HS2 moves to reassure on water supplies after concerns raised over Chilterns tunnelling

By Tom Lowe2021-06-09T05:00:00

Railway has spent £100m on adding filters and pumps to local pumping stations

HS2 teams digging the 16km tunnels beneath the Chiltern Hills have the “right tools for the job” to stop water supplies being contaminated amid concern from local groups, the railway’s senior project manager has said.

Mark Clapp said that “a lot of science” has gone into preventing water supplies being impacted by the risk of chalk dust leaking into underground aquifers during the works, which are being dug by the biggest tunnel boring machines ever used in the UK.

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