Company lists · Data refreshed September 2026

Top 24 Hydrological consulting firms based in Australia

Name: Hydrological 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 340 companies tracked

RevenueBase identified 340 hydrological consulting firms headquartered in Australia as of September 2026 and tracks 3,607 professional contacts across them, including 1,993 with verified work emails. Sydney is the largest hub.

This list covers hydrological 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

340Companies

3,607Contacts tracked

1,993Verified emails

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The 24 largest hydrological consulting firms based in Australia

Ranked by team size

Top 24 of 340 hydrological 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 hydrological 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	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
2	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
3	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
4	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
5	Sequana	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect 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 28, 2026
6	RMCG	Indirect evidence	Bendigo, AustraliaHQ checked Sep 28, 2026	51-200	76 contacts →
	Indirect evidence “Bringing clarity to complexity.” Source: RevenueBase Database · checked Sep 28, 2026
7	Pinion Advisory	Indirect evidence	Clare, AustraliaHQ checked Sep 28, 2026	51-200	70 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 28, 2026
8	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
9	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
10	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
11	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
12	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
13	Waterproofing Integrity	Indirect evidence	Silverwater, AustraliaHQ checked Sep 28, 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 28, 2026
14	CDM Smith Australia	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 28, 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 28, 2026
15	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
16	Wsce Warren Smith Consulting Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	40 contacts →
	Partial 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 28, 2026
17	Sparks Partners Consulting Engineers	Partial evidence	Parramatta, AustraliaHQ checked Sep 28, 2026	11-50	39 contacts →
	Partial evidence “Established more than 30-years ago, Sparks+Partners Consulting Engineers has a rich history and expertise in quality engineering.” Source: RevenueBase Database · checked Sep 28, 2026
18	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
19	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
20	Simmonds & Bristow PTY LTD	Indirect evidence	Tennyson, AustraliaHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “Simmonds & Bristow are integrated water specialists helping regional, remote and small communities across Australia and the South Pacific make good clean water.” Source: RevenueBase Database · checked Sep 28, 2026
21	Wmawater	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “WMAWater is specialist engineering consultancy providing engineering analysis and advice in a range of water-related fields.” Source: RevenueBase Database · checked Sep 28, 2026
22	Marline Newcastle	Indirect evidence	Newcastle, AustraliaHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Marline Newcastle Pty Ltd is a multi-disciplined Engineering Consultancy firm with over 40 years of experience, focusing on high levels of customer service and production of…” Source: RevenueBase Database · checked Sep 28, 2026
23	D Group Australia	Indirect evidence	Fyshwick, AustraliaHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “Founded in 1994, D Group has grown from a local hydraulics company into one of Canberra's leading civil, hydraulics and construction management firms.” Source: RevenueBase Database · checked Sep 28, 2026
24	AW Maritime	Indirect evidence	Melbourne, AustraliaHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “AW Maritime is a specialist port and coastal engineering consultancy with offices in Melbourne and Geelong (VIC), Sydney (NSW) and Sunshine Coast (QLD).” 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: hydrological 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 hydrological consulting firms.
Partial evidence: Its own public description names part of hydrological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrological 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 24 of 340 hydrological consulting firms based in Australia

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Hydrological consulting firms based in Australia at a glance

As of Sep 28, 2026

55.3%Verified-email coverage

10.6Average contacts per company

1-10Median size (employees)

11.2%Largest-city concentration · Sydney

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

220

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 340 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 hydrological 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 “hydrological 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 hydrological 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 hydrological 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, 1,993 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.

Hydrological consulting firms by metro

Hydrological consulting firms in Sydney38

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 hydrological 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 hydrological consulting firms are there based in Australia?

RevenueBase identified 340 hydrological 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?

PSM, headquartered in North Ryde, tops this list with the largest team on record.

Which city has the most hydrological consulting firms?

Sydney leads with 38 headquartered companies, followed by Melbourne (24) and Brisbane (19).

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 1,993 verified decision-maker contacts tracked across these 340 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.