A June quarterly monitoring report from a Department of Toxic Substance Control order for the Saugus Industrial Center, former home of the Keysor-Century Corp., revealed groundwater contamination levels many times above the state’s limits as cleanup continues and plans for nearby properties are filed at City Hall. A Santa Clarita Valley Water Agency spokesman said Thursday the reports are from monitoring wells and not from any sources in circulation for customers. Water-contamination concerns in that area are expected to cost tens of millions of dollars for the agency for years to come, according to officials in court records and past statements. … The process, which began a decade ago, involves the injection of emulsified vegetable oil into the wells as part of a complicated process to “promote anaerobic biodegradation of volatile organic compounds in saturated soils and groundwater,” according to (the) report.

Other water contamination news:

• Los Gatan (Los Gatos, Calif.): Opinion: Tackling emerging contaminants in drinking water