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GWMWater is a water supplier within the terms of the Safe Drinking Water Act 2003, which provides a legislative framework for assuring drinking water quality in Victoria.

We work hard to provide as many of our customers as possible with access to safe, high-quality drinking water that consistently meets consumer and regulatory requirements. Our region has 18 water treatment plants that supply treated water to 89 percent of our urban customers.

Use the table below to find out how your drinking water is treated.

Town Treatment process Chemicals used in treatment process
Ararat

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, fluoride, pH correction

Lime, potassium permanganate, powdered activated carbon, aluminium sulphate, chlorine, fluorosilicic acid

Birchip

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Sulphuric acid, polyaluminium chloride, chlorine

Charlton

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Sulphuric acid, polyaluminium chloride, chlorine

Dimboola

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Sodium hydroxide, aluminium sulphate, chlorine

Donald

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from St Arnaud)

Aluminium sulphate, sodium hydroxide, chlorine
Edenhope

Coagulation, flocculation, dissolved air flotation, filtration, desalination, disinfection

Polyaluminium chloride, chlorine
Great Western

Microfiltration, disinfection, pH correction

Sulphuric acid, polyaluminium chloride, sodium hydroxide, chlorine
Halls Gap

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Lime, aluminium sulphate, chlorine
Hopetoun

Coagulation, flocculation, dissolved air flotation, filtration, desalination, disinfection, pH correction

Soda ash, aluminium sulphate, chlorine
Horsham

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, fluoridation, pH correction (receives water from Horsham, Mt Zero)

Lime, aluminium sulphate, chlorine, carbon dioxide, fluorosilicic acid
Jeparit

Coagulation, flocculation, dissolved air flotation, filtration, desalination, disinfection, pH correction (receives water from Rainbow)

Sulphuric acid, polyaluminium chloride, soda ash, chlorine
Lake Bolac

Microfiltration, disinfection- receives water from Willaura

Soda ash, calcite, aluminium sulphate, hydrochloric acid, sodium hypochlorite, carbon dioxide, ammonia, chlorine
Manangatang

Disinfection, AMIAD filtration

Ultrion 44560 Coagulant, chlorine
Minyip

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from Murtoa)

Sodium hydroxide, aluminium sulphate, chlorine
Murtoa

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Sodium hydroxide, aluminium sulphate, chlorine
Natimuk

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, fluoridation, pH correction (receives water from Horsham, Mt Zero)

Lime, aluminium sulphate, chlorine, carbon dioxide, fluorosilicic acid
Nhill

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from Dimboola)

Sodium hydroxide, aluminium sulphate, chlorine
Ouyen

Microfiltration, disinfection

Polyaluminium chloride, chlorine
Pomonal

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from Halls Gap)

Lime, aluminium sulphate, chlorine
Quambatook

pH correction, coagulation, flocculation, dissolved air floatation, media filtration, carbon filtration, disinfection

Sulphuric Acid, aluminium chlorohydrate, chlorine
Rainbow

Coagulation, flocculation, dissolved air flotation, filtration, desalination, disinfection, pH correction

Sulphuric acid, polyaluminium chloride, soda ash, chlorine
Rupanyup

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from Murtoa)

Sodium hydroxide, aluminium sulphate, chlorine
Sea Lake

Disinfection

Chlorine
St Arnaud

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Aluminium sulphate, sodium hydroxide, chlorine
Stawell

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction

Carbon dioxide, sodium hypochlorite, lime, aluminium sulphate, chlorine
Underbool

Coagulation, sand filtration, pH correction

Sulphuric acid, polyaluminium chloride, chlorine
Warracknabeal Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction  Powdered activated carbon, lime, aluminium sulphate, chlorine
Willaura

Microfiltration, disinfection

Soda ash, calcite, aluminium sulphate, hydrochloric acid, sodium hypochlorite, carbon dioxide, ammonia, chlorine
Wycheproof

Coagulation, flocculation, dissolved air flotation, filtration, disinfection, pH correction (receives water from Charlton)

Sulphuric acid, polyaluminium chloride, chlorine

 

What is the water quality in your town?

GWMWater tests your water quality regularly to ensure that it is fit for purpose.

Find the water quality results for your town

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