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- Create Date June 30, 2026
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Construction Site Dewatering Guidance
Three National Pollutant Discharge Elimination System (NPDES) permits can potentially regulate construction site groundwater discharges in Alameda County. This tip sheet summarizes the conditions triggering each of the permits to guide applicants to the appropriate permits. Project applicants should confirm determinations with the local agency. For projects involving contaminated or potentially contaminated groundwater, project applicants should contact the Regional Water Board. Alternatively, project applicants can work with the local sanitary sewer agency to obtain permission to discharge groundwater to the sanitary sewer system.
