Nitrate contamination spreading in California communities

The water supply of more than two million Californians has been exposed to harmful levels of nitrates over the past 15 years – a time marked by lax regulatory efforts to contain the colorless and odorless contaminant. First in a two-part series produced in collaboration with California Watch and KQED Radio.

http://www.californiawatch.org/nitrate-contamination-spreading-california-communities