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Current as at 10:30 am, 28 February 2019.

We advise that the interruption to Horsham and Haven’s water supply experienced this morning has been rectified. Customers may experience discolouration (turbidity) to their water for a period of time. We ask customers to continue to minimise their water use outside the home whilst supplies to the township recoup.

We will keep customers updated through our website at and Facebook page.

Customers experiencing any service difficulties or faults, please call us anytime on 1800 188 586.

Current water restrictions

Permanent Water Saving Rules

Safe to drink?


The water is safe for drinking. It is filtered and disinfected to meet the strict guidelines for safe drinking water. It can be used for drinking, cooking, making ice, cleaning your teeth and for showering or bathing.

Drinking water treatment

Treatment process

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

Chemicals used in the process

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

Water quality

We test the water quality regularly. View the test results

Water supply

Your water comes from the Grampians Headworks Storages. The "headworks" is the area in and around the Grampians ranges and Wimmera River. It includes 11 reservoirs and diversion weirs and the streams and channels connecting them.

GWMWater maintains the infrastructure of the headworks, while the independent Storage Manager manages the water resources.

Your drinking water is treated at the Mt Zero Water Treatment Plant and piped to Horsham.

Sewerage services

Yes - Gravity Sewer System

Find out how to connect

Service disruptions

See latest outage and water quality alerts


Check the water supply for... 

Rural Properties Cowangie Hopetoun Minyip Pomonal Ultima
Antwerp Culgoa Horsham Miram Quambatook Underbool
Apsley Dimboola Jeparit Moyston Rainbow Warracknabeal
Ararat Donald Jung Murrayville Rupanyup Watchem
Berriwillock Dooen Kaniva Murtoa Sea Lake Waitchie
Beulah Edenhope Kiata Nandaly Serviceton Walpeup
Birchip Elmhurst Lake Bolac Natimuk Speed Westmere
Brim Glenorchy Lalbert Nhill St Arnaud Wickliffe
Buangor Goroke Lascelles Nullawil Stawell Willaura
Charlton Great Western Lillimur Ouyen Streatham Woomelang
Chillingollah Halls Gap Manangatang Patchewollock Tarranyurk Wycheproof
Chinkapook Harrow Marnoo Pimpinio Tempy Yaapeet




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