Company lists · Data refreshed September 2026

Top 23 Hydrogeology consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 256 companies tracked

RevenueBase identified 256 hydrogeology consulting firms headquartered in Australia as of September 2026 and tracks 6,941 professional contacts across them, including 2,542 with verified work emails. Perth is the largest hub.

This list covers hydrogeology 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 28, 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 28, 2026 86% judged on-target in blind review

256Companies

6,941Contacts tracked

2,542Verified emails

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The 23 largest hydrogeology consulting firms based in Australia

Ranked by team size

Top 23 of 256 hydrogeology consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeology 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	Douglas Partners	Indirect evidence	West Ryde, AustraliaHQ checked Sep 28, 2026	501-1,000	466 contacts →
	Indirect evidence “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: RevenueBase Database · checked Sep 28, 2026
2	Construction Sciences	Partial evidence	Albion, AustraliaHQ checked Sep 28, 2026	1,001-5,000	423 contacts →
	Partial evidence “Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.” Source: RevenueBase Database · checked Sep 28, 2026
3	PSM	Indirect evidence	North Ryde, AustraliaHQ checked Sep 28, 2026	51-200	223 contacts →
	Indirect evidence “PSM provides specialised design and investigation services for engineering in rock, soil and water.” Source: RevenueBase Database · checked Sep 28, 2026
4	ATC Williams	Partial evidence	Mordialloc, AustraliaHQ checked Sep 28, 2026	201-500	222 contacts →
	Partial 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 28, 2026
5	MEC	Partial evidence	Brisbane City, AustraliaHQ checked Sep 28, 2026	51-200	163 contacts →
	Partial evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 28, 2026
6	RSC	Indirect evidence	Perth, AustraliaHQ checked Sep 28, 2026	51-200	160 contacts →
	Indirect evidence “RSC was established early in 2008 and now operates a global group of companies with subsidiaries in Africa, Asia, Oceania and Europe.” Source: RevenueBase Database · checked Sep 28, 2026
7	Alliance Geotechnical	Indirect evidence	Seven Hills, AustraliaHQ checked Sep 28, 2026	51-200	120 contacts →
	Indirect evidence “Alliance Geotechnical is an established and highly respected Geotechnical and Environmental consultancy firm with a proven track record in delivering and exceeding our client’s…” Source: RevenueBase Database · checked Sep 28, 2026
8	Mining ONE Consultants	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	117 contacts →
	Indirect evidence “Mining One was established in August 2005 to provide technical expertise in the fields of geotechnical engineering, resource geology, mining engineering, processing, numerical…” Source: RevenueBase Database · checked Sep 28, 2026
9	Hunter H2o	Indirect evidence	Mayfield West, AustraliaHQ checked Sep 28, 2026	51-200	93 contacts →
	Indirect 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 28, 2026
10	Bligh Tanner	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect 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 28, 2026
11	Hydrobiology	Partial evidence	Milton, AustraliaHQ checked Sep 28, 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 28, 2026
12	JK Group	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 28, 2026	51-200	65 contacts →
	Indirect evidence “The JK Group is a proudly employee owned and managed company that values professionalism through honesty, dependability and integrity.” Source: RevenueBase Database · checked Sep 28, 2026
13	Environmental Earth Sciences International Eesi	Partial evidence	Chatswood, AustraliaHQ checked Sep 28, 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 28, 2026
14	Australasian Groundwater And Environmental AGE Consultants	Indirect evidence	Bowen Hills, AustraliaHQ checked Sep 28, 2026	11-50	48 contacts →
	Indirect evidence “We are Australia’s specialist groundwater consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
15	WRM Water & Environment PTY LTD	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 28, 2026	11-50	47 contacts →
	Indirect evidence “WRM Water & Environment is a world-class consultancy specialising in flooding, water resource engineering and water management.” Source: RevenueBase Database · checked Sep 28, 2026
16	Butler Partners PTY LTD	Indirect evidence	Albion, AustraliaHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “At Butler Partners, we specialise in providing high quality, practical, face-to-face and cost-effective design advice to our clients.” Source: RevenueBase Database · checked Sep 28, 2026
17	Core Consultants	Indirect evidence	Coolum Beach, AustraliaHQ checked Sep 28, 2026	11-50	42 contacts →
	Indirect evidence “Geotechnical Engineering and Environmental Science” Source: RevenueBase Database · checked Sep 28, 2026
18	Sellick Consultants PTY LTD	Partial evidence	Braddon, AustraliaHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial evidence “Sellick Consultants is an award winning, multi-disciplinary engineering consulting firm offering superior design skills in the fields of structural, civil and hydraulic…” Source: RevenueBase Database · checked Sep 28, 2026
19	EDG Consulting	Partial evidence	Brisbane, AustraliaHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “EDG Consulting is a privately owned Australian company providing design, engineering, advice and geosciences services for a range of market sectors.” Source: RevenueBase Database · checked Sep 28, 2026
20	Bluesphere Environmental	Indirect evidence	Southbank, AustraliaHQ checked Sep 28, 2026	11-50	33 contacts →
	Indirect evidence “BlueSphere Environmental Pty Ltd (BlueSphere) is an Australian, employee owned, specialist environmental consultancy with a strong focus on site contamination management and…” Source: RevenueBase Database · checked Sep 28, 2026
21	CAF Consulting	Partial evidence	Shepparton, AustraliaHQ checked Sep 28, 2026	11-50	32 contacts →
	Partial evidence “At CAF Consulting, we’re proud to be backed by decades of Engineering and Planning experience.” Source: RevenueBase Database · checked Sep 28, 2026
22	Pacific Geotech	Partial evidence	Coomera, AustraliaHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “Pacific Geotech is a geotechnical consulting firm with its head office on the Gold Coast and another in Brisbane.” Source: RevenueBase Database · checked Sep 28, 2026
23	D&n Geotechnical	Indirect evidence	Bruce, AustraliaHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “We are professional geoscientists, environmental scientists, and engineers committed to providing cost-effective solutions for our clients.” 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: hydrogeology 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 hydrogeology consulting firms.
Partial evidence: Its own public description names part of hydrogeology consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeology 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 23 of 256 hydrogeology consulting firms based in Australia

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Hydrogeology consulting firms based in Australia at a glance

As of Sep 28, 2026

36.6%Verified-email coverage

27.1Average contacts per company

1-10Median size (employees)

12.5%Largest-city concentration · Perth

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

155

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 256 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 hydrogeology 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 “hydrogeology 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 hydrogeology 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 hydrogeology 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, 2,542 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.

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 hydrogeology 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 hydrogeology consulting firms are there based in Australia?

RevenueBase identified 256 hydrogeology 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?

Douglas Partners, headquartered in West Ryde, tops this list with the largest team on record.

Which city has the most hydrogeology consulting firms?

Perth leads with 32 headquartered companies, followed by Melbourne (17) and Sydney (17).

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 2,542 verified decision-maker contacts tracked across these 256 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.