contacts →
	Partial evidence “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Source: RevenueBase Database · checked Sep 28, 2026
23	Gradiant	Partial evidence	Woburn, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	813 contacts →
	Partial evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 28, 2026
24	Trojan Technologies	Partial evidence	London, ON, CanadaHQ checked Sep 28, 2026	501-1,000	716 contacts →
	Partial evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 28, 2026
25	Grupo Bauminas	Indirect evidence	Cataguazes, BrazilHQ checked Sep 28, 2026	1,001-5,000	650 contacts →
	Indirect evidence “Sobre a BAUMINAS Fundada há mais de 60 anos, a BAUMINAS é uma empresa orgulhosamente nacional, com ampla experiência na fabricação de produtos para o tratamento de águas e tem…” Source: RevenueBase Database · checked Sep 28, 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: industrial water systems integrators. 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 industrial water systems integrators.
Partial evidence: Its own public description names part of industrial water systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial water systems integrators. 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 14,340 industrial water systems integrators worldwide

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Industrial water systems integrators worldwide at a glance

As of Sep 28, 2026

27.5%Verified-email coverage

17.9Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Pune

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

5,573

11-50

5,657

51-200

2,136

201-500

561

501-1,000

160

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 industrial water systems integrators, 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 industrial water systems integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “industrial water systems integrators”. 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 industrial water systems integrators), 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 industrial water systems integrators, 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, 70,495 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 28, 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.

Industrial water systems integrators by location

60 lists · largest first

Every Industrial water systems integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 industrial water systems integrators, 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 industrial water systems integrators are there worldwide?

RevenueBase identified 14,340 industrial water systems integrators 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?

Nalco Water, An Ecolab Company, headquartered in Naperville, tops this list with the largest team on record.

Which country has the most industrial water systems integrators?

The United States leads with 2,534 companies, followed by India (1,659) and Italy (708). Every industrial water systems integrators list by country and city is linked on this page.

Which city has the most industrial water systems integrators?

Pune leads with 162 headquartered companies, followed by Ahmedabad (125) and Chennai (117).

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 70,495 verified decision-maker contacts tracked across these 14,340 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 28, 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.