United Utilities could soon lift the boil water notice across Preston and Lancashire.

Gary Dixon, in a video released by the company, explains the levels of cryptosporidium in the water is down to a “minute level”.

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He said: “We’ve seen in the past few days those levels of cyrpto coming down now to a very minute trace.

“We’re absolutely confident in the action we’re taken we’ll be able to lift this boil water notice soon.”

He said they were continuing to alert customers about not drinking the water, sending emails, text messages and leaflet drops to customers within the area affected.

Engineers say the water at the Franklaw treatment plant, near Preston, where the cryptosporidium was first identified, has been showing as clear in recent tests.

The boil water warning has been in place since the afternoon of Thursday 6 August.