OCEANO COMM SERVICES DIST.
California — Community Water System — PWSID: CA4010005
System Information
| PWSID | CA4010005 |
| System Name | OCEANO COMM SERVICES DIST. |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| 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 | OCEANO |
| ZIP Code | 93445 |
| Address | 1655 Front Street |
| Organization | MARRACCINO, TONY |
| Phone | 805-481-6730 |
Population & Service
| Population Served | 7,601 |
| Service Connections | 2,207 |
Drinking Water Violations (20)
This water system has 20 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2021 | Jul 31, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jul 31, 2021 | Revised Total Coliform Rule |
| Jul 1, 2021 | Jul 31, 2021 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Jul 31, 2021 | Revised Total Coliform Rule |
| Dec 1, 2010 | Dec 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | Total Coliform Rule |
| Dec 1, 2010 | Dec 31, 2010 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2010 | Nitrate Rule |
| Dec 1, 2010 | Dec 31, 2010 | Nitrate | MR | No | No | — | 10 mg/L | — | Resolved | Dec 31, 2010 | Nitrate Rule |
| Dec 1, 2010 | Dec 31, 2010 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2010 | Inorganic Chemicals |
| Dec 1, 2010 | Dec 31, 2010 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2010 | Inorganic Chemicals |
| Dec 1, 2010 | Dec 31, 2010 | Surface Water Treatment Rule | MR | No | No | — | — | — | Resolved | Dec 31, 2010 | Surface Water Treatment Rule |
| Dec 1, 2010 | Dec 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | Total Coliform Rule |
| Dec 1, 2010 | Dec 31, 2010 | Surface Water Treatment Rule | MR | No | No | — | — | — | Resolved | Dec 31, 2010 | Surface Water Treatment Rule |
| Oct 1, 2010 | Dec 31, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2010 | Dec 31, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Dec 31, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2010 | Sep 30, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Sep 30, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2010 | Sep 30, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Sep 30, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2010 | Jun 30, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 30, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2010 | Jun 30, 2010 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Jun 30, 2010 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 1, 2012 | Lead and Copper Rule |
| Oct 1, 2009 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Aug 1, 2012 | Lead and Copper Rule |
| May 1, 2006 | May 31, 2006 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2006 | Total Coliform Rule |
| May 1, 2006 | May 31, 2006 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | May 31, 2006 | Total Coliform 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.