The hole in Kilbarchan has been giving off an awful odour and is surrounded by bright green algae.
More than 200 million litres of extra water is being produced nationwide every day to maintain normal supplies.
Scottish Water says thousands of samples will be taken from taps at houses randomly selected by postcode.
After a forklift punctured a container, unaware employees sent the spill into the River Eden in Fife.
For years, excrement and sanitary towels have been discovered in the Bridge of Weir street.
The Katrine Aqueduct was built in the Victorian era to provide the people of Glasgow with their first proper water supply.
Ice at Loch Thom hit water supplies in Inverclyde.
Engineers reconfigured the network to supply stored drinking water to most of the customers in the area but this ran out.
Scottish Water issues apology after households in Fife report difficulties with reduced pressure and discolouration.
The duck and her young chicks were spotted walking along George Street in Edinburgh.