Thousands more Scots residents have been warned to boil their tap water after health chiefs revealed further homes had been affected by a parasite scare.
More than 4,000 homes in west central Scotland have been hit by the cryptosporidium parasite.
The water scare has already led to 140,000 people in Glasgow taking precautions.
Health chiefs have revealed both the Whitecrook and Linnvale areas of Clydebank received their supply from the same Mugdock Reservoir in Milngavie, East Dunbartonshire.
Water bosses have been accused of keeping 140,000 people in Glasgow in the dark for more than 24 hours about the discovery of a parasite in the supplies.
A spokesman for Greater Glasgow NHS Board tonight said it is "unlikely" any other areas would be affected by the parasite.
Scottish Water insisted its staff had acted with the "utmost caution" not to alarm people living in areas of Glasgow where water supplies have been affected by the cryptosporidium parasite.
It said fears about the water supply were raised on Friday when high levels of the parasite were found in tests and GPs were informed to look out for a possible increase patients with problems including stomach cramps, mild flu and diarrhoea. However, the outbreak was not made public until Saturday when water bosses realised the parasite levels had increased further.
It is thought the recent heavy rains might have washed materials from nearby hills and fields, including animal faeces, into the reservoir.
A detailed breakdown of the areas and districts affected are as follows: Linnvale, Whitecrook, Yoker, Old Drumchapel, Drumchapel, Blairdardie, Blawarthill, Scotstounhill, Knightswood, Canniesburn, Westerton, Bearsden, Netherton, Temple, Anniesland, Jordanhill, Hyndland, Partick Hill, Partick, Kelvingrove, Hillhead, Cranstonhill, Anderston, Plantation, Kinning Park, Cessnock, Kingston, Tradeston, Townhead, City Centre, Charing Cross, Finnieston, Kelvin Hall.