Scottish Water says it’s “confident” it has restored drinking water to hundreds of customers in Rosneath, Kilcreggan and Clynder – though it has yet to locate the fault that interrupted supplies to homes in the area on Thursday.

Throughout the course of July 6, customers on the Rosneath peninsula reported no water, loss of pressure or intermittent supplies

Scottish Water said the loss of supply had affected “up to 1,000” customers.

Six tankers were sent to the area to bolster supplies, with the first arriving at around 10pm on Thursday.

The utility firm said that alterations made to the network during Thursday evening meant the tankers were no longer needed, but that they would remain on site as a precautionary measure.

Work continued through the night in a bid to identify the fault, with the company warning that “step-testing” – the taking of pressure tests at various points along the water main – might cause further minor interruptions to supplies for a few minutes at most.

A spokesperson for Scottish Water said: “We are confident that we have restored drinking water to all customers in the affected area, and we have had no customer contact regarding loss of supply since early evening.

“Our operatives are working round-the-clock to locate the fault and we will let customers know if any further work may impact their supply once repairs get under way.

“Our thanks once again for the patience and understanding shown during this incident, and we sincerely apologise for the disruption.”

Any customers who experience further interruption to their supply are being advised to try and run their tap five minutes later, at which point the water should flow.

The spokesperson added: “Once your supply restores, some customers may experience discoloured water.

 “If you experience brown water, we advise to allow your cold-water kitchen tap to run at a reduced pressure until this runs clear. Do not run any other taps or use any water appliances whilst doing so, and follow the same process with any other taps affected once the water is clear from your cold-water kitchen tap.

“If you experience white water, this is air trapped in the supply and will clear within 24/48hrs.

The company says it will provide a further update at 8am on Friday.