Company lists · Data refreshed November 2026

Top 25 Wastewater infrastructure engineering firms based in Australia

RevenueBase identified 760 company matches for wastewater infrastructure engineering firms associated with Australia as of November 2026 and tracks 30,498 professional contacts across them, including 14,879 with verified work emails. Sydney is the largest hub.

This list covers company matches for wastewater infrastructure engineering firms associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
760Companies
30,498Contacts tracked
14,879Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest wastewater infrastructure engineering firms based in Australia

Ranked by team size
Top 25 of 760 company matches for wastewater infrastructure engineering firms based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSydney, AustraliaHQ recorded Nov 6, 202610001+15,329 contacts →

Exact match

“We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchFortitude Valley, AustraliaHQ recorded Nov 6, 20261,001-5,0001,112 contacts →

Exact match

“We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPerth, AustraliaHQ recorded Nov 6, 20261,001-5,000739 contacts →

Exact match

“Calibre was acquired by WSP.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchRegents Park, AustraliaHQ recorded Nov 6, 2026501-1,000589 contacts →

Exact match

“Abergeldie is a locally owned contractor with 30 years industry experience in Australia and New Zealand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAdelaide, AustraliaHQ recorded Nov 6, 2026501-1,000573 contacts →

Exact match

“Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchGirraween, AustraliaHQ recorded Nov 6, 2026501-1,000378 contacts →

Exact match

“A name synonymous with ‘challenging the status quo’, we have the heart of a humble business, with the vision of something much greater: a vision that drives the growth of our…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHobart, AustraliaHQ recorded Nov 6, 2026201-500286 contacts →

Exact match

“Entura is one of the world’s most experienced specialist power and water consulting firms.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMacquarie Park, AustraliaHQ recorded Nov 6, 2026201-500265 contacts →

Exact match

“Enviropacific is committed to working towards creating safer environments and sustainable communities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAdelaide, AustraliaHQ recorded Nov 6, 2026201-500247 contacts →

Exact match

“Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAdelaide, AustraliaHQ recorded Nov 6, 2026201-500237 contacts →

Exact match

“Company Overview: TRILITY is an established industry leader, dedicated in the delivery of water, wastewater, reuse and bio-solids solutions across Australia and New Zealand’s…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHamilton, AustraliaHQ recorded Nov 6, 2026201-500204 contacts →

Exact match

“We offer insightful, original design thinking, implemented by a team with proven expertise to deliver flexible fit-for-purpose critical infrastructure solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVictoria, AustraliaHQ recorded Nov 6, 2026501-1,000193 contacts →

Exact match

“TDG environmental is a proudly Australian-owned company operating throughout Australia and New Zealand.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchShepparton, AustraliaHQ recorded Nov 6, 202651-200177 contacts →

Exact match

“Aquatec partners with Government, business and residential clients to deliver water, wastewater and odour control solutions for the long-term.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSydney Olympic Park, AustraliaHQ recorded Nov 6, 2026201-500171 contacts →

Exact match

“At Atlan Stormwater, we draw on more than 45 years’ experience in the design, testing and manufacture of water treatment systems that are utilised in over 45 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchThebarton, AustraliaHQ recorded Nov 6, 202651-200146 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLane Cove West, AustraliaHQ recorded Nov 6, 202651-200143 contacts →

Exact match

“Founded by the late Peter Ward in 1973, WARD is a multi-disciplined and full-service civil and environmental engineering contractor.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBurwood, AustraliaHQ recorded Nov 6, 202651-200126 contacts →

Exact match

“We are a fast growing consulting firm with a skilled and experienced team of engineers, designers and project managers that focus on problem solving.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRichmond, AustraliaHQ recorded Nov 6, 202651-200126 contacts →

Exact match

“FSC is an employee-owned professional services company providing engineering, project management and environmental consulting services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSouth East Queensland, AustraliaHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“At Burchills, we believe the best outcomes come from putting people first, starting with our own team.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchYatala, AustraliaHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Rob Carr offers advanced technical capabilities for utilities infrastructure and is recognised as a market leader in microtunnelling and other complex underground works across all…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchEpping, AustraliaHQ recorded Nov 6, 2026501-1,000116 contacts →

Exact match

“Comdain Infrastructure is part of the ASX 300 listed Service Stream group and has a strong reputation for innovative design, construction and maintenance solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAdelaide, AustraliaHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“TMK Consulting Engineers success and growth is built on a reputation of delivering broad-based engineering design that is high quality, technical excellence, reliable and building…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchWangara, AustraliaHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“ADENCO is a dynamic company in the Water Management & Civil and Mechanical Engineering Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWulkuraka, AustraliaHQ recorded Nov 6, 2026201-500106 contacts →

Exact match

“Aquatec Maxcon is a leading provider of water and wastewater technology and solutions in Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCampbellfield, AustraliaHQ recorded Nov 6, 202651-200105 contacts →

Exact match

“Civil Infrastructure Group (CIG) was formed in 2016 to provide specialist construction services to the civil infrastructure industry in Victoria.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 760 wastewater infrastructure engineering firms based in Australia

See the full list, filter by size, metro and specialty, and access 14,879 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Wastewater infrastructure engineering firms based in Australia at a glance

As of Nov 6, 2026
48.8%Verified-email coverage
40.1Average contacts per company
11-50Median size (employees)
8.8%Largest-city concentration · Sydney
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
354
11-50
261
51-200
95
201-500
22
501-1,000
10
1,001-5,000
4
5,001-10,000
1
10001+
3

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 760 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Australia whose business descriptions match “wastewater infrastructure engineering firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 14,879 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “wastewater infrastructure engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many wastewater infrastructure engineering firms are there based in Australia?

RevenueBase identified 760 company matches for wastewater infrastructure engineering firms associated with Australia as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

GHD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most wastewater infrastructure engineering firms?

Sydney leads with 67 company records, followed by Melbourne (37) and Brisbane (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 14,879 professional contacts with verified work emails tracked across these 760 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 760 wastewater infrastructure engineering firms based in Australia. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.