Presentation title - Affinity Water

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Performance in 2008Notifiable Events& IncidentsDate Event Cause & Effect14/11/08 Egham & Iver WTWs Detection of Metaldehyde abovePCV31/12/08 Iver WTW Aeration of water supplied fromIver WTW due to malfunction of asurge vessel
<strong>Water</strong> Quality 2008EmergingIssuesMetaldehyde:Molluscicide, commonly produced as pellets, which is used toattract and kill slugs and snailsHistorically there has been no routine monitoring of this pesticidedue to the lack of a reliable analytical method – this has recentlybecome availableFollowing reports of detection of metaldehyde by other watercompanies monitoring undertaken in April & May 2008 whichconfirmed there were no exceedences of the 0.1µg/l PCV intreated water.Metaldehyde was identified in some of these sources & it wasrecognised that further monitoring would be required following theautumn application period
Page 1 and 2: Water Quality Performance 2008 &Rev
Page 3 and 4: Performance in 2008SamplingRoutine
Page 5: Performance in 2008Notifiable Event
Page 9: Water Quality 2008EmergingIssuesMet

Presentation title - Affinity Water

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