Pennon was prosecuted earlier this month at Exeter Magistrates’ Court for supplying water unfit for human consumption.

Pennon was prosecuted earlier this month at Exeter Magistrates’ Court for supplying water unfit for human consumption.

Residents and businesses were left without water after cryptosporidium contamination in its water supply

Susan Davy was chief executive when South West Water's failure to inspect a reservoir valve for 13 years allowed cryptosporidium to infect the tap water of more than 16,000 homes…