Wa­ter firm’s plan to stop sewage floods

Star Courier (Surrey & Hants) - - NEWS -

FLOOD­ING could be pre­vented at 50 homes near Alder­shot’s Manor Park, Thames Wa­ter en­gi­neers will tell Rush­moor coun­cil­lors.

Alder­shot is the fo­cus of one of five stud­ies be­ing un­der­taken by Thames Wa­ter to find ways to pro­tect more homes from sewer flood­ing.

Rep­re­sen­ta­tives of the util­ity firm will de­liver a pre­sen­ta­tion at a meet­ing of Rush­moor Bor­ough Coun­cil’s en­vi­ron­ment pol­icy com­mit­tee next Tues­day ( Jan 31), ex­plain­ing some of their ideas on how to tackle the prob­lem.

One pro­posed scheme in­volves in­stalling a so- called ‘ sus­tain­able drainage sys­tem’ in Manor Park. Dur­ing heavy rains, this sys­tem would ei­ther al­low ex­cess wa­ter to drain away slowly through nat­u­ral means or tem­po­rar­ily store it.

This would re­duce the vol­ume of wa­ter flow­ing into sew­ers at one time and there­fore re­duce the risk of the sewer net­work back­ing up, which is what causes sewage to flood into prop­er­ties and the en­vi­ron­ment.

Thames Wa­ter es­ti­mates that such a sys­tem in Manor Park could pro­tect around 50 prop­er­ties in Cross­ways, Raglan Close and Pem­bury Place which have all been hit by sewer flood­ing in the past.

A spokesman for the firm said: “At the coun­cil meet­ing, we’ll be pre­sent­ing them with po­ten­tial so­lu­tions in­clud­ing us­ing spe­cial land­scap­ing in Manor Park to tem­po­rar­ily store ex­cess rain­wa­ter and re­lease it into the sewer sys­tem grad­u­ally.

“The prob­lem is ex­ac­er­bated where el­e­vated wa­ter lev­els in the River Black­wa­ter re­strict dis­charge from the net­work.

“A range of op­tions have been in­ves­ti­gated to re­duce the flood­ing in key ar­eas in Alder­shot. Pre­ferred so­lu­tions have been iden­ti­fied and work is un­der way to as­sess fea­si­bil­ity.”

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