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Set by the California Department of Public Health in 1989, the maximum contaminant level for nitrates, in CCR §63341, is 45 milligrams per liter (mg/L) for nitrate as NO3 (equivalent to 10 mg/L for nitrate as nitrogen or “N”); 10 mg/L for nitrate plus nitrite as N; and 1 mg/L for nitrite as N. Currently, there is a secondary maximum ...
Maximum contaminant levels (MCLs) are standards that are set by the United States Environmental Protection Agency (EPA) for drinking water quality. [1] [2] An MCL is the legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act (SDWA).
Drinking water quality standards describes the quality parameters set for drinking water. Water may contain many harmful constituents, yet there are no universally recognized and accepted international standards for drinking water. Even where standards do exist, the permitted concentration of individual constituents may vary by as much as ten ...
In California, the State Water Resources Control Board is responsible for enforcing regulations that ensure systems meet federal and state drinking water standards.
The idea of safe drinking water is the basis for the cities implementing their own clean water programs. For example, Oceanside Clean Water Program is set up to improve the water quality in their local creeks, rivers and oceans and to keep in accordance with the state and regional environmental regulations.
California water officials have estimated that the total costs of drinking water solutions for communities statewide amount to $11.5 billion over the next five years.
California has set a limit for the toxic heavy metal hexavalent chromium in drinking water. Advocates have called for a stricter limit, warning of health risks.
[16] [17] There are no federal regulations covering private drinking water wells, although some state and local governments have issued rules for these wells. [18] [19] EPA enters into primary enforcement authority (primacy) agreements with state governments, so in most states EPA does not directly enforce the SDWA. State rules can be different ...