Tas water the other side of the flush

Tas water the other side of the flush

• 1.
  TasWater - Theother side of the flush Shellfish Futures October 2013, Bruny Island
• 2.
  Introduction to TasWater •Where we came from. 31. – When three water corps love each other very much...they have a special cuddle • Scope and scale – Statewide coverage, generates efficiencies. – Strong environmental & public health focus – 5 dedicated EPA officers. • Lots of assets – Over 150 STPs – Thousands of km of sewer – Over 720 pump stations
• 3.
  TasWater Challenges 20 • Spills –99.98% success rate – 0.02% is a problem 80 Wet Weather Spills (>1 in 5 year rainfall event) 18 70 Wet Weather Spills (≤1 in 5 year rainfall event) 16 60 Dry Weather Spills 14 • Fees and charges pay for clean water = safe shellfish. 40 10 8 Total FY12-13 30 6 20 4 10 2 • We are not the ONLY shellfish risk! Total FY11-12 0 0 Jul 12 Aug 12 Sep 12 Oct 12 Nov 12 Dec 12 Jan 13 Feb 13 Mar 13 Apr 13 May 13 Jun 13 Cumultive Spills • Pressure on revenue. 50 12 Monthly Spills • Non Compliant STPs
• 4.
  Recent Incidents • Significantperceived damage to Tasmania’s clean green image. • Pittwater – Break in rising main – No proven contamination • Dunalley – Break in private line under canal – Definite contamination Hundreds ill.
• 5.
  Initial Response –Don’t panic! • Incident Management • CEO and Chair Meetings with industry & Deputy premier • Sydney trip June 2013 • Strategy Formation
• 6.
  Chairman - StrategicFocus on shellfish 1. No product withdrawals – Dry weather spills – Public Health focus 2. Consider the economic impact of spills – Wet weather spills – Asset upgrades where justified
• 7.
  TasWater - StrongScientific Approach • Partnership with CSIRO – Award winning R&D – Several shellfish focussed projects 2013-15. • Dedicated “Product Quality” team – Covers wastewater quality and environmental impact SUNA 2 1.5 1 0.5 0 -0.5 11AM 12PM 1PM 2PM 3PM 2PM 3PM 2PM 3PM CSIRO FIA 2 1.5 1 0.5 • Science and fact will inform action 0 -0.5 11AM 12PM 1PM Monash FIA 2 1.5 1 0.5 0 -0.5 11AM 12PM 1PM
• 8.
  Key Issues. • Stateof the assets – Knowing what might spill • Monitoring – Knowing when we spill • Pollutant fate and transport – Knowing where it goes. • Incident management – The right people in the know
• 9.
  Key Actions –Across the board • Hydrodynamic and Dye testing – Aids decision making • Asset risk management – Likelihood and consequence • Alarming and spill notification – Pressure alarming – Updated SCADA • Asset upgrades – Rising main renewals • Working with stakeholders – Industry, EHOs, TSQAP
• 10.
  TasWater/CSIRO Partnership • Pittwaterhydrodynamic model – Gathering baseline data 2013 – Building model 2014 – Confirm with dye tests • Faecal marker toolkit – Drinking water approach – Looking at chemical and biological markers • Real time nutrient monitoring? – Algal blooms????
• 11.
  Pittwater • McKinley StRising Main renewal • Pressure sensing in rising mains • Asset condition and risk survey • Hydrodynamic modelling and dye testing
• 12.
  Dunalley • Environmental investigation – LagoonsOK – Reuse feasibility • • • • Asset survey Pressure sensing Dye testing Boomer bay extension
• 13.
  St Helens • Upgradeof key pump stations – 5 upgrades in progress • Hydrodynamic modelling of Georges Bay
• 14.
  The future? • Nodry weather spills in high sensitivity areas • Reduced wet weather spills to minimise the length of rain induced shutdowns • Improved monitoring and measurement techniques • Work closely with regulators and stakeholders • Better environments, better communities
• 15.
  Questions ?