water main break rate continues downward trend
Far more than other urban areas in Australia, Adelaide’s reactive clay soils combined with an arid climate, means dealing with the changes in soil, topography and weather is an unavoidable part of life in South Australia. This is no exception when managing underground water mains. At SA Water, smart investment and an ongoing commitment to maintaining a reliable supply of water for our customers is helping to combat these natural influences and reduce the frequency and impact of water main breaks and leaks on the South Australian community. In 2021, South Australia recorded the lowest number of water main incidents for the past four years.
Last year, 3614 water main leaks and breaks were reported across SA Water’s 27,000-kilometre network (1833 in metropolitan Adelaide and 1781 in regional areas), compared to 3749 in 2020. These figures include everything from major breaks to minor pipe leaks, damp patches and trickles on the road. SA Water General Manager Sustainable Infrastructure Amanda Lewry said in Adelaide in particular, reactive clay soils moving during the transition from hot and dry seasons to wet and cool and the stress this causes on underground pressurised water pipes remains the number one cause of water main incidents.
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