Company lists · Data refreshed September 2026
Top 25 Municipal water system software companies based in the United States
RevenueBase identified 520 municipal water system software companies headquartered in the United States as of September 2026 and tracks 23,414 professional contacts across them, including 9,616 with verified work emails. Houston is the largest hub.
This list covers municipal water system software companies headquartered in the United States, 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 29, 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.
The 25 largest municipal water system software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,153 contacts → | ||||
Partial evidence “With more than a century of water technology innovation, Badger Meter is a global provider of industry-leading smart water solutions encompassing flow measurement, water quality…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 864 contacts → | ||||
Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 752 contacts → | ||||
Partial evidence “Designing and engineering for the business of water.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 554 contacts → | ||||
Strong evidence “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 317 contacts → | ||||
Strong evidence “Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 300 contacts → | ||||
Strong evidence “Founded in 1866, San Jose Water is an investor owned public utility, and is one of the largest and most technically sophisticated urban water system in the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 265 contacts → | ||||
Strong evidence “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 251 contacts → | ||||
Partial evidence “ProMinent North America is part of the global ProMinent Group, a pioneer in metering technology and water treatment solutions with roots in Heidelberg, Germany.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 207 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 156 contacts → | ||||
Partial evidence “Middlesex Water Company (NASDAQ:MSEX) provides a full range of regulated and non-regulated water, wastewater utility and related services primarily in New Jersey and Delaware.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 154 contacts → | ||||
Partial evidence “City of Austin - Austin Water Utility is an utilities company based out of 625 E 10TH ST, Austin, Texas, United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 153 contacts → | ||||
Strong evidence “The Metropolitan District (MDC) is a non-profit municipal corporation chartered by the Connecticut General Assembly in 1929 to provide potable water and sewerage services on a…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 152 contacts → | ||||
Partial evidence “Aqua-Chem is the leader in providing Global Water Solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 143 contacts → | ||||
Partial evidence “Apex, a trusted leader in water and process management, delivers integrated solutions that empower agricultural, commercial, and industrial customers across the U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 120 contacts → | ||||
Indirect evidence “Avidity Science® supports biomedical research by providing essential solutions and unrivaled service throughout the journey of discovery.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 118 contacts → | ||||
Strong evidence “Master Meter provides water management solutions specializing in precise digital measurement, data delivery, and water preservation software.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 117 contacts → | ||||
Partial evidence “AVANTech, LLC is a comprehensive industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 95 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 94 contacts → | ||||
Partial evidence “Starting in 1975, EMA focused on automation technology for water and wastewater utilities.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 89 contacts → | ||||
Strong evidence “For over 150 years, Mueller Systems has been at the forefront of the water industry, crafting highly practical, esteemed, and user-friendly products.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 87 contacts → | ||||
Strong evidence “USG Water Solutions is the leading water utility services provider specializing in storage tanks, plant rehabilitation, metering, and distribution systems.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 84 contacts → | ||||
Partial evidence “CITCO Water - previously The C.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 82 contacts → | ||||
Partial evidence “cleanwater1 is the leading provider of water quality solutions in the US and the only to offer a complete set of end-to-end water quality and wastewater treatment products and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 80 contacts → | ||||
Partial evidence “Water and Wastewater Equipment Company has been providing efficient, cost-effective and compliant solutions to water and wastewater treatment applications for over 30 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: municipal water system software 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 municipal water system software companies.
- Partial evidence
- Its own public description names part of municipal water system software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name municipal water system software 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 520 municipal water system software companies based in the United States
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Municipal water system software companies based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 520 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 municipal water system software 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 the United States whose own description of what they do matches “municipal water system software 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 municipal water system software 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 municipal water system software companies, and records with no verified work email. Companies headquartered outside United States 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, 9,616 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 29, 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.
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 municipal water system software 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 municipal water system software companies are there based in the United States?
RevenueBase identified 520 municipal water system software companies headquartered in the United States 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?
XYLEM, headquartered in Washington, tops this list with the largest team on record.
Which city has the most municipal water system software companies?
Houston leads with 9 headquartered companies, followed by Phoenix (6) and Austin (5).
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 9,616 verified decision-maker contacts tracked across these 520 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 29, 2026.
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Municipal water system software companies by geography
- Municipal water system software companies based in Australia
- Municipal water system software companies based in Brazil
- Municipal water system software companies based in Canada
- Municipal water system software companies based in France
- Municipal water system software companies based in Germany
- Municipal water system software companies based in India
- Municipal water system software companies based in Italy
- Municipal water system software companies based in Mexico
- Municipal water system software companies based in the Netherlands
- Municipal water system software companies based in the Philippines
- Municipal water system software companies based in Poland
- Municipal water system software companies based in Portugal
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.
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