Company lists · Data refreshed September 2026

Top 25 Water resource management companies based in Australia

Name: Water resource management companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 175 companies tracked

RevenueBase identified 175 water resource management companies headquartered in Australia as of September 2026 and tracks 15,405 professional contacts across them, including 7,930 with verified work emails. Melbourne is the largest hub.

This list covers water resource management companies headquartered in Australia, 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 22, 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 22, 2026 86% judged on-target in blind review

175Companies

15,405Contacts tracked

7,930Verified emails

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The 25 largest water resource management companies based in Australia

Ranked by team size

Top 25 of 175 water resource management companies based in Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water resource management 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	Water Corporation	Partial evidence	Leederville, AustraliaHQ checked Sep 22, 2026	1,001-5,000	3,828 contacts →
	Partial evidence “We’re the principal supplier of water, wastewater and drainage services in Western Australia to hundreds of thousands of homes, businesses and farms, as well as providing bulk…” Source: RevenueBase Database · checked Sep 22, 2026
2	Sydney Water	Partial evidence	Parramatta, AustraliaHQ checked Sep 22, 2026	1,001-5,000	3,609 contacts →
	Partial evidence “We deliver essential and sustainable water services for the benefit of the community.” Source: RevenueBase Database · checked Sep 22, 2026
3	Melbourne Water	Partial evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,434 contacts →
	Partial evidence “In Melbourne, water is essential to our way of life.” Source: RevenueBase Database · checked Sep 22, 2026
4	Urban Utilities	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,064 contacts →
	Partial evidence “We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.” Source: RevenueBase Database · checked Sep 22, 2026
5	Waternsw	Strong evidence	Sydney, AustraliaHQ checked Sep 22, 2026	501-1,000	827 contacts →
	Strong evidence “At WaterNSW we are custodians of the state’s water, a vital natural resource.” Source: RevenueBase Database · checked Sep 22, 2026
6	Sunwater	Strong evidence	Fortitude Valley, AustraliaHQ checked Sep 22, 2026	501-1,000	649 contacts →
	Strong evidence “Sunwater is a water solutions and service provider delivering the most essential of resources in regional communities.” Source: RevenueBase Database · checked Sep 22, 2026
7	Hunter Water	Partial evidence	Newcastle, AustraliaHQ checked Sep 22, 2026	501-1,000	423 contacts →
	Partial evidence “Hunter Water is proud of the significant contribution we make to the health, wellbeing and prosperity of our region – creating a sustainable water future for all.” Source: RevenueBase Database · checked Sep 22, 2026
8	Gippsland Water	Partial evidence	Traralgon, AustraliaHQ checked Sep 22, 2026	201-500	265 contacts →
	Partial evidence “We provide water and sewerage services to around people in Gippsland.” Source: RevenueBase Database · checked Sep 22, 2026
9	Hydrochem	Partial evidence	Braeside, AustraliaHQ checked Sep 22, 2026	201-500	255 contacts →
	Partial evidence “HydroChem is one of Australia’s leading companies providing high quality water treatment services.” Source: RevenueBase Database · checked Sep 22, 2026
10	Coliban Water	Partial evidence	Bendigo, AustraliaHQ checked Sep 22, 2026	51-200	247 contacts →
	Partial evidence “Coliban Water was established on July 1, 1992 under the Water Act 1989 as a Regional Urban Water Authority.” Source: RevenueBase Database · checked Sep 22, 2026
11	Trility	Partial evidence	Adelaide, AustraliaHQ checked Sep 22, 2026	201-500	217 contacts →
	Partial evidence “Company Overview: TRILITY is an established industry leader, dedicated in the delivery of water, wastewater, reuse and bio-solids solutions across Australia and New Zealand’s…” Source: RevenueBase Database · checked Sep 22, 2026
12	Wannon Water	Partial evidence	Warrnambool, AustraliaHQ checked Sep 22, 2026	201-500	187 contacts →
	Partial evidence “A healthy region enabled by water Our vision is for a region where people can live well, communities are supported, and economies thrive, with water playing a vital role in…” Source: RevenueBase Database · checked Sep 22, 2026
13	Guidera O'connor	Partial evidence	Thebarton, AustraliaHQ checked Sep 22, 2026	51-200	137 contacts →
	Partial evidence “Guidera O'Connor (GO) is an Australian privately owned company operating only within the Water Industry and specialising in the delivery of water/wastewater treatment and pumping…” Source: RevenueBase Database · checked Sep 22, 2026
14	Grampians Wimmera Mallee Water	Partial evidence	Horsham, AustraliaHQ checked Sep 22, 2026	51-200	122 contacts →
	Partial evidence “Grampians Wimmera Mallee Water (GWMWater) is an innovative and exciting employer that is committed to contributing to the sustainable growth of communities within our region.” Source: RevenueBase Database · checked Sep 22, 2026
15	Hunter H2o	Partial evidence	Mayfield West, AustraliaHQ checked Sep 22, 2026	51-200	93 contacts →
	Partial evidence “Beca HunterH2O is a diverse, empowered, and trusted team of 300+ water specialists, passionate about healthy and sustainable communities wherever we work.” Source: RevenueBase Database · checked Sep 22, 2026
16	Culligan Australia	Partial evidence	Seven Hills, AustraliaHQ checked Sep 22, 2026	201-500	84 contacts →
	Partial evidence “Discover premium drinking water solutions with Culligan – delivering quality products and services for businesses across Australia.” Source: RevenueBase Database · checked Sep 22, 2026
17	PPS Group	Strong evidence	Perth, AustraliaHQ checked Sep 22, 2026	201-500	81 contacts →
	Strong evidence “PPS Water Group is a proudly Australian company delivering turnkey water infrastructure solutions to the resource sector and beyond.” Source: RevenueBase Database · checked Sep 22, 2026
18	Eire Constructions	Partial evidence	Sancrox 2446, AustraliaHQ checked Sep 22, 2026	51-200	79 contacts →
	Partial evidence “Founded in 1978, we are water specialists, delivering our expertise into complex projects for the markets of water treatment and water network infrastructure, as well as transport…” Source: RevenueBase Database · checked Sep 22, 2026
19	Coerco	Strong evidence	Malaga, AustraliaHQ checked Sep 22, 2026	51-200	72 contacts →
	Strong evidence “Coerco is an Australian-owned leader in liquid management solutions across agriculture, commercial, and resource sectors.” Source: RevenueBase Database · checked Sep 22, 2026
20	Clearwater	Partial evidence	Docklands, AustraliaHQ checked Sep 22, 2026	n/a	70 contacts →
	Partial evidence “Clearwater works with the Victorian water industry to transform the way we manage water to encourage resilient, healthy, and connected communities.” Source: RevenueBase Database · checked Sep 22, 2026
21	MAK Water	Partial evidence	Malaga, AustraliaHQ checked Sep 22, 2026	51-200	69 contacts →
	Partial evidence “At MAK Water, we help clients achieve reliable, cost-effective and sustainable water, wastewater and sewage treatment solutions.” Source: RevenueBase Database · checked Sep 22, 2026
22	Western Water	Partial evidence	Sunbury, AustraliaHQ checked Sep 22, 2026	51-200	66 contacts →
	Partial evidence “Western Water is a regional urban water corporation in Victoria, Australia.” Source: RevenueBase Database · checked Sep 22, 2026
23	Atlas Engineering Group	Partial evidence	North Sydney, AustraliaHQ checked Sep 22, 2026	51-200	51 contacts →
	Partial evidence “Atlas, now part of the Sequana Group, has been specialising in brownfield water & wastewater programs and projects from day one.” Source: RevenueBase Database · checked Sep 22, 2026
24	Mitchell Water Australia	Partial evidence	Docklands, AustraliaHQ checked Sep 22, 2026	51-200	44 contacts →
	Partial evidence “Mitchell Water Australia is a privately owned and operated, dedicated water and energy infrastructure construction company.” Source: RevenueBase Database · checked Sep 22, 2026
25	H2flow Hire	Partial evidence	Beenleigh, AustraliaHQ checked Sep 22, 2026	11-50	26 contacts →
	Partial evidence “H2flow Hire is South East Queensland's leading water services business, providing innovative water solutions to our clients since 2001.” Source: RevenueBase Database · checked Sep 22, 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: water resource management 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 water resource management companies.
Partial evidence: Its own public description names part of water resource management companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water resource management 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 175 water resource management companies based in Australia

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Water resource management companies based in Australia at a glance

As of Sep 22, 2026

51.5%Verified-email coverage

88.0Average contacts per company

11-50Median size (employees)

6.9%Largest-city concentration · Melbourne

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 175 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 water resource management 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 Australia whose own description of what they do matches “water resource management 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 water resource management 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 water resource management companies, and records with no verified work email. Companies headquartered outside Australia 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, 7,930 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 22, 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 water resource management 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 water resource management companies are there based in Australia?

RevenueBase identified 175 water resource management companies headquartered in Australia 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?

Water Corporation, headquartered in Leederville, tops this list with the largest team on record.

Which city has the most water resource management companies?

Melbourne leads with 12 headquartered companies, followed by Adelaide (10) and Perth (10).

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 7,930 verified decision-maker contacts tracked across these 175 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 22, 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.