ROHNERT PARK, Calif. (KGO) --Health officials plan to test even more wells in Sonoma County for E.coli.
Two wells in the Canon Manor neighborhood east of Rohnert Park have already tested positive.
County health officials say there are no reports of any sickness.
But now they're expanding their testing to dozens of other wells.
It's unknown if the contamination includes any potentially deadly strains of E.coli.