REPORT: Groundwater contamination widespread
[link to www.pe.com]

[snip]

The report by the Groundwater Ambient Monitoring and Assessment Program found 680 community water systems in the state relied on contaminated groundwater sources from 2002 to 2010. Most agencies treated or blended the raw water with cleaner sources to meet health standards before serving it to customers, said John Borkovich, the program manager.

However, 265 systems statewide delivered unsafe water to taps during the eight-year period, according to the report. Ten of those were in San Bernardino County, including East Valley Water District in Highland; nine were in Riverside County, including the cities of Corona and Norco and Elsinore Valley Municipal Water Department. Operators of the affected systems have secured funding to remedy the problems, the report says.