Company lists · Data refreshed September 2026

Top 24 Hydrogeology companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 742 companies tracked

RevenueBase identified 742 hydrogeology companies headquartered in Australia as of September 2026 and tracks 12,735 professional contacts across them, including 5,014 with verified work emails. Perth is the largest hub.

This list covers hydrogeology 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 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

742Companies

12,735Contacts tracked

5,014Verified emails

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The 24 largest hydrogeology companies based in Australia

Ranked by team size

Top 24 of 742 hydrogeology companies 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 hydrogeology 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	Douglas Partners	Indirect evidence	West Ryde, AustraliaHQ checked Sep 21, 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 21, 2026
2	Construction Sciences	Indirect evidence	Albion, AustraliaHQ checked Sep 21, 2026	1,001-5,000	423 contacts →
	Indirect evidence “Construction Sciences is a construction materials testing, geotechnical engineering, environmental consulting and specialised testing firm.” Source: RevenueBase Database · checked Sep 21, 2026
3	LUCAS	Indirect evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	201-500	355 contacts →
	Indirect evidence “Welcome to Lucas!” Source: RevenueBase Database · checked Sep 21, 2026
4	Enviropacific	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 21, 2026	201-500	260 contacts →
	Indirect evidence “Enviropacific is committed to working towards creating safer environments and sustainable communities.” Source: RevenueBase Database · checked Sep 21, 2026
5	PSM	Indirect evidence	North Ryde, AustraliaHQ checked Sep 21, 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 21, 2026
6	ATC Williams	Indirect evidence	Mordialloc, AustraliaHQ checked Sep 21, 2026	201-500	222 contacts →
	Indirect 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
7	National Pump & Energy	Indirect evidence	Derrimut, AustraliaHQ checked Sep 21, 2026	201-500	194 contacts →
	Indirect evidence “NPE is a trusted partner to Australia’s leading mining, heavy industry, and oil & gas companies.” Source: RevenueBase Database · checked Sep 21, 2026
8	Geovert	Indirect evidence	Rosebery, AustraliaHQ checked Sep 21, 2026	201-500	192 contacts →
	Indirect evidence “Geovert is a global ground engineering company founded in Christchurch, New Zealand in 2001.” Source: RevenueBase Database · checked Sep 21, 2026
9	Senversa	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
10	MEC	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	51-200	163 contacts →
	Indirect evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 21, 2026
11	RSC	Indirect evidence	Perth, AustraliaHQ checked Sep 21, 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 21, 2026
12	Allied Pumps	Indirect evidence	Canning Vale, AustraliaHQ checked Sep 21, 2026	51-200	142 contacts →
	Indirect evidence “With over 30 years specialising and innovation in purpose-built and complete water package pumping and treatment solutions locally, nationally and internationally, it’s our vision…” Source: RevenueBase Database · checked Sep 21, 2026
13	Guidera O'connor	Indirect evidence	Thebarton, AustraliaHQ checked Sep 21, 2026	51-200	137 contacts →
	Indirect 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 21, 2026
14	Alliance Geotechnical	Indirect evidence	Seven Hills, AustraliaHQ checked Sep 21, 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 21, 2026
15	Mining ONE Consultants	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
16	Macquarie Geotechnical	Indirect evidence	Bathurst, AustraliaHQ checked Sep 21, 2026	51-200	108 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 21, 2026
17	Hunter H2o	Indirect evidence	Mayfield West, AustraliaHQ checked Sep 21, 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 21, 2026
18	EI Australia	Indirect evidence	Pyrmont, AustraliaHQ checked Sep 21, 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 21, 2026
19	Adenco	Indirect evidence	Wangara, AustraliaHQ checked Sep 21, 2026	51-200	93 contacts →
	Indirect evidence “ADENCO is a dynamic company in the Water Management & Civil and Mechanical Engineering Industry.” Source: RevenueBase Database · checked Sep 21, 2026
20	PPS Group	Indirect evidence	Perth, AustraliaHQ checked Sep 21, 2026	201-500	81 contacts →
	Indirect 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 21, 2026
21	Qest Infrastructure PTY LTD	Indirect evidence	North Geelong, AustraliaHQ checked Sep 21, 2026	201-500	78 contacts →
	Indirect evidence “QEST Infrastructure is an Australian civil, geotechnical, environmental, engineering and industrial services provider, delivering complete infrastructure solutions across…” Source: RevenueBase Database · checked Sep 21, 2026
22	Coerco	Indirect evidence	Malaga, AustraliaHQ checked Sep 21, 2026	51-200	72 contacts →
	Indirect evidence “Coerco is an Australian-owned leader in liquid management solutions across agriculture, commercial, and resource sectors.” Source: RevenueBase Database · checked Sep 21, 2026
23	Phibion	Indirect evidence	Lytton, AustraliaHQ checked Sep 21, 2026	51-200	70 contacts →
	Indirect evidence “Phibion leads the way in innovative tailings management with advanced technologies like the MudMaster and Accelerated Mechanical Consolidation (AMC).” Source: RevenueBase Database · checked Sep 21, 2026
24	Hydrobiology	Indirect evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	67 contacts →
	Indirect 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

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 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 hydrogeology companies.
Partial evidence: Its own public description names part of hydrogeology companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrogeology 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 24 of 742 hydrogeology companies based in Australia

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Hydrogeology companies based in Australia at a glance

As of Sep 21, 2026

39.4%Verified-email coverage

17.2Average contacts per company

1-10Median size (employees)

12.8%Largest-city concentration · Perth

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

433

11-50

208

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 742 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 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 “hydrogeology 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 hydrogeology 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 hydrogeology 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, 5,014 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.

Hydrogeology companies 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 hydrogeology 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 hydrogeology companies are there based in Australia?

RevenueBase identified 742 hydrogeology 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?

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

Which city has the most hydrogeology companies?

Perth leads with 95 headquartered companies, followed by Sydney (47) and Brisbane (45).

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 5,014 verified decision-maker contacts tracked across these 742 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.