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 Fri 27 th July:Non drinking water supply restored to 10,000 properties Thu 2 nd 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

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

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

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

Leicester – Melbourne WTW An overview of plan contents

Area affected

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

Where to source it from

Where to deploy bowsers

Where to deploy bottled water

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

Supporting vulnerable individuals Register of vulnerable customers Voluntary registration through our access team More information at:

Over the course of a year the average Severn Trent customer has an uninterrupted water supply for 364 days, 23 hours and 42 minutes