Company lists · Data refreshed September 2026

Top 25 Hydrology consultants based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 490 companies tracked

RevenueBase identified 490 hydrology consultants headquartered in Australia as of September 2026 and tracks 9,477 professional contacts across them, including 3,375 with verified work emails. Sydney is the largest hub.

This list covers hydrology consultants 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

490Companies

9,477Contacts tracked

3,375Verified emails

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The 25 largest hydrology consultants based in Australia

Ranked by team size

Top 25 of 490 hydrology consultants 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 hydrology consultants: 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	Tonkin	Partial evidence	Adelaide, AustraliaHQ checked Sep 21, 2026	201-500	237 contacts →
	Partial evidence “Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.” Source: RevenueBase Database · checked Sep 21, 2026
2	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
3	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
4	Engeny	Partial evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	201-500	216 contacts →
	Partial 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	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
8	Burchills Engineering Solutions	Indirect evidence	South East Queensland, AustraliaHQ checked Sep 21, 2026	51-200	98 contacts →
	Indirect evidence “Burchills Engineering Solutions is a South East Qld based, locally owned multidisciplinary team of professional engineers & scientists with a track record of helping clients…” Source: RevenueBase Database · checked Sep 21, 2026
9	CMP Consulting Group	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 21, 2026	51-200	94 contacts →
	Indirect 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
10	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
11	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
12	Reeds Consulting	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	89 contacts →
	Indirect evidence “Reeds Consulting are experts in Land Surveying, Civil Engineering, Planning and Development Consulting.” Source: RevenueBase Database · checked Sep 21, 2026
13	Inertia Engineering	Indirect evidence	South Brisbane, AustraliaHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence “We're a Brisbane-based engineering firm, working across all sectors – housing, land, buildings, and flood.” Source: RevenueBase Database · checked Sep 21, 2026
14	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
15	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
16	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
17	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
18	Westera Partners PTY LTD	Indirect evidence	Southport, AustraliaHQ checked Sep 21, 2026	51-200	64 contacts →
	Indirect 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 21, 2026
19	E2m	Partial evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	64 contacts →
	Partial evidence “At e2m, we set the consultancy standard for terrestrial ecology, environmental approvals and environmental compliance.” Source: RevenueBase Database · checked Sep 21, 2026
20	Capital Engineering Consultants	Partial evidence	North Parramatta, AustraliaHQ checked Sep 21, 2026	11-50	50 contacts →
	Partial evidence “Capital Engineering Consultants (CEC) consists of a highly experienced, motivated and enthusiastic team of Engineering Consultants who each specialize in various fields of…” Source: RevenueBase Database · checked Sep 21, 2026
21	Environmental Earth Sciences International Eesi	Indirect evidence	Chatswood, AustraliaHQ checked Sep 21, 2026	51-200	49 contacts →
	Indirect 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
22	Australasian Groundwater And Environmental AGE Consultants	Partial evidence	Bowen Hills, AustraliaHQ checked Sep 21, 2026	11-50	48 contacts →
	Partial evidence “We are Australia’s specialist groundwater consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
23	WRM Water & Environment PTY LTD	Partial evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	11-50	47 contacts →
	Partial 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
24	Waterproofing Integrity	Indirect evidence	Silverwater, AustraliaHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “Waterproofing Integrity offers independent third-party design consultation and quality control inspection services for waterproofing systems to ensure the intended performance and…” Source: RevenueBase Database · checked Sep 21, 2026
25	CDM Smith Australia	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect 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

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: hydrology consultants. 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 hydrology consultants.
Partial evidence: Its own public description names part of hydrology consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrology consultants. 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 490 hydrology consultants based in Australia

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Hydrology consultants based in Australia at a glance

As of Sep 21, 2026

35.6%Verified-email coverage

19.3Average contacts per company

1-10Median size (employees)

10.0%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

308

11-50

139

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 490 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 hydrology consultants, 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 “hydrology consultants”. 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 hydrology consultants), 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 hydrology consultants, 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, 3,375 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.

Hydrology consultants 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 hydrology consultants, 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 hydrology consultants are there based in Australia?

RevenueBase identified 490 hydrology consultants 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?

Tonkin, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most hydrology consultants?

Sydney leads with 49 headquartered companies, followed by Melbourne (31) and Brisbane (27).

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 3,375 verified decision-maker contacts tracked across these 490 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.