Company lists · Data refreshed September 2026

Top 25 Wastewater treatment system construction companies based in Australia

Name: Wastewater treatment system construction companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 209 companies tracked

RevenueBase identified 209 wastewater treatment system construction companies headquartered in Australia as of September 2026 and tracks 3,332 professional contacts across them, including 1,805 with verified work emails. Melbourne is the largest hub.

This list covers wastewater treatment system construction 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 19, 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 19, 2026 86% judged on-target in blind review

209Companies

3,332Contacts tracked

1,805Verified emails

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The 25 largest wastewater treatment system construction companies based in Australia

Ranked by team size

Top 25 of 209 wastewater treatment system construction companies based in Australia, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater treatment system construction 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	Enviropacific	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 19, 2026	201-500	260 contacts →
	Indirect evidence “Enviropacific is committed to working towards creating safer environments and sustainable communities.” Source: RevenueBase Database · checked Sep 19, 2026
2	Trility	Partial evidence	Adelaide, AustraliaHQ checked Sep 19, 2026	201-500	217 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 19, 2026
3	National Pump & Energy	Indirect evidence	Derrimut, AustraliaHQ checked Sep 19, 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 19, 2026
4	Aquatec	Partial evidence	Shepparton, AustraliaHQ checked Sep 19, 2026	51-200	177 contacts →
	Partial evidence “Aquatec partners with Government, business and residential clients to deliver water, wastewater and odour control solutions for the long-term.” Source: RevenueBase Database · checked Sep 19, 2026
5	TDG Environmental	Indirect evidence	Victoria, AustraliaHQ checked Sep 19, 2026	501-1,000	176 contacts →
	Indirect evidence “TDG environmental is a proudly Australian-owned company operating throughout Australia and New Zealand.” Source: RevenueBase Database · checked Sep 19, 2026
6	Atlan Stormwater	Strong evidence	Sydney Olympic Park, AustraliaHQ checked Sep 19, 2026	201-500	147 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 19, 2026
7	Guidera O'connor	Strong evidence	Thebarton, AustraliaHQ checked Sep 19, 2026	51-200	137 contacts →
	Strong 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 19, 2026
8	Hydroflux PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 19, 2026	51-200	95 contacts →
	Strong evidence “Water l Science l Technology The Hydroflux Group is a team of water and wastewater treatment experts harnessing the power of world leading research and technologies for a more…” Source: RevenueBase Database · checked Sep 19, 2026
9	CMP Consulting Group	Partial evidence	Mulgrave, AustraliaHQ checked Sep 19, 2026	51-200	94 contacts →
	Partial 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 19, 2026
10	Xylem ANZ	Indirect evidence	Kemps Creek, AustraliaHQ checked Sep 19, 2026	n/a	90 contacts →
	Indirect evidence “Xylem (XYL) is a leading global water technology company committed to solving critical water and infrastructure challenges with technological innovation.” Source: RevenueBase Database · checked Sep 19, 2026
11	PPS Group	Indirect evidence	Perth, AustraliaHQ checked Sep 19, 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 19, 2026
12	Water Treatment Services Australia	Strong evidence	Townsville, AustraliaHQ checked Sep 19, 2026	11-50	80 contacts →
	Strong evidence “Water Treatment Services solves complex water problems using intelligent technologies and a whole-of-system approach to make water fit for use, reuse and release.” Source: RevenueBase Database · checked Sep 19, 2026
13	Scidev	Indirect evidence	Seven Hills, AustraliaHQ checked Sep 19, 2026	51-200	78 contacts →
	Indirect evidence “Our solutions allow our clients to recycle and reuse water, improve operational efficiencies and reduce their environmental footprints.” Source: RevenueBase Database · checked Sep 19, 2026
14	MAK Water	Strong evidence	Malaga, AustraliaHQ checked Sep 19, 2026	51-200	69 contacts →
	Strong evidence “At MAK Water, we help clients achieve reliable, cost-effective and sustainable water, wastewater and sewage treatment solutions.” Source: RevenueBase Database · checked Sep 19, 2026
15	Saunders Aqua Metro	Partial evidence	Mulgrave, AustraliaHQ checked Sep 19, 2026	501-1,000	62 contacts →
	Partial evidence “In 2025, Aqua Metro was acquired by Saunders (ASX:SND)- a leading Australian engineering, construction and industrial services company delivering multidisciplinary solutions…” Source: RevenueBase Database · checked Sep 19, 2026
16	Spirac	Partial evidence	Bibra Lake, AustraliaHQ checked Sep 19, 2026	51-200	62 contacts →
	Partial evidence “SPIRAC PROVIDES SOLIDS HANDLING SOLUTIONS FOR MUNICIPAL WASTEWATER AND INDUSTRIAL APPLICATIONS Municipal screening, grit and sludge handling solutions are our primary focus, but…” Source: RevenueBase Database · checked Sep 19, 2026
17	Atlas Engineering Group	Partial evidence	North Sydney, AustraliaHQ checked Sep 19, 2026	51-200	51 contacts →
	Partial evidence “Atlas, now part of the Sequana Group, has been specialising in brownfield water & wastewater programs and projects from day one.” Source: RevenueBase Database · checked Sep 19, 2026
18	Hydro Flow Australia	Partial evidence	Noble Park North, AustraliaHQ checked Sep 19, 2026	51-200	49 contacts →
	Partial evidence “Manufacturer and supplier of water treatment chemicals, equipment and support services.” Source: RevenueBase Database · checked Sep 19, 2026
19	Amiad Water Systems	Partial evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	11-50	46 contacts →
	Partial evidence “Amiad Water Systems has operated in Australia & New Zealand since 1979 and is a fully owned subsidiary of Amiad.” Source: RevenueBase Database · checked Sep 19, 2026
20	The Environmental Group Limited	Indirect evidence	Mount Waverley, AustraliaHQ checked Sep 19, 2026	201-500	44 contacts →
	Indirect evidence “Engineering a Sustainable Future The Environmental Group Limited is an environmental engineering company that provides products and engineering services to various industries to…” Source: RevenueBase Database · checked Sep 19, 2026
21	Aqseptence Group Australia	Partial evidence	Geebung, AustraliaHQ checked Sep 19, 2026	1,001-5,000	31 contacts →
	Partial evidence “Aqseptence Group is a global specialist for water and wastewater management, screening and filtration technologies for separating solids from liquids and gases, as well as vacuum…” Source: RevenueBase Database · checked Sep 19, 2026
22	Ozzi Kleen	Indirect evidence	Kunda Park, AustraliaHQ checked Sep 19, 2026	51-200	31 contacts →
	Indirect evidence “As the team behind the Ozzi Kleen product range, we strive to engineer, produce and maintain the highest level of quality not only for the pride we take in delivering reliable…” Source: RevenueBase Database · checked Sep 19, 2026
23	Aerofloat Australia	Strong evidence	Taren Point, AustraliaHQ checked Sep 19, 2026	11-50	30 contacts →
	Strong evidence “Aerofloat is a design & construct business that specialises in industrial wastewater treatment and sewage treatment.” Source: RevenueBase Database · checked Sep 19, 2026
24	ACO Halgan PTY LTD	Strong evidence	Wetherill Park, AustraliaHQ checked Sep 19, 2026	51-200	26 contacts →
	Strong evidence “ACO Halgan Pty Ltd, specialises in all aspects of wastewater treatment.” Source: RevenueBase Database · checked Sep 19, 2026
25	Global Water	Partial evidence	Tonsley, AustraliaHQ checked Sep 19, 2026	11-50	23 contacts →
	Partial evidence “Global Water partners with municipalities, engineers, civil contractors and plumbers to engineer and deliver world-class potable water, wastewater and stormwater collection…” Source: RevenueBase Database · checked Sep 19, 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: wastewater treatment system construction 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 wastewater treatment system construction companies.
Partial evidence: Its own public description names part of wastewater treatment system construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater treatment system construction 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 25 of 209 wastewater treatment system construction companies based in Australia

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Wastewater treatment system construction companies based in Australia at a glance

As of Sep 19, 2026

54.2%Verified-email coverage

15.9Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Melbourne

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 209 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 wastewater treatment system construction 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 “wastewater treatment system construction 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 wastewater treatment system construction 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 wastewater treatment system construction 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, 1,805 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 19, 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 wastewater treatment system construction 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 wastewater treatment system construction companies are there based in Australia?

RevenueBase identified 209 wastewater treatment system construction 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?

Enviropacific, headquartered in Macquarie Park, tops this list with the largest team on record.

Which city has the most wastewater treatment system construction companies?

Melbourne leads with 10 headquartered companies, followed by Perth (10) and Sydney (9).

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 1,805 verified decision-maker contacts tracked across these 209 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 19, 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.