Changes in water quality

Goulburn-Murray Water provides a raw water product to our customers and does not provide treatment services. As the water is untreated, the open nature of the water storage and supply systems means that Goulburn-Murray Water cannot guarantee any particular quality of water.

Changes in water quality can occur for a variety of reasons and water users are encouraged to keep a lookout for changes in water quality at all times.

During storms or rainfall events in particular changes in water quality in natural water bodies and in GMW’s irrigation systems can occur.

Rain can wash leaves, branches, litter and sediment into waterways and affect the quality of water supplies. Discolouration of the water can occur, giving it a dark appearance as well as producing a pungent earthy odour. The water may contain very large numbers of bacteria.

Decomposing vegetation and large amounts of sediment can reduce the amount of oxygen dissolved in the water. This may adversely affect fish, yabbies and other aquatic life that need oxygen dissolved in the water in order to breathe.

As rainfall carries nutrients into water bodies it may provide ideal conditions for blue‑green algae growth.

People drawing water directly from natural water bodies in the region or from GMW's irrigation system are advised to monitor their supply source and make alternative arrangements if water quality deteriorates.

GMW customers are reminded that the water supplied by GMW is untreated and is not suitable for drinking or food preparation. Untreated water should also not be used for purposes where skin contact occurs, such as showering.

Blackwater at Boosey Creek
Blackwater at Boosey Creek
Loddon River blue-green algae outbreak
Loddon River blue-green algae outbreak