PIONEER ELEMENTARY SCHOOL
California - Non-Transient Non-Community - PWSID: CA0900111
System Information
| PWSID | CA0900111 |
| System Name | PIONEER ELEMENTARY SCHOOL |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 09 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Mar 22, 1979 |
| Last Reported | Mar 20, 2026 |
Location & Contact
| State | California |
| City | SOMERSET |
| ZIP Code | 95684 |
| Address | 6862 MT AUKUM RD |
| Organization | GARRETT, CHRISTOPHER |
| Phone | 530-620-3556 |
Population & Service
| Population Served | 227 |
| Service Connections | 19 |
Drinking Water Violations (51)
This water system has 51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 17, 2024 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Oct 17, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Jan 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Dec 10, 2024 | - | |
| Jan 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Dec 10, 2024 | - | |
| Oct 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Oct 20, 2023 | - | |
| Oct 1, 2022 | - | MR | No | No | - | TT | - | Resolved | Oct 20, 2023 | - | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2022 | - | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Dec 7, 2022 | - | |
| Jul 1, 2022 | - | Other | No | No | - | - | - | Resolved | Dec 7, 2022 | - | |
| Oct 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Oct 20, 2023 | - | |
| Oct 1, 2021 | - | MR | No | No | - | TT | - | Resolved | Oct 20, 2023 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0004 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.001 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.007 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.00000003 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.00005 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0005 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.02 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.04 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.006 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.003 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.05 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.04 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.7 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.004 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.003 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.001 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | - | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.4 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.0002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2019 | Dec 31, 2021 | MR | No | Yes | - | 0.5 mg/L | - | Archived | Dec 31, 2021 | - | |
| Jan 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 27, 2013 | - | |
| Jan 1, 2012 | - | MR | No | No | - | TT | - | Resolved | Sep 27, 2013 | - | |
| Dec 1, 2008 | Dec 31, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2008 | - | |
| Dec 1, 2008 | Dec 31, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2008 | - | |
| Dec 1, 2008 | Dec 31, 2008 | MCL | Yes | No | - | 5% of samples | - | Resolved | Dec 31, 2008 | - | |
| Oct 1, 1982 | Oct 31, 1982 | Other | No | No | - | - | - | Archived | Oct 31, 1982 | - |
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.