Company lists · Data refreshed September 2026

Top 25 Commercial water treatment system construction companies based in Australia

Name: Commercial water 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 16, 2026 263 companies tracked

RevenueBase identified 263 commercial water treatment system construction companies headquartered in Australia as of September 2026 and tracks 3,521 professional contacts across them, including 1,616 with verified work emails. Melbourne is the largest hub.

This list covers commercial water 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 16, 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 16, 2026 86% judged on-target in blind review

263Companies

3,521Contacts tracked

1,616Verified emails

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The 25 largest commercial water treatment system construction companies based in Australia

Ranked by team size

Top 25 of 263 commercial water treatment system construction companies based in Australia, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to commercial water 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	Hydrochem	Strong evidence	Braeside, AustraliaHQ checked Sep 16, 2026	201-500	255 contacts →
	Strong evidence “HydroChem is one of Australia’s leading companies providing high quality water treatment services.” Source: RevenueBase Database · checked Sep 16, 2026
2	Trility	Partial evidence	Adelaide, AustraliaHQ checked Sep 16, 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 16, 2026
3	Aquatec	Partial evidence	Shepparton, AustraliaHQ checked Sep 16, 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 16, 2026
4	Atlan Stormwater	Strong evidence	Sydney Olympic Park, AustraliaHQ checked Sep 16, 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 16, 2026
5	Allied Pumps	Strong evidence	Canning Vale, AustraliaHQ checked Sep 16, 2026	51-200	142 contacts →
	Strong evidence “With over 30 years specialising and innovation in purpose-built and complete water package pumping and treatment solutions locally, nationally and internationally, it’s our vision…” Source: RevenueBase Database · checked Sep 16, 2026
6	Guidera O'connor	Strong evidence	Thebarton, AustraliaHQ checked Sep 16, 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 16, 2026
7	Integra Water Treatment Solutions	Strong evidence	Miranda, AustraliaHQ checked Sep 16, 2026	51-200	119 contacts →
	Strong evidence “Established in 1990, Integra Water Treatment Solutions is one of Australia’s largest privately owned and operated water treatment providers.” Source: RevenueBase Database · checked Sep 16, 2026
8	Hydroflux PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 16, 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 16, 2026
9	Xylem ANZ	Partial evidence	Kemps Creek, AustraliaHQ checked Sep 16, 2026	n/a	90 contacts →
	Partial 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 16, 2026
10	PPS Group	Partial evidence	Perth, AustraliaHQ checked Sep 16, 2026	201-500	81 contacts →
	Partial 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 16, 2026
11	Water Treatment Services Australia	Strong evidence	Townsville, AustraliaHQ checked Sep 16, 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 16, 2026
12	Scidev	Partial evidence	Seven Hills, AustraliaHQ checked Sep 16, 2026	51-200	78 contacts →
	Partial evidence “Our solutions allow our clients to recycle and reuse water, improve operational efficiencies and reduce their environmental footprints.” Source: RevenueBase Database · checked Sep 16, 2026
13	MAK Water	Strong evidence	Malaga, AustraliaHQ checked Sep 16, 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 16, 2026
14	Protex Water	Partial evidence	Corio, AustraliaHQ checked Sep 16, 2026	51-200	65 contacts →
	Partial evidence “Born from a 35-year heritage in the water industry, Protex Water is the new name for AKS Industries, effective 1st July 2024.” Source: RevenueBase Database · checked Sep 16, 2026
15	Hydro Flow Australia	Strong evidence	Noble Park North, AustraliaHQ checked Sep 16, 2026	51-200	49 contacts →
	Strong evidence “Manufacturer and supplier of water treatment chemicals, equipment and support services.” Source: RevenueBase Database · checked Sep 16, 2026
16	Amiad Water Systems	Strong evidence	Melbourne, AustraliaHQ checked Sep 16, 2026	11-50	46 contacts →
	Strong 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 16, 2026
17	Complete Home Filtration	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 16, 2026	51-200	46 contacts →
	Indirect evidence “Protect your home and investment with Complete Home Filtration.” Source: RevenueBase Database · checked Sep 16, 2026
18	Southland Filtration PTY LTD	Strong evidence	Prestons, AustraliaHQ checked Sep 16, 2026	11-50	37 contacts →
	Strong evidence “Southland Filtration is an Australian-owned B2B company delivering high purity water systems and water filtration solutions to healthcare, commercial and industrial clients since…” Source: RevenueBase Database · checked Sep 16, 2026
19	Aqseptence Group Australia	Partial evidence	Geebung, AustraliaHQ checked Sep 16, 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 16, 2026
20	Ozzi Kleen	Indirect evidence	Kunda Park, AustraliaHQ checked Sep 16, 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 16, 2026
21	Aerofloat Australia	Partial evidence	Taren Point, AustraliaHQ checked Sep 16, 2026	11-50	30 contacts →
	Partial evidence “Aerofloat is a design & construct business that specialises in industrial wastewater treatment and sewage treatment.” Source: RevenueBase Database · checked Sep 16, 2026
22	Oleology	Strong evidence	Henderson, AustraliaHQ checked Sep 16, 2026	11-50	29 contacts →
	Strong evidence “OLEOLOGY is the name in water treatment, that offers effective, economically viable and market leading oil and hydrocarbon removal solutions.” Source: RevenueBase Database · checked Sep 16, 2026
23	BHF Technologies	Partial evidence	Oakleigh, AustraliaHQ checked Sep 16, 2026	11-50	27 contacts →
	Partial evidence “Australasia’s leading filtration specialist, BHF Technologies supplies filtration products and designs, fabricates, installs and services liquid, gas and water purification…” Source: RevenueBase Database · checked Sep 16, 2026
24	ACO Halgan PTY LTD	Partial evidence	Wetherill Park, AustraliaHQ checked Sep 16, 2026	51-200	26 contacts →
	Partial evidence “ACO Halgan Pty Ltd, specialises in all aspects of wastewater treatment.” Source: RevenueBase Database · checked Sep 16, 2026
25	Waternish Engineering	Indirect evidence	Lonsdale, AustraliaHQ checked Sep 16, 2026	11-50	23 contacts →
	Indirect evidence “For more than two decades, Waternish has developed a reputation for its dynamic, client-focused professionalism and quality engineering solutions.” Source: RevenueBase Database · checked Sep 16, 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: commercial water 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 commercial water treatment system construction companies.
Partial evidence: Its own public description names part of commercial water 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 commercial water 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 263 commercial water treatment system construction companies based in Australia

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Commercial water treatment system construction companies based in Australia at a glance

As of Sep 16, 2026

45.9%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

6.5%Largest-city concentration · Melbourne

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

130

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 263 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 commercial water 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 “commercial water 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 commercial water 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 commercial water 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, 1,616 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 16, 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 commercial water 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 commercial water treatment system construction companies are there based in Australia?

RevenueBase identified 263 commercial water 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?

Hydrochem, headquartered in Braeside, tops this list with the largest team on record.

Which city has the most commercial water treatment system construction companies?

Melbourne leads with 17 headquartered companies, followed by Sydney (15) and Perth (14).

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 1,616 verified decision-maker contacts tracked across these 263 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 16, 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.