22 cases of cryptosporidium have been confirmed in Brixham
The chief executive officer of South West Water has issued a message to residents in South Devon apologising for the water which has been contaminated there.
Traces of the parasite cryptosporidium have been discovered, which causes diarrhoea and vomiting symptoms if ingested.
Susan Davy says recent tests showed water leaving the company's treatment works was clear, but small traces of cryptosporidium were detected in the Hillhead area of Brixham in the early hours of Wednesday morning.
Since Wednesday, ground technicians gave been working to identify the source of the problem and find a resolution.
In a message to residents, Susan Davy said: "I understand the significant impact the boil water notice has had on daily life. In recognition of this burden, our compensation payment will be increased to £115. This payment will be made automatically, where we have direct debit details, or applied as a credit to your next water bill, where we do not. You do not need to take any action.
"To those in the affected area and our customers across the South West, I am truly sorry for the disruption and wider anxiety this has caused. While incidents like these are thankfully very rare, our customers expect a safe, clean, and reliable source of drinking water. I know on this occasion we have fallen significantly short of what you expect of us."
Updates will be provided on South West Water's Facebook page and website.