Skip to content

Drinking Water Regulations

State LawPrimary RegulationsSecondary RegulationsGrants and Loans

Laws, Regulations, & Standards

water dropSafe Drinking Water Act (Federal Law)

    • A federal law which ensures safe drinking water for AmericansFlow Chart of Regulations
    • Under this law the Environmental Protection Agency (EPA) sets standards for water quality of drinking water and oversees the states, localities, and water suppliers who implement those standards.
    • EPA sets standards for approximately 90 contaminants in drinking water


water dropState Safe Drinking Water Act (State Law)

  • South Carolina state law that ensures safe drinking water for the citizens of South Carolina.

State Primary Drinking Water Regulations

  • South Carolina State Regulations that implement and enforce the State Safe Drinking Water Act.


water dropNational Primary Drinking Water Regulations

    • EPA requires public water systems to meet these standards.
    • For a list of contaminants and their maximum contaminant levels (MCL), visit EPA's Drinking Water Contaminants Web site.
      • Maximum Contaminant Level (MCL) is the highest level of a contaminant that is allowed in drinking water.


water dropNational Secondary Drinking Water Regulations (NSDWRs)

    • NSDWRs are guidelines for 15 contaminants that may cause cosmetic or aesthetic effects in drinking water (i.e. skin or tooth discoloration, taste, odor, etc.), but pose no known health risk.
    • The Environmental Protection Agency (EPA) recommends these secondary standards to public water systems, but does not require water systems to comply.
    • States may choose to adopt secondary standards as enforceable standards.
    • For more information, visit EPA's Secondary Drinking Water Regulations Web Site


Return to Top


Drinking Water Grants & Loans

water dropDrinking Water State Revolving Fund (SRF)

    • SRF funds are loans to assist public water systems with infrastructure improvements.
    • EPA awards these grants to states to establish this program.
    • For more information, visit DHEC's SRF Web Site or EPA's SRF Web Site.


water dropFluoridation Grant Program

    • Grants to public water systems for assistance in implementing drinking water fluoridation.
    • These are federal grants administered by the SC Department of Health and Environmental Control.
    • No cash or in-kind matching funds are required from the water system.
    • For more information, call (803) 898-4214