Between January and April of 2000, the lab which tests Walkerton's water repeatedly detects coliform bacteria - an indication that surface water is getting into the water supply.
(surface water; is getting; into the water supply) (the lab which tests Walkerton's water; detects; coliform bacteria; T:Between January and April of 2000; T:repeatedly) Context(the lab which tests Walkerton 's water detects,List([35, 91))):(the lab; tests; Walkerton's water)
the lab which tests Walkerton 's water detects,List([35, 91))
surface water the lab which tests Walkerton's water the lab
is getting detects tests
into the water supply
coliform bacteria T:Between January and April of 2000 T:repeatedly
Walkerton's water