State steps in as bacteria levels linger at Tiburon beaches

State Water Quality Control Board officials say they will use the office’s regulatory powers to “compel” the Sewerage Agency of Southern Marin, the Richardson Bay Sanitary District and the town of Tiburon to pinpoint the source of unsafe bacteria levels that have lingered in the town’s shoreline water for more than two months. William Johnson, chief of the national pollutant discharge elimination system for the wastewater and enforcement division of the state water quality board, said the board has taken over supervision of the investigation and plans to contact the sewerage agency, the sanitary district and the town “so these parties understand they need to track down the source of the bac-teria and identify corrective actions,” Johnson said.

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