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Yass Water Supply

Yass water supply sources water from the Yass Dam. Constructed in 1927 with a capacity of 1,125ML, the Dam served the community of Yass until the dam wall was raised 3 metres in 2013 at a cost of $22M, which increased the dam’s capacity to 2,460ML and the service capacity from 7,500 people to 15,000 people.

The villages of Bowning and Binalong were connected to the Yass water supply in 1989. Prior to this date, Bowning did not have a treated water supply and Binalong was supplied via an old railway reticulation system sourced from Illalong Dam.

Climate and Water Quality

The hot dry conditions being experienced throughout NSW continue to affect the quality of the water in the Yass Dam.

With a predicted hot dry summer ahead of us, the ground within the catchment that provides water to the dam is hard, dry and dusty. If it does rain, these initial rainfalls are likely to run off the land surface quickly, carrying with them loose material into the creeks and streams and eventually into the dam itself. Given the relatively small size and shallowness of the dam, this material does not get a chance to settle to the dam floor before it enters the inlet to the Treatment Plant, as happens in large dams like Wyangala and Warrangamba.

Unfortunately, our existing 1990’s Water Treatment Plant was not built to deal with this sudden influx of material in the water, so there is every chance that a rain event following a long dry spell will again effect our water supply from the Yass Dam.

So what is Council doing?

While Council continues to work with State Government agencies and the private sector towards the construction of a new Water Treatment Plant, designed to cater for such events as quickly as it can, the unpredictability of our weather patterns means that the longer we go without consistent rain to soak the surrounding ground, the more likely that a single rain event will affect the supply. In the interim, Council continues to seek short term solutions to this long standing problem until a new Water Treatment Plant is constructed. Until then, we ask for your patience and understanding on this long-standing issue that remains unsolved after nearly 100 years.

What can I do?

There are a number of things that can be done if you experience water discolouration. Please read our FAQ page.

NSW Environment Protection Authority requirements

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While every endeavour has been taken by the Yass Valley Council to ensure that the information on this website is accurate and up to date, Yass Valley Council shall not be liable for any loss suffered through the use, directly or indirectly, of information on this website. Information contained has been assembled in good faith. Some of the information available in this site is from the New Zealand Public domain and supplied by relevant government agencies. Yass Valley Council cannot accept any liability for its accuracy or content. Portions of the Yass Valley Council information and material on this site, including data, pages, documents, online graphics and images are protected by copyright, unless specifically notified to the contrary. Externally sourced information or material is copyright to the respective provider.

© Yass Valley Council - www.yass.nsw.gov.au / +61 2 6226 1477 / Fax: +61 2 6226 2598