Australia Water Treatment Chemicals Market Size and Share - Growth Analysis Report and Forecast Trends (2026-2035)

Market Overview

The Australia water treatment chemicals market is shaped by regulated demand. Utilities must meet the Australian Drinking Water Guidelines every day, and industrial users must treat process and effluent water, so volumes follow plant throughput and compliance rather than discretionary spending.

Three forces are shaping demand: tighter PFAS values issued by the National Health and Medical Research Council in June 2025; a wave of desalination and recycled water plants in Western Australia, Victoria and New South Wales; and concern over single-source supply of chlorine.

In April 2026, Victoria ordered 150 billion litres from its desalination plant, in June 2026 Water Corporation announced an A$81 million recycled water expansion at Kwinana, and in July 2026 Coogee announced a second drummed chlorine source for Queensland.

Key Market Trends and Insights

• Tighter PFAS limit: The National Health and Medical Research Council set PFOS at 8 ng/L in June 2025, down from 70 ng/L, with states setting compliance timelines.
• Desalination build-out: Western Australia's A$2.8 billion Alkimos plant will supply 50 billion litres a year, and its 33.5 km trunk main was half laid by June 2026.
• Recycled water growth: Water Corporation's A$81 million Kwinana expansion adds 10 million litres a day, a 60% increase in recycled water output, announced in June 2026.
• Chlorine supply risk: Coogee said in July 2026 that Australian drummed chlorine depends heavily on one Victorian source, and it will add a drumming facility at Lytton.

Australia Water Treatment Chemicals Market Size and Forecast

The market is moving from steady volume replacement towards compliance, desalination and reuse-led demand. Municipal drinking water leads revenue today because every utility doses coagulants, disinfectants and pH chemicals daily, while municipal wastewater and recycling advances fastest as industrial reuse schemes and nutrient limits add treatment steps. Corrosion and scale inhibitors grow strongly from a smaller base as reverse osmosis plants multiply, and seawater and brackish sources gain share as desalination capacity is built. New South Wales remains the largest region, and Western Australia builds fastest as desalination, recycling and mining projects proceed together. Secure bulk chlorine supply and PFAS removal reward suppliers with logistics depth and technical service.

Key Takeaways: Australia Water Treatment Chemicals Market

Compliance And Reuse Anchor Long-Term Demand

Revenue should grow from AUD 1.20 billion in 2025 to AUD 1.97 billion in 2035 at a 5.1% CAGR, supported by PFAS limits, desalination and recycled water schemes.

Scale Control And Reuse Lead Growth

Coagulants and flocculants hold the largest chemical share, but corrosion and scale inhibitors grow at an estimated 7.2% CAGR and seawater and brackish sources at 6.8%, helped by Alkimos and Belmont.

Chlorine Security Shapes Supplier Strategy

Utilities depend on gaseous and liquid disinfectants, so supplier resilience, hazard approvals and delivery networks now influence contract awards.

• Coogee: Lytton chlorine drumming facility announced in July 2026
• Safe Work Australia: chlorine exposure limit unchanged from 1 December 2026
• Goulburn Valley Water: 16-chemical supply tender closed in March 2025

Australia Water Treatment Chemicals Market Report Summary

Key Insight

Demand is compliance-led rather than discretionary. PFAS limits, desalination, recycling and chlorine supply security support steady growth, while scale control and recycling-linked chemistry expand faster than the overall market.

Key Trends in the Australia Water Treatment Chemicals Market

The Australia water treatment chemicals market is being reshaped by desalination construction, industrial recycled water, drought-driven supply orders and tighter PFAS guideline values.

August 2026 - Hunter Water Completes Marine Works For Belmont Desalination Plant

• Hunter Water said on 21 August 2026 that all major marine works were complete, including an 830-metre seawater intake tunnel and the offshore intake dome.
• The plant will deliver up to 30 million litres a day, about 15% of Lower Hunter demand, and is scheduled to operate in 2028.
• Reverse osmosis plants of this type add pre-treatment, antiscalant and membrane cleaning chemical demand.

June 2026 - Water Corporation Expands Kwinana Water Reclamation Plant

• Water Corporation announced on 29 June 2026 an A$81 million expansion adding 10 million litres a day to current output of almost 17 million litres.
• Customers include green iron and steelmaking, battery mineral processing, and fuels and energy users in the Kwinana Industrial Area.
• A new 3 km supply pipeline is due to start in July 2026.

April 2026 - Victoria Orders 150 Billion Litres Of Desalinated Water

• Water Minister Gayle Tierney ordered 150 billion litres from the Victorian Desalination Plant on 7 April 2026, citing the lowest metropolitan storages in more than six years.
• Geelong storage stood at 37.5%, and the plant can supply up to one-third of Melbourne's annual demand.
• Large orders lift membrane, antiscalant and post-treatment chemical use at the plant.

June 2025 - NHMRC Issues Updated PFAS Guideline Values

• The National Health and Medical Research Council published updated Australian Drinking Water Guidelines on 25 June 2025, setting PFOS at 8 ng/L and PFOA at 200 ng/L.
• PFHxS was set at 30 ng/L and PFBS at 1,000 ng/L, with states and territories setting compliance timelines for water providers.
• NHMRC said most supplies already meet the new values.

Key Insight

Growth is anchored by infrastructure and regulation. Desalination, reuse and PFAS rules lift treatment intensity, while drought-driven orders show how quickly chemical volumes can change.

Recent Market Developments in the Australia Water Treatment Chemicals Market

Recent developments, presented from the most recent, show the Australia water treatment chemicals market responding to chlorine supply risk, workplace rules and long-term utility operating contracts.

July 2026 - Coogee Plans Chlorine Drumming Facility At Lytton

• Coogee announced on 20 July 2026 that it will build a chlorine drumming facility at its Lytton chlor-alkali plant in Queensland.
• Australian drummed chlorine supply depends heavily on a single Victorian source, and the facility would add a second domestic option.
• Lytton will become a Major Hazard Facility, supplementing Coogee's imported drums into Western Australia and Far North Queensland.

June 2026 - Safe Work Australia Confirms No Change To Chlorine Exposure Limit

• Safe Work Australia released details of its move to workplace exposure limits in mid-June 2026, and the new limits take effect on 1 December 2026.
• Chlorine keeps its existing limit of 1 ppm, equal to 3 mg per cubic metre, for both the eight-hour and short-term values.
• The unchanged limit keeps current chlorine handling practice in place.

November 2025 - Veolia Secures A$700 Million Of Utility Contracts

• Veolia announced on 12 November 2025 a 15-year contract with Central Highlands Water covering six treatment plants.
• It also won a further 10-year Hunter Water contract that includes Belmont Desalination Plant, and an extension of up to four years at Seqwater's Gold Coast Desalination Plant.
• The contracts lock in operator-led chemical purchasing at large plants.

January 2025- Sydney Water Trials Mobile PFAS Treatment At Cascade

• Sydney Water reported in January 2025 that a A$3.4 million mobile unit at Cascade Water Filtration Plant cut PFAS below the proposed guideline values within a month.
• The unit treats 4 million litres a day using granular activated carbon and ion exchange, and will operate for up to three years.
• NSW Health will guide implementation of the final guidelines.

Key Insight

The sequence points to resilience and compliance. Chlorine supply is being diversified, workplace limits are stable, and long operating contracts and PFAS trials show where treatment spending is heading.

Australia Water Treatment Chemicals Industry Segmentation

The Expert Market Research’s report on the Australia Water Treatment Chemicals Market offers a detailed analysis of the market based on the following segments.

Market Breakup by Chemical Type

• Coagulants and Flocculants
• Disinfectants and Oxidants
• pH Adjusters and Neutralisers
• Corrosion and Scale Inhibitors
• Biocides and Other Specialty Chemicals
• Others

Coagulants and Flocculants lead because Goulburn Valley Water's tender, published in January 2025, sought liquid alum, ferric sulphate and aluminium chlorohydrate, and mines also use flocculants in thickeners. Disinfectants and Oxidants follow, with the same tender listing chlorine gas in 70 kg and 920 kg cylinders and sodium hypochlorite. pH Adjusters and Neutralisers cover caustic soda, hydrochloric acid and sulphuric acid. Corrosion and Scale Inhibitors grow fastest at an estimated 7.2% CAGR through 2035, as Veolia's Gold Coast desalination extension of November 2025 and Alkimos add membrane plants. Biocides and Other Specialty Chemicals include odour-control agents, and activated carbon for PFAS described by Redox in June 2026.

Market Breakup by Application

• Municipal Drinking Water
• Municipal Wastewater and Recycling
• Mining and Mineral Processing
• Power and Industrial Cooling
• Food, Beverage and Other Industrial
• Others

Municipal Drinking Water leads revenue because Veolia alone supplies about 1,480 ML a day from 68 plants, and its Central Highlands Water award of November 2025 covers six more. Municipal Wastewater and Recycling grows fastest at an estimated 6.1% CAGR through 2035, as Water Corporation's Kwinana expansion of June 2026 raises recycled output by 60%. Mining and Mineral Processing draws on 749 GL of consumption recorded by the Australian Bureau of Statistics for 2023-24. Power and Industrial Cooling relies on biocides and scale control, including fuels and energy users at Kwinana. Food, Beverage and Other Industrial reflects manufacturing consumption of 472 GL in the same release of December 2025.

Market Breakup by Water Source

• Surface Water
• Groundwater and Mine Water
• Seawater and Brackish Water
• Recycled and Treated Effluent
• Others

Surface Water leads because Sydney Water's Cascade plant, trialling PFAS removal in January 2025, and Central Highlands Water's plants treat reservoir and river supplies that need coagulation. Seawater and Brackish Water grow fastest at an estimated 6.8% CAGR through 2035, with Hunter Water completing Belmont's marine works in August 2026 and Victoria ordering 150 billion litres in April 2026. Groundwater and Mine Water includes remote operations, where Ixom reported in May 2026 a switch to bulk delivery for a new Western Australian mine. Recycled and Treated Effluent is lifted by the Kwinana scheme, whose second phase pipeline was due to start in July 2026.

Market Breakup by Region

• New South Wales
• Victoria
• Queensland
• Western Australia
• South Australia
• Others (incl. Tasmania, ACT and Northern Territory)

New South Wales dominates, anchored by Sydney Water's PFAS programme and Hunter Water's Belmont plant, and grows at an estimated 4.8% CAGR. Western Australia is fastest at an estimated 6.3%, with Alkimos, whose trunk main was half laid in June 2026, the Kwinana expansion and mining demand. Queensland grows at 5.3%, helped by Coogee's Lytton chlorine plan of July 2026 and the Gold Coast desalination extension. Victoria, at 4.9%, reflects the April 2026 desalination order. South Australia, at 4.4%, grows slowest from a mature utility base. Others, at 5.0%, covers Tasmania, the ACT and the Northern Territory.

Purchase the Regional Overview for USD 1099

If you choose to purchase the full report at a later stage, the amount already paid will be adjusted, and you will only need to pay the remaining balance.

Purchase the Regional Overview for USD 1099

If you choose to purchase the full report at a later stage, the amount already paid will be adjusted, and you will only need to pay the remaining balance.

Competitive Landscape in the Australia Water Treatment Chemicals Market

Competition combines local chemical manufacturers, chlor-alkali producers, distributors, global water specialists and plant operators. Entry barriers include dangerous goods licensing, bulk logistics, utility panel contracts, technical service capability and the ability to guarantee supply during disruptions.

Ixom

Ixom supplies chemicals to water, mining, food and beverage, building and other industries in Australia and New Zealand. In May 2026 it reported moving a new, remote Western Australian mining operation, handled by its Kalgoorlie team, from intermediate bulk containers used for more than 18 months to bulk delivery in reusable ISOtainers, after investing in additional ISOtainer assets and consolidating loads into triple configurations.

Coogee Chemicals

Coogee Chemicals is an Australian chlor-alkali producer with nearly 40 years of chlorine manufacture and handling, making caustic soda at Kwinana and Kemerton and chlorine at Lytton in Queensland. On 20 July 2026 it announced a chlorine drumming facility at Lytton to give Queensland, the Northern Territory, South Australia and Western Australia a second domestic drummed chlorine source.

Veolia

Veolia Australia operates 68 water, wastewater and recycled water treatment plants and supplies about 1,480 ML of drinking water daily to more than three million Australians. On 12 November 2025 it announced A$700 million of new contracts, covering Central Highlands Water, Hunter Water including Belmont Desalination Plant, and an extension at Seqwater's Gold Coast Desalination Plant, which produces up to 43 GL a year.

Redox

Redox, founded in Sydney in 1965, distributes more than 1,000 chemicals across Australia and New Zealand, and its water care range spans flocculants, coagulants, pH adjusters, disinfectants, biocides and scale inhibitors. In June 2026 senior business manager Clement Bourgeois named industrial water reuse, municipal upgrades, advanced oxidation and membranes as growth areas, and highlighted activated carbon for PFOA and PFOS removal.

Other players operating in the Australia water treatment chemicals market include Ecolab, Solenis, Brenntag, Xylem, and Omega Chemicals, alongside regional distributors, operators and specialty blenders supplying utilities, mines and industrial sites across Australia.

Key Insight

Competition rests on supply security, dangerous goods capability, technical service and contract delivery rather than price alone. Producers, distributors and operators all compete, and utilities favour proven reliability.