Company lists · Data refreshed September 2026

Top 25 Hydrology consulting firms based in Australia

Name: Hydrology 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 181 companies tracked

RevenueBase identified 181 hydrology consulting firms headquartered in Australia as of September 2026 and tracks 2,207 professional contacts across them, including 1,365 with verified work emails and 302 with mobile numbers. Sydney is the largest hub.

This list covers hydrology 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

181Companies

2,207Contacts tracked

1,365Verified emails

302Mobile numbers

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The 25 largest hydrology consulting firms based in Australia

Ranked by team size

Top 25 of 181 hydrology 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 hydrology 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	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
2	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
3	RMCG	Indirect evidence	Bendigo, AustraliaHQ checked Sep 3, 2026	51-200	79 contacts →
	Indirect evidence “Bringing clarity to complexity.” Source: RevenueBase Database · checked Sep 3, 2026
4	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
5	Hydrobiology	Partial evidence	Milton, AustraliaHQ checked Sep 3, 2026	11-50	66 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 3, 2026
6	HARC	Indirect evidence	Blackburn, AustraliaHQ checked Sep 3, 2026	11-50	56 contacts →
	Indirect evidence “HARC is an employee-owned Australian engineering consultancy firm providing specialist services to the water sector.” Source: RevenueBase Database · checked Sep 3, 2026
7	Environmental Earth Sciences International Eesi	Partial evidence	Chatswood, AustraliaHQ checked Sep 3, 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 3, 2026
8	Australasian Groundwater And Environmental AGE Consultants	Indirect evidence	Bowen Hills, AustraliaHQ checked Sep 3, 2026	11-50	48 contacts →
	Indirect evidence “We are Australia’s specialist groundwater consultancy.” Source: RevenueBase Database · checked Sep 3, 2026
9	WRM Water & Environment PTY LTD	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 3, 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 3, 2026
10	CDM Smith Australia	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 3, 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 3, 2026
11	Sellick Consultants PTY LTD	Partial evidence	Braddon, AustraliaHQ checked Sep 3, 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 3, 2026
12	Bluesphere Environmental	Indirect evidence	Southbank, AustraliaHQ checked Sep 3, 2026	11-50	32 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 3, 2026
13	CAF Consulting	Partial evidence	Shepparton, AustraliaHQ checked Sep 3, 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 3, 2026
14	Wmawater	Indirect evidence	Sydney, AustraliaHQ checked Sep 3, 2026	11-50	28 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 3, 2026
15	Aq2 PTY LTD	Indirect evidence	Perth, AustraliaHQ checked Sep 3, 2026	11-50	26 contacts →
	Indirect evidence “Our Philosophy AQ2 is an independent water resources consultancy based in Perth.” Source: RevenueBase Database · checked Sep 3, 2026
16	Ecosafe International	Indirect evidence	Mandurah, AustraliaHQ checked Sep 3, 2026	11-50	26 contacts →
	Indirect evidence “We are a dynamic and growing specialist water risk management consultancy which focuses on the interface between water and health.” Source: RevenueBase Database · checked Sep 3, 2026
17	Reditus Consulting	Partial evidence	Kirrawee, AustraliaHQ checked Sep 3, 2026	11-50	25 contacts →
	Partial evidence “Reditus is a professional services firm established to provide responsive, high quality, specialist consulting services in hydrogeology, environmental, contaminated land and…” Source: RevenueBase Database · checked Sep 3, 2026
18	Neilly Group PTY LTD	Indirect evidence	Townsville, AustraliaHQ checked Sep 3, 2026	11-50	23 contacts →
	Indirect evidence “Neilly Group Engineering are specialists in surface water and chemical process engineering.” Source: RevenueBase Database · checked Sep 3, 2026
19	Urban Water Solutions	Indirect evidence	Collingwood, AustraliaHQ checked Sep 3, 2026	11-50	23 contacts →
	Indirect evidence “Urban Water Solutions (UWS) is a niche Australian based water engineering consultancy with an office in Collingwood and specialises in professional services for water, wastewater…” Source: RevenueBase Database · checked Sep 3, 2026
20	Valenza Engineering Group	Indirect evidence	Melbourne, AustraliaHQ checked Sep 3, 2026	11-50	21 contacts →
	Indirect evidence “Valenza Engineering is a global specialist groundwater engineering company providing high-quality, full-spectrum technical solutions in the fields of groundwater engineering and…” Source: RevenueBase Database · checked Sep 3, 2026
21	Rockwater	Partial evidence	Jolimont, AustraliaHQ checked Sep 3, 2026	11-50	20 contacts →
	Partial evidence “Rockwater is a specialist hydrogeological and environmental consulting firm with the office in Perth, Western Australia.” Source: RevenueBase Database · checked Sep 3, 2026
22	Streamology	Partial evidence	Docklands, AustraliaHQ checked Sep 3, 2026	11-50	20 contacts →
	Partial evidence “Streamology was born from the desire to combine research with consulting and a passion for the environment.” Source: RevenueBase Database · checked Sep 3, 2026
23	Fifteen50 Consulting PTY LTD	Indirect evidence	Melbourne & Echuca, AustraliaHQ checked Sep 3, 2026	11-50	20 contacts →
	Indirect evidence “The diversity and importance of each of the 1,550 miles of the River Murray drives us.” Source: RevenueBase Database · checked Sep 3, 2026
24	JB Pacific	Indirect evidence	Brisbane, AustraliaHQ checked Sep 3, 2026	11-50	19 contacts →
	Indirect evidence “JB Pacific are specialists in extreme weather engineering, natural hazards and climate-related risks.” Source: RevenueBase Database · checked Sep 3, 2026
25	REC	Partial evidence	Perth, AustraliaHQ checked Sep 3, 2026	11-50	19 contacts →
	Partial evidence “An integrated engineering house, our mining consulting solutions have optimised some of the world’s largest tailings impoundments and backed the success of the design, approval…” 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: hydrology 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 hydrology consulting firms.
Partial evidence: Its own public description names part of hydrology consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrology 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 25 of 181 hydrology consulting firms based in Australia

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Hydrology consulting firms based in Australia at a glance

As of Sep 3, 2026

61.8%Verified-email coverage

13.7%Mobile-number coverage

12.2Average contacts per company

1-10Median size (employees)

12.2%Largest-city concentration · Sydney

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

119

11-50

51-200

201-500

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

12131–60

80861–90

43490–180

2180+

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 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 “hydrology 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 hydrology 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 hydrology 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, 1,365 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.

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 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 hydrology consulting firms are there based in Australia?

RevenueBase identified 181 hydrology 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?

Water Technology PTY LTD, headquartered in Wangaratta, tops this list with the largest team on record.

Which city has the most hydrology consulting firms?

Sydney leads with 22 headquartered companies, followed by Brisbane (12) and Melbourne (11).

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 1,365 verified decision-maker contacts tracked across these 181 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.

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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.