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Drinking Water Quality Report 2013-14

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Drinking Water Quality Report 2013-14 SA Water Drinking Water Quality Report 2013-14 Government of South Australia 4 / A Message from our Chief Executive 5 / SA Health Statement 5 / Economic Regulation 6 / Safe Drinking Water Legislation 7 / The Adelaide Services Alliance 8 / Drinking Water Quality Management 13 / Our Water Supply Systems 13 / Our water supply sources 15 / Water treatment 20 / Country drinking water supply system sources and treatment 22 / Metropolitan Adelaide water treatment plant sources 23 / Metropolitan Adelaide water quality systems and treatment 24 / Drinking water supply systems and towns/suburbs supplied 27 / Managing our water supplies 29 / Water Quality 2013–14 29 / Catchments, land management and source water 33 / Water treatment and distribution 34 / Water quality monitoring and testing 35 / Drinking water quality and performance 37 / Customer satisfaction 38 / Incident management 40 / Research and Innovation 42 / Employee Awareness and Training 44 / Glossary of Water Quality Terminology 48 / 2013–14 Water Quality Data This report covers the period of 1 July 2013 to 30 June 2014. Total water usage (raw water for treatment) 2013-14 213 926 ML Population served Highlights 1 173 000 in metropolitan Adelaide through 9 190 km of water mains Raw water sources Number of routine 432 000 in country areas through % of total water supplied water quality tests 17 582 km of water mains. carried out River Murray: 36% 295 519 (total) Drinking water quality and performance Surface water: 30% 49 529 (metropolitan Adelaide) Seawater: 28% 43 862 of the routine 245 990 samples collected from our drinking Groundwater: 6% (country) water supplies throughout South Australia were used to determine health-related compliance. Incident Total number of routine Achieved 99.81% compliance management samples collected with the Australian Drinking Water Guidelines (ADWG 2011) (Includes samples for Achieved a significant decrease in health-related parameters in health-related compliance) incident notifications compared metropolitan Adelaide and with 2012–13. 99.85% in country areas. 103 884 (total) Incident response index exceeded E. coli compliance at customer the 83% target by 11%, 13 291 (metropolitan Adelaide) taps was 99.94% in achieving 94%. metropolitan Adelaide and For details see pages 38-39. 90 593 (country) 99.99% in country areas. 4 SA WATER DRINKING WATER QUALITY REPORT 2013-14 A Message from our Chief Executive The outcomes showcased within this It’s not just in the R&I arena where Drinking Water Quality Report highlight SA Water has been rewarded for its the advances SA Water continues to commitment to water quality in 2013-14, make. Our achievements in water winning multiple awards for our delivery treatment, testing, infrastructure, systems. In September, the Adelaide training and research demonstrate Desalination Plant (ADP) was awarded SA Water’s commitment to improving the Gold in the International Project South Australia’s drinking water quality. Management Association (IPMA)’s Project SA Water’s work begins as soon as Excellence in Mega-Sized Projects award. water arrives in our catchments. At a New Orleans event in October, To safeguard these water sources, the ADP won the Project Management we collaborate with natural resources Institute (PMI) Project of the Year Award, management agencies to effectively recognising the plant’s world-class status. supervise land use around catchment Designed to ensure water security across metropolitan Adelaide, SA Water’s North John Ringham areas. In 2013-14, flow meters were South Interconnection System Project Chief Executive trialled at specific reservoirs to track water with the potential to carry catchment- (NSISP) also won an Australian Institute derived pollutants. Results of these of Project Management award in Filling a glass of water from trials have assisted in the preparation October 2013. the tap might be a simple act, of strategies to lower catchment risks. SA Water’s 2013-14 business but delivering our customers Upgrades to water treatment plants transformation process has seen us a continuous, quality supply of across the state have assisted in working towards greater efficiencies water is much more complex. minimising water quality issues. Changes across our organisation, but one thing Our staff, infrastructure and to filters and filter control systems at hasn’t changed: we are committed to resources are part of the a number of plants have significantly delivering safe, quality drinking water to process from catchment to reduced turbidity incidents. our customers across South Australia. This report showcases the results of this tap, delivering more than The past financial year has seen commitment. 184 000 megalitres of water SA Water’s Research and Innovation I hope you enjoy reading the report and to customers every year. (R&I) group working on new water quality strategies, technologies and welcome your feedback. Please email inter-organisation alliances. R&I’s annual [email protected] or forum once again drew representatives phone us on 1300 650 950. from various government agencies, water industry organisations and water utilities across Australia, with delegates impressed by SA Water’s achievements. John Ringham Chief Executive 5 SA Health Statement Drinking water provided to The number of incidents reported and appropriate preventive measures the public by SA Water in the by SA Water during the 2013–14 were implemented. 2013–14 reporting period was financial year was significantly lower SA Water collected a total of 43 862 safe. Operation of the interagency than the previous year. As a result samples from drinking water supplies Water/Wastewater Incident of strategic upgrades to filters and in the reporting period to test for filter control systems at a number of Notification and Communication health-related compliance. Compliance water treatment plants, the number of with the Australian Drinking Water Protocol was maintained turbidity incidents reduced significantly. Guidelines (ADWG 2011) for E. coli was successfully throughout the Notifications due to Cryptosporidium achieved in 99.94% of metropolitan 2013–14 period. None of and Giardia detection also decreased Adelaide samples and 99.99% of the incidents reported were as a result of the optimisation of country samples. Compliance with the considered to represent a risk monitoring procedures. In addition, ADWG for health-related parameters to public health. the revision of incident criteria was 99.81% for metropolitan systems within the protocol also resulted in and 99.85% for country areas. a decrease in incidents. SA Water’s SA Water has met all obligations under water quality incidents were reported in the Safe Drinking Water Act 2011 and a timely and appropriate manner Safe Drinking Water Regulations 2012. Economic Regulation On 1 January 2013, the Essential SA Water was issued a Retail Licence The revenue earned from these Services Commission of South on 1 January 2013. SA Water services enables SA Water to operate Australia (ESCOSA) was appointed changed its business to ensure it could and invest in assets that supply quality the economic regulator of water comply with these new regulatory services to our customers. requirements while continuing to and sewerage retail services SA Water’s health and environmental deliver the high quality of service in South Australia. ESCOSA’s requirements are still set by SA Health expected by its customers. and the Environment Protection primary objective is to protect ESCOSA made its first revenue Authority respectively. SA Water the long-term interests of determination for SA Water in May continues to comply with these South Australian consumers 2013, setting the maximum allowed requirements to ensure delivery of with respect to the price, quality revenues for drinking water and high quality water and sewerage and reliability of water and sewerage retail services for the services to the South Australian sewerage retail services. period 1 July 2013 to 30 June 2016. public. 6 SA WATER DRINKING WATER QUALITY REPORT 2013-14 Safe Drinking Water Legislation South Australia’s Safe Drinking • Audits and inspections to determine At SA Water, our approach to Water Act 2011 came into effect compliance with the Act managing drinking water quality on 1 March 2013. Transitional • Use of National Association of through our Drinking Water Quality provisions in the Act for Testing Authorities (NATA) accredited Management System (DWQMS) is based on the ADWG (2011) existing drinking water providers, laboratories for sample testing Framework for Management of • Reporting of water quality test including SA Water, ended on Drinking Water Quality. This means results to SA Health and providing 1 March 2014. SA Water already satisfies most of consumers with drinking water quality the requirements outlined in the Safe information. The Act provides the regulatory Drinking Water Act. Details of key framework for drinking water providers components are outlined in this report, in South Australia and is administered SA Water registered its drinking water which in itself addresses one of the primarily by SA Health with assistance supply systems in May 2013, within requirements of the Act – to report from local government. Provisions in the required registration period. As results and provide consumers with the Act are underpinned by the ADWG of 1 March 2014, all drinking water drinking water quality information. (2011) and stipulate requirements for providers are required to have a Further information on the Safe drinking
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