The message
from Dave Fawthrop contains these words:

Contamination of water supply would be an easy thing to do and could kill
lots of people. Camelford springs to mind
http://www.waterquality.crc.org.au/hsarch/HS25b.htm
and *that* was a contractor.

Not helped by the "helpline" saying "It's perfectly OK, keep drinking it".

--
Skipweasel
Pay no attention to that man behind the curtain.