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Section 5 protecting drinking water resources from contamination and they avoid costly treatment to remove pollutants. In California, the Drinking Water Source Assessment and Protection (DWSAP) program fulfills these federal mandates. The California State Water Resources Control Board Division of Drinking Water is the primary lead agency for developing and, implementing the DWSAP program and responsible for performing the assessments of existing groundwater sources, OCWD was a contributing, working member of the technical advisory committee convened to assist California Department of Public Health with development of the DWSAP, which was submitted and approved by EPA in 1999, Drinking Water Standards California's Safe Drinking Water Act requires California State Water Resources Contra] Board Division of Drinking Water to administer laws relating to drinking water regulation, including setting and enforcing both Federal and State drinking water standards and administering water quality testing programs. Current drinking water regulations include both primary and secondary standards (California Code of Regulations Title 22) Compliance with primary standards is mandatory, because these standards are based an potential health effects on water users. Secondary standards are those parameters that may adversely affect the aesthetic quality of drinking water, such as taste and odor. These standards are not Federally enforceable, although California State Water Resources Control Board Division of Drinking Water reserves the right to enforce secondary standards when warranted. The primary standards define MCLs that cannot be exceeded by any public or private water system. State law requires California Department Of Public Health to set each MCIL as close to the corresponding Public Health Goal (PHG) as !is economically and technically feasible, placing primary emphasis on the protection of public health. The PHG, as determined by the California Office of Health Hazard Assessment (OEHHA), is the concentration of constituents that do not pose any significant risk to public health, and which contributes to the determination of MCLs. When the economic impact on water Suppliers and consumers proves excessive compared to the reduction in health risk, California State Water Resources Control Board Division of Drinking Water has the authority to set the MCL above the level of the PHG. Additionally, when current testing or treatment technology proves Cannot reliably ensure drinking water contamination levels would be at or below the PHG, California State Water Resources Control Board Division of Drinking Water can set the I above the level of the PHG. Notification Levels are not enforceable standards, but instead serve as advisory or recommended levels. If a constituent is detected above its Notification Level in a drinking water source, Health and Safety Code §116455 requires timely notification of the local governments by Mid Basin Centennial Park �j dn.V\LpI1I Project Final EIR 5-103 g 204