Company lists · Data refreshed November 2026

Top 25 Water audit firms worldwide

RevenueBase identified 182 company matches for water audit firms worldwide as of November 2026 and tracks 1,710 professional contacts across them, including 345 with verified work emails. The United States is the largest market and Bristol the largest hub.

This list covers company matches for water audit firms worldwide, 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. Country and city lists for water audit firms follow the table.

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
182Companies
1,710Contacts tracked
345Verified emails
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The 25 largest water audit firms worldwide

Ranked by team size
Top 25 of 182 company matches for water audit firms worldwide, 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 matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBristol, United KingdomHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“water2business is a leading retailer of water and waste water management solutions to businesses and organisations across England and Scotland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchProvidencia, ChileHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“The administration and management of water is a fundamental factor for the development of countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchGroenkloof, South AfricaHQ recorded Nov 6, 202611-5045 contacts →

Exact match

“WRP is a proudly level 2 BB-BEE specialist engineering consultancy founded and cultivated in South Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Water Management, Inc.(WMI) is well established in the field of water efficiency and conservation and has developed a successful track record since its founding in 1980.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGolden, CO, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“PG Environmental (PG) is an environmental consulting firm offering specialized technical expertise to federal and state agencies tasked with protecting and restoring our nation’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchEnnis, IrelandHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“SES Water Management provides decisive solutions to the sustainability challenges faced by modern businesses in the retail, industrial, construction and tourism sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchYate, United KingdomHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“At Artesia, our mission is to make the water sector more progressive, inclusive, and resilient.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMelbourne, AustraliaHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“The problems we solve: Industrial water challenges rarely arrive on schedule.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261-1022 contacts →

Exact match

“A ECCOFLUXO tem como foco a Eficiência Energética.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHouse, AustraliaHQ recorded Nov 6, 2026501-1,00021 contacts →

Exact match

“The AWQC provides a comprehensive range of water and wastewater services including sampling, analysis, advice and research.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchPretoria, South AfricaHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“AQUAffection is a company based out of Scientia Technopark, Pretoria, Gauteng, South Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPune, IndiaHQ recorded Nov 6, 202651-20018 contacts →

Exact match

“At PTC WaterTech LLP, we offer a comprehensive range of services in water and wastewater management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPymblesydney, AustraliaHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Founded in 2006, WaterGroup is one of Australia's largest integrated water and network efficiency companies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchGambrills, CA, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“Water Savers provides comprehensive services from Audit & Design through installation and measurement & verification of savings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Why Save Water?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMilton, ON, CanadaHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“We are a Canadian based water conservation consulting firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDurban, South AfricaHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“At UWS, we believe water analysis is more than a technical requirement.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchWhittington, United KingdomHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Water consumption reduction experts – auditing, installing, monitoring, advising, designing and manufacturing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAhmedabad, IndiaHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Water is our World.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLeeds, United KingdomHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Welcome to Smarta Water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLubbock, TX, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“Oller Engineering, Inc, was originally formed in 1989 in Lubbock, Texas to serve the municipal clients in west Texas and the Panhandle.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRound Rock, TX, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Providing access to safe water means there is absolutely no room for error.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBorlänge, SwedenHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Midvatten är ett tjänsteföretag specialiserat på grundvatten - dess förekomst, rörelse och kvalité.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchVancouver, BC, CanadaHQ recorded Nov 6, 20261-109 contacts →

Exact match

“Swiftwater provides the water management expertise that our clients need to better understand their unique water challenges.”

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

Showing 25 of 182 water audit firms worldwide

See the full list, filter by size, metro and specialty, and access 345 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Water audit firms worldwide at a glance

As of Nov 6, 2026
20.2%Verified-email coverage
9.4Average contacts per company
1-10Median size (employees)
2.2%Largest-city concentration · Bristol
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
105
11-50
59
51-200
14
201-500
1
501-1,000
2

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for water audit firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “water audit firms” 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. 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 345 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.

Water audit firms by location

1 lists · largest first

Every Water audit firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 audit firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water audit firms are there worldwide?

RevenueBase identified 182 company matches for water audit firms worldwide 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?

Larry Walker Associates tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most water audit firms?

The United States leads with 51 companies. Every water audit firms list by country and city is linked on this page.

Which city has the most water audit firms?

Bristol leads with 4 company records, followed by Florianopolis (3) and Santiago (3).

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 345 professional contacts with verified work emails tracked across these 182 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.