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State Water Resources Control Board <br /> Division of Water Quality <br /> GAMA Program <br /> REGULATORY AND WATER QUALITY LEVELS <br /> DBCP <br /> Type Agency Concentration <br /> Federal MCL US EPA 2 0.2 /L <br /> Federal Maximum Contaminant Level 0 pg/L <br /> Goal MCLG <br /> State MCL SWRCB-DDW3 0.2 p /L <br /> Detection Limit for Purposes of 0.01 pg/L <br /> Reporting DLR <br /> Others: <br /> Public Health Goal (PHG) OEHHA4 0.0017 pg/L <br /> These levels generally relate to drinking water. Other water quality levels may exist. For further <br /> information, see A Compilation of Water Quality Goals (Marshack, 2016). <br /> 2US EPA- US Environmental Protection Agency <br /> 3SWRCB-DDW - State Water Resources Control Board-Division of Drinking Water — formerly the <br /> California Department of Public Health (CDPH) <br /> 4OEHHA-Office of Environmental Health Hazard Assessment <br /> SUMMARY OF DETECTIONS IN PUBLIC WATER WELLS' <br /> Detection Type Number of Groundwater Wells <br /> Number of active and standby public <br /> water wells6 with DBCP concentrations > 156 of approximately 12,337 tested <br /> 0.2 /L <br /> Top 3 counties with active and standby Fresno (63), San Joaquin (23) and San <br /> public water wells with DBCP <br /> concentrations > 0.2 /L Bernardino (19) <br /> 5Based on 2006-2016 public standby and active well (groundwater sources) data collected by the <br /> SWRCB-DDW. <br /> 6Water from active and standby wells is treated to prevent exposure to chemical concentrations <br /> above the MCLs. Statewide data from private domestic wells and wells with less than 15 service <br /> connections are not available. <br /> Revised: July, 2016 <br />