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Contingency planning for loss of water supplies

Contingency planning for loss of water supplies. Jim Smith MBCI Resilience Programme Manager. A reminder…. Gloucestershire 2007. Tewkesbury. Cheltenham. Gloucester. Timeline. Sun 22 nd July: Mythe works shut down Tue 24 th July: 140,000 properties without supply

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Contingency planning for loss of water supplies

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  1. Contingency planning for loss of water supplies Jim Smith MBCIResilience Programme Manager

  2. A reminder… • Gloucestershire 2007

  3. Tewkesbury Cheltenham Gloucester

  4. Timeline • Sun 22nd July: Mythe works shut down • Tue 24th July: 140,000 properties without supply • Fri 27th July: Non drinking water supply restored to 10,000 properties • Thu 2nd August: Non drinking water supply restored to entire area • Fri 3rd August: Moved from do not drink to boil water notice • Tue 7th August: Safe to drink notice issued A total of 17 days between the works being shut down and supplies being fully restored

  5. Facts and figures Bottled water: • 150,000 litres supplied 23 July • 3m litres a day available by end 24 July • 15 local distribution centres • 5m litres available at peak Bowsers & tankers: • Over 90 tankers • 1,100 bowsers deployed • Largest number ever used in a single incident in the UK • Average three fills a day • 23,000 water quality tests

  6. How to stop it happening again • Improvements at 6 Water Treatment Works and 73 Borehole Sources based on EA National Flood Risk Assessment • Investment in strengthening the strategic grid • Creation of Alternative Supplies plans

  7. Alternative Supplies plans • 6 sites identified as a single source of supply • Comprehensive plans produced to provide alternative supplies to these areas • Regulatory minimum of 10 litres per head per day, our plans are based around providing 20 litres

  8. Leicester – Melbourne WTW An overview of plan contents

  9. Area affected

  10. How much water is required Melbourne - Volume Requirement 6000000 Deployed via bottles 5000000 4000000 Deployed via bowsers Litres 3000000 Deployed via Tankers with 2000000 Tbars STW requirement (20L) 1000000 0 Regulatory requirement (10L) D-36 D-24 Day 1 Day 2 Day 3 Day 4 Day 5 Period

  11. Where to source it from

  12. Where to deploy bowsers

  13. Where to deploy bottled water

  14. Supporting vulnerable premises • Creation of contingency plans with hospitals and prisons • Tanker resources factored into plans for these sites • Other types of vulnerable premises identified • Provision via bottled water or bowsers

  15. Supporting vulnerable individuals • Register of vulnerable customers • Voluntary registration through our access team • More information at:www.stwater.co.uk/household

  16. Over the course of a year the average Severn Trent customer has an uninterrupted water supply for364 days, 23 hours and 42 minutes

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