The company was prosecuted after the water supply in the Brixham area of Devon was contaminated by the parasite which causes sickness and diarrhoea

The water firm faces a fine after Birxham (pictured) locals were infected with cryptosporidiosis - a waterborne bug, which causes sickness, diarrhoea and stomach cramps.

The water firm faces a fine after Birxham (pictured) locals were infected with cryptosporidiosis - a waterborne bug, which causes sickness, diarrhoea and stomach cramps.