Fluoride overdose incident

There has been another fluoride incident just come to light this week - too much fluoride was put into the water supply after a new dosing system at Severn Trent Water failed. The Drinking Water Inspectorate said a fault happened at the pumping station which supplies 29,000 homes between Bridgnorth and Wolverhampton last June - read report at:
http://news.bbc.co.uk/1/hi/england/8175856.stm
and
http://www.dwi.gov.uk/pubs/annrep08/CIR%2008%20Central%20Region.pdf