Company lists · Data refreshed September 2026

Top 25 Water resources consulting firms based in Australia

Name: Water resources consulting firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 285 companies tracked

RevenueBase identified 285 water resources consulting firms headquartered in Australia as of September 2026 and tracks 4,271 professional contacts across them, including 2,442 with verified work emails. Sydney is the largest hub.

This list covers water resources consulting firms 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 21, 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 21, 2026 86% judged on-target in blind review

285Companies

4,271Contacts tracked

2,442Verified emails

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The 25 largest water resources consulting firms based in Australia

Ranked by team size

Top 25 of 285 water resources consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to water resources consulting firms: 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	Entura	Strong evidence	Hobart, AustraliaHQ checked Sep 21, 2026	201-500	271 contacts →
	Strong evidence “Entura is one of the world’s most experienced specialist power and water consulting firms.” Source: RevenueBase Database · checked Sep 21, 2026
2	Tonkin	Indirect evidence	Adelaide, AustraliaHQ checked Sep 21, 2026	201-500	237 contacts →
	Indirect evidence “Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.” Source: RevenueBase Database · checked Sep 21, 2026
3	ATC Williams	Strong evidence	Mordialloc, AustraliaHQ checked Sep 21, 2026	201-500	222 contacts →
	Strong evidence “ATC Williams is a consulting engineering company specialising in providing custom solutions for tailings, water, waste, and resource recovery projects.” Source: RevenueBase Database · checked Sep 21, 2026
4	Engeny	Indirect evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	201-500	216 contacts →
	Indirect evidence “Now a part of the Egis Group, Engeny provides a wide range of specialist engineering and environmental consultancy services across disciplines.” Source: RevenueBase Database · checked Sep 21, 2026
5	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 21, 2026
6	Premise	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	51-200	151 contacts →
	Indirect evidence “Premise is now part of Amey and operates as Amey Australia.” Source: RevenueBase Database · checked Sep 21, 2026
7	Earth Systems	Indirect evidence	Port Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	101 contacts →
	Indirect evidence “At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.” Source: RevenueBase Database · checked Sep 21, 2026
8	CMP Consulting Group	Strong evidence	Mulgrave, AustraliaHQ checked Sep 21, 2026	51-200	94 contacts →
	Strong evidence “CMP Consulting Group is a multi-disciplinary Engineering firm specialising in design, project management and construction phase services for the Water Industry.” Source: RevenueBase Database · checked Sep 21, 2026
9	Hunter H2o	Partial evidence	Mayfield West, AustraliaHQ checked Sep 21, 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 21, 2026
10	Sequana	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	89 contacts →
	Partial evidence “Sequana is a client-side project management consultancy that aims to provide exceptional advice, leadership and management services to the water and environment industry.” Source: RevenueBase Database · checked Sep 21, 2026
11	RMCG	Indirect evidence	Bendigo, AustraliaHQ checked Sep 21, 2026	51-200	76 contacts →
	Indirect evidence “Bringing clarity to complexity.” Source: RevenueBase Database · checked Sep 21, 2026
12	Pinion Advisory	Partial evidence	Clare, AustraliaHQ checked Sep 21, 2026	51-200	70 contacts →
	Partial evidence “As an Australian-owned consultancy company specialising in agribusiness, water and environment, Pinion Advisory unlocks the potential in our people, our clients and our natural…” Source: RevenueBase Database · checked Sep 21, 2026
13	Bligh Tanner	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 21, 2026	51-200	69 contacts →
	Partial evidence “With offices in Brisbane and Sydney, Bligh Tanner is a structural, façade, civil, environmental and water engineering consultancy distinguished by its high level of expertise…” Source: RevenueBase Database · checked Sep 21, 2026
14	Hydrobiology	Partial evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	67 contacts →
	Partial evidence “Hydrobiology is an Environmental Consulting Company offering integrated services in the physical, biological and chemical processes of environmental systems with a particular…” Source: RevenueBase Database · checked Sep 21, 2026
15	Environmental Earth Sciences International Eesi	Partial evidence	Chatswood, AustraliaHQ checked Sep 21, 2026	51-200	49 contacts →
	Partial evidence “EESI Group, a leader in brown environment consulting, serves the mining, waste & landfill, urban development, and farming sectors across Australia and the UK.” Source: RevenueBase Database · checked Sep 21, 2026
16	Australasian Groundwater And Environmental AGE Consultants	Indirect evidence	Bowen Hills, AustraliaHQ checked Sep 21, 2026	11-50	48 contacts →
	Indirect evidence “We are Australia’s specialist groundwater consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
17	WRM Water & Environment PTY LTD	Strong evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	11-50	47 contacts →
	Strong evidence “WRM Water & Environment is a world-class consultancy specialising in flooding, water resource engineering and water management.” Source: RevenueBase Database · checked Sep 21, 2026
18	CDM Smith Australia	Partial evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	51-200	47 contacts →
	Partial evidence “CDM Smith Australia provides meaningful and productive partnerships with our clients to solve complex water and environmental challenges.” Source: RevenueBase Database · checked Sep 21, 2026
19	WMS	Partial evidence	Bowen Hills, AustraliaHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial evidence “Founded in 2012, WMS (formerly Water Modelling Solutions) has steadily built a reputation for delivering outcomes on time and on budget while maintaining a high standard of work.” Source: RevenueBase Database · checked Sep 21, 2026
20	Martens & Associates PTY LTD	Indirect evidence	Hornsby, AustraliaHQ checked Sep 21, 2026	11-50	47 contacts →
	Indirect evidence “WHO WE ARE Established in 1990 by Dr Daniel Martens, who continues to oversee major technical projects, Martens remains privately owned by our people and delivers project services…” Source: RevenueBase Database · checked Sep 21, 2026
21	MBS Environmental	Indirect evidence	West Perth, AustraliaHQ checked Sep 21, 2026	11-50	44 contacts →
	Indirect evidence “MBS Environmental (formerly Martinick McNulty Pty Ltd) was established in 1978 and is based in Perth, Western Australia.” Source: RevenueBase Database · checked Sep 21, 2026
22	Resource Strategies PTY LTD	Partial evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	43 contacts →
	Partial evidence “Resource Strategies undertakes challenging resource-based commissions in a variety of regions and planning jurisdictions.” Source: RevenueBase Database · checked Sep 21, 2026
23	Wsce Warren Smith Consulting Engineers	Strong evidence	Sydney, AustraliaHQ checked Sep 21, 2026	51-200	40 contacts →
	Strong evidence “WSce is a multi-discipline Australian-owned consulting engineering firm specialising in civil, water, hydraulic, fire services (wet & dry fire) and specialty water and wasterwater…” Source: RevenueBase Database · checked Sep 21, 2026
24	Phronis Consulting	Partial evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	36 contacts →
	Partial evidence “Phronis Consulting exists to inspire the delivery of world changing infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026
25	Wolfpeak	Strong evidence	Port Macquarie, AustraliaHQ checked Sep 21, 2026	11-50	36 contacts →
	Strong evidence “We offer specialist consulting and project services, solving complex strategic and systematic issues across the environmental, natural resource, planning, sustainability, policy…” Source: RevenueBase Database · checked Sep 21, 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 resources consulting firms. 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 resources consulting firms.
Partial evidence: Its own public description names part of water resources consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water resources consulting firms. 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 285 water resources consulting firms based in Australia

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Water resources consulting firms based in Australia at a glance

As of Sep 21, 2026

57.2%Verified-email coverage

15.0Average contacts per company

1-10Median size (employees)

12.6%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

182

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 285 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 resources consulting firms, 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 resources consulting firms”. 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 resources consulting firms), 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 resources consulting firms, 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, 2,442 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 21, 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.

Water resources consulting firms by metro

Water resources consulting firms in Sydney36

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 resources consulting firms, 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 resources consulting firms are there based in Australia?

RevenueBase identified 285 water resources consulting firms 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?

Entura, headquartered in Hobart, tops this list with the largest team on record.

Which city has the most water resources consulting firms?

Sydney leads with 36 headquartered companies, followed by Melbourne (19) and Brisbane (15).

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 2,442 verified decision-maker contacts tracked across these 285 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 21, 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.