Water: SDWIS Federal
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Science & TechnologyApplications & DatabasesProgram DatabasesDrinking Water Data and DatabasesSafe Drinking Water Information System
Science & TechnologyApplications & DatabasesProgram DatabasesDrinking Water Data and DatabasesSafe Drinking Water Information SystemSafe Drinking Water Information System
EPA’s Safe Drinking Water Information System (SDWIS) databases store information about drinking water. The federal version (SDWIS/FED) stores the information EPA needs to monitor approximately 156,000 public water systems. The state version (SDWIS/STATE) is a database designed to help states run their drinking water programs.
- Basic Information
- Drinking Water Data Managers’ Information - The following links are intended for users of EPA’s drinking water data management systems.
- Data Reliability - EPA routinely evaluates state drinking water programs by conducting data verification audits, which evaluate state compliance decisions and reporting to SDWIS/FED.