Thousands of homes have had their boiling water restrictions lifted after a water tank infected with cryptosporidium was drained and cleaned, South West Water has said.
About 16,000 households in the Brixham area of Devon were told to boil their drinking water following 46 confirmed cases of the disease.
On Saturday afternoon South West Water lifted the boiling restrictions for 14,500 homes after water quality monitoring results found no traces of cryptosporidium in the Alston supply area.
Cryptosporidiosis is caused by a tiny parasite and can lead to vomiting, stomach cramps and watery diarrhoea lasting about two weeks.
South West Water believes the parasite probably entered supplies through a damaged pipe in a field containing animal faeces.
A contaminated water tank at Hillhead reservoir, where cryptosporidium was detected, was drained overnight and “thoroughly cleaned” on Saturday, South West Water said.
One local resident said she knew of only four houses out of 21 in Raddicombe Close, on the outskirts of Brixham, which have not had at least one person fall ill with cryptosporidiosis.
The local MP has warned “heads are going to roll” over the incident.
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Tory MP Anthony Mangnall, whose constituency includes Brixham, told LBC: “This is such a serious matter that yes, I think heads are going to roll over this.”
He claimed the supplier had been too slow to issue its safety alert.
Mr Mangnall said: “From starting this week with a denial from South West Water that it was anything to do with them, delaying the fact that the boil water notice came in – meaning thousands of people used the water network – to then issuing it on Wednesday, and there are a lot of people who are very ill.”
He called it an “absolutely disastrous week” and said locals were furious.
South West Water has said it’s “deeply sorry” and that it’s been “working tirelessly” to identify the source of the problem and fix it.
Liberal Democrat leader Sir Ed Davey accused the government of not doing enough to hold water companies to account.
He told Sky News the firms were “putting profit over the environment, over public health” after multiple cases of sewage being released into rivers and seas.
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