San Diego County residents launch second suit over alleged sewage treatment plant failures

Residents of Imperial Beach in southern San Diego County filed a lawsuit Tuesday against the operators of an international wastewater treatment plant — alleging that the site has failed to contain a cross-border crisis that has long contaminated their community.

The plaintiffs said they are seeking to hold the plant’s managers accountable for severe environmental and public health effects that have resulted from an influx of untreated sewage, heavy metals and other toxic chemicals.

Imperial Beach...