Company lists · Data refreshed September 2026

Top 23 Hydrogeological consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 600 companies tracked

RevenueBase identified 600 hydrogeological consulting firms headquartered in Australia as of September 2026 and tracks 12,222 professional contacts across them, including 5,612 with verified work emails and 699 with mobile numbers. Perth is the largest hub.

This list covers hydrogeological 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 3, 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 3, 2026 86% judged on-target in blind review

600Companies

12,222Contacts tracked

5,612Verified emails

699Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 23 largest hydrogeological consulting firms based in Australia

Ranked by team size

Top 23 of 600 hydrogeological consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to hydrogeological 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 3, 2026	501-1,000	465 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 3, 2026
2	Construction Sciences	Partial evidence	Albion, AustraliaHQ checked Sep 3, 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 3, 2026
3	PSM	Indirect evidence	North Ryde, AustraliaHQ checked Sep 3, 2026	51-200	222 contacts →
	Indirect evidence “PSM provides specialised design and investigation services for engineering in rock, soil and water.” Source: RevenueBase Database · checked Sep 3, 2026
4	ATC Williams	Partial evidence	Mordialloc, AustraliaHQ checked Sep 3, 2026	201-500	220 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 3, 2026
5	Engeny	Indirect evidence	Brisbane, AustraliaHQ checked Sep 3, 2026	201-500	215 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 3, 2026
6	Senversa	Indirect evidence	Melbourne, AustraliaHQ checked Sep 3, 2026	201-500	181 contacts →
	Indirect evidence “Senversa is an Australian, employee-owned environmental, engineering & sustainability professional services firm, specialising in the provision of environmental approvals, ground…” Source: RevenueBase Database · checked Sep 3, 2026
7	Water Technology PTY LTD	Indirect evidence	Notting Hill, AustraliaHQ checked Sep 3, 2026	51-200	171 contacts →
	Indirect evidence “Since Water Technology has developed a reputation for delivering technically excellent and practically based services to Australia’s water, coastal and environmental sectors.” Source: RevenueBase Database · checked Sep 3, 2026
8	MEC	Partial evidence	Brisbane City, AustraliaHQ checked Sep 3, 2026	51-200	162 contacts →
	Partial evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 3, 2026
9	Alliance Geotechnical	Indirect evidence	Seven Hills, AustraliaHQ checked Sep 3, 2026	51-200	119 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 3, 2026
10	FSG Geotechnics Foundations	Partial evidence	Abbotsford, AustraliaHQ checked Sep 3, 2026	51-200	118 contacts →
	Partial evidence “FSG Geotechnics + Foundations is a leading geotechnical engineering consulting practice which provides specialised geotechnical advice across a range of industry sectors including…” Source: RevenueBase Database · checked Sep 3, 2026
11	Mining ONE Consultants	Indirect evidence	Melbourne, AustraliaHQ checked Sep 3, 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 3, 2026
12	RED Earth Engineering A Geosyntec Company	Indirect evidence	Spring Hill, AustraliaHQ checked Sep 3, 2026	51-200	114 contacts →
	Indirect evidence “Red Earth Engineering (REE) is a specialist consultancy offering services in geotechnical, environmental and civil engineering with specialist application to Tailings Dams and…” Source: RevenueBase Database · checked Sep 3, 2026
13	Macquarie Geotechnical	Indirect evidence	Bathurst, AustraliaHQ checked Sep 3, 2026	51-200	109 contacts →
	Indirect evidence “Macquarie Geotechnical is a leading provider of geotechnical services, supporting the construction, government, mining, renewable energy, groundwater, and environmental sectors.” Source: RevenueBase Database · checked Sep 3, 2026
14	Hunter H2o	Indirect evidence	Mayfield West, AustraliaHQ checked Sep 3, 2026	51-200	95 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 3, 2026
15	EI Australia	Indirect evidence	Pyrmont, AustraliaHQ checked Sep 3, 2026	51-200	93 contacts →
	Indirect evidence “Welcome to EI Australia an Australian-owned, ISO 9001, 14001 & 4801 Certified, professional services company providing Environmental, Geotechnical and Structural engineering…” Source: RevenueBase Database · checked Sep 3, 2026
16	Sequana	Indirect evidence	Melbourne, AustraliaHQ checked Sep 3, 2026	201-500	88 contacts →
	Indirect evidence “Redefining the future of Australia’s major water infrastructure projects, Sequana is one of Australia’s most accomplished independent client-side project and program management…” Source: RevenueBase Database · checked Sep 3, 2026
17	Pinion Advisory	Indirect evidence	Clare, AustraliaHQ checked Sep 3, 2026	51-200	77 contacts →
	Indirect 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 3, 2026
18	Qest Infrastructure PTY LTD	Indirect evidence	North Geelong, AustraliaHQ checked Sep 3, 2026	201-500	77 contacts →
	Indirect evidence “More than just a Hydro company - We've grown.” Source: RevenueBase Database · checked Sep 3, 2026
19	Bligh Tanner	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 3, 2026	51-200	72 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 3, 2026
20	Westera Partners PTY LTD	Partial evidence	Southport, AustraliaHQ checked Sep 3, 2026	51-200	64 contacts →
	Partial evidence “Westera is a highly respected consulting engineering firm practicing Australia wide in the disciplines of civil, structural and environmental engineering” Source: RevenueBase Database · checked Sep 3, 2026
21	JK Group	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 3, 2026	51-200	64 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 3, 2026
22	Ground Science PTY LTD	Indirect evidence	Thomastown, AustraliaHQ checked Sep 3, 2026	51-200	61 contacts →
	Indirect evidence “Ground Science was established in 2003 as a multi-disciplinary engineering company, providing the following services throughout Victoria- Geotechnical Engineering with field and…” Source: RevenueBase Database · checked Sep 3, 2026
23	Triaxial Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 3, 2026	51-200	57 contacts →
	Partial evidence “Established in 2012, Triaxial Consulting are a firm of Consulting Civil and Structural Engineers, who provide a suite of specialist consulting engineering services, to all…” Source: RevenueBase Database · checked Sep 3, 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: hydrogeological 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 hydrogeological consulting firms.
Partial evidence: Its own public description names part of hydrogeological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeological 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 600 hydrogeological consulting firms based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,612 reachable decision-makers.

Free signup · no credit card

View the full list →

Hydrogeological consulting firms based in Australia at a glance

As of Sep 3, 2026

45.9%Verified-email coverage

5.7%Mobile-number coverage

20.4Average contacts per company

1-10Median size (employees)

9.2%Largest-city concentration · Perth

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

368

11-50

165

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

47831–60

3,32161–90

1,79990–180

14180+

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 hydrogeological 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 “hydrogeological 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 hydrogeological 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 hydrogeological 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, 5,612 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 3, 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.

Hydrogeological consulting firms by metro

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 hydrogeological 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 hydrogeological consulting firms are there based in Australia?

RevenueBase identified 600 hydrogeological 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 Rouse Hill, tops this list with the largest team on record.

Which city has the most hydrogeological consulting firms?

Perth leads with 55 headquartered companies, followed by Sydney (44) and Brisbane (35).

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 5,612 verified decision-maker contacts tracked across these 600 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 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 600 hydrogeological consulting firms based in Australia. Start with a free account, no credit card.

Download this list →

Related lists

Hydrogeological consulting firms by geography

Browse the directory

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.