http://shet.news/ho4w7 Copied! SCOTTISH Water has apologised to customers in Lerwick who have experienced discoloured water as a result of a fault on the local network on Friday. The service provider said it wanted to reassure customers that their water remains safe to drink and use normally. A spokesman said a fault with a pressure-regulating valve resulted in higher than normal flows through part of the local network. 7 of 13Adverts This disturbed natural sediment within the pipes, resulting in yellowish and brownish tinges to the water as it came out of residents’ taps on Friday morning. The spokesman said: “We would like to apologise to customers in Lerwick who experienced discoloured water following a fault with a valve on the local water network earlier today.