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How is backflow prevented? An authorised plumber can fit a backflow prevention device to internal plumbing to rectify backflow issues. All water meters have backflow prevention valves installed however other preventative measures may need to be installed. These are determined by whether the backflow prevention device is needed at a fixture (tap), connection within the property or at the property boundary.

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The type of prevention device required is determined at the time a property owner wishes to undertake building or plumbing works that affect TasWater's interests.  They will have to obtain a certificate for certifiable work from TasWater and a condition of that certificate may be the installation by the property owner of a backflow prevention device.  Property owners are required to test the prevention device on a regular basis.

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What is backflow? Backflow is the term used to describe when water within a plumbing system on a property flows in the reverse direction. Backflow can be caused by a combination of factors such as water or other contaminated liquids entering the reticulated water supply,  this can happen when the water supply is turned off to conduct repairs and a reverse pressure occurs allowing contaminated water to enter. Another example is back pressure which can result in contaminated liquid reversing its flow.

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Who is responsible for installing and maintaining prevention devices? All properties connected to either the reticulation or bulk water supply require an appropriate backflow prevention containment device at the property boundary. Ownership of the backflow prevention device, (with exception of water meters) and the associated costs for installing, maintenance, annual testing and administration costs shall be the responsibility of the customer. The device required will be identified by the hazard rating of the processes conducted onsite as as specified below:

Who can I talk to about my specific requirements? Please contact our Development team on 13 6992.  They will only be too happy to provide assistance and advice about your particular requirements.

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TasWater proudly acknowledges the Tasmanian Aboriginal people as the custodians of lutruwita / Tasmania – Aboriginal land, sea and waterways. We pay our deep respects to the Elders past and present and acknowledge today’s Tasmanian Aboriginal community.