SAN LUIS OBISPO WATER DEPARTMENT
California — Community Water System — PWSID: CA4010009
System Information
| PWSID | CA4010009 |
| System Name | SAN LUIS OBISPO WATER DEPARTMENT |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | California |
| City | SAN LUIS OBISPO |
| ZIP Code | 93401-2710 |
| Address | 879 Morro Street |
| Organization | BOERMAN, MYCHAL |
| Phone | 805-781-7237 |
Population & Service
| Population Served | 47,788 |
| Service Connections | 17,012 |
Drinking Water Violations (2)
This water system has 2 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2015 | Jun 30, 2015 | TTHM | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2015 | Jun 30, 2015 | TTHM | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Resolved | Jun 30, 2015 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.