BOURNEMOUTH water provider Sembcorp is being prosecuted in relation to allegations a poisonous parasite was found in the local water supply.

A hearing will be held at Bournemouth Magistrates’ Court on March 25, where it is understood Sembcorp will face two charges under the Water Industry Act 1991.

The charges relate to the alleged discovery of low levels of cryptosporidium in the treated drinking water at the Alderney Water Treatment Works in May 2013.

Cryptosporidium is a microscopic organism that can be present in water before treatment and which can cause gastrointestinal illness.

Young children are most likely to become infected and symptoms can be very severe in people whose immune system is not working properly.

The Drinking Water Inspectorate (DWI), which is the independent regulator of drinking water in England and Wales, has been carrying out an investigation and a DWI spokes-person confirmed this had resulted in criminal charges but said they could not provide any further information ahead of the court case.

Roger Harrington, managing director of Sembcorp Bournemouth Water, which is based at Francis Avenue in Bournemouth, said: “In view of the impending court case I am unable at this stage to comment in detail.

“However, I can confirm that since May 2013, when the matter under investigation occurred, we have implemented a range of enhanced protection measures.

“These include a new £3.5million ultraviolet (UV) plant at our Alderney water treatment works.

“The use of ultraviolet will complement the current chlorine-based disinfection process, improve disinfection and reduce chemical usage.

“Ultraviolet disinfection will completely eliminate any risk from cryptosporidium."