MT TERRACE MHP
California - Community Water System - PWSID: OR4105364
System Information
| PWSID | OR4105364 |
| System Name | MT TERRACE MHP |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Aug 29, 1989 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | California |
| City | EAST VALE |
| ZIP Code | 92880 |
| Address | 5617 ASHWELL CT |
| Organization | MT TERRACE MHP |
| Phone | 909-226-2632 |
Population & Service
| Population Served | 60 |
| Service Connections | 25 |
Drinking Water Violations (714)
This water system has 714 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 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 0.010 mg/L | - | Archived | Dec 31, 2025 | - | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2025 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2024 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2024 | - | |
| Jan 1, 2023 | Jan 31, 2023 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2023 | - | |
| Oct 1, 2022 | Oct 31, 2022 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2022 | - | |
| Sep 1, 2022 | Sep 30, 2022 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2022 | - | |
| Jul 1, 2022 | Jul 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2022 | - | |
| Jun 1, 2022 | Jun 30, 2022 | MON | No | Yes | - | - | - | Resolved | Jun 30, 2022 | - | |
| May 1, 2022 | May 31, 2022 | MON | No | Yes | - | - | - | Resolved | May 31, 2022 | - | |
| Apr 1, 2022 | Apr 30, 2022 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2022 | - | |
| Mar 1, 2022 | Mar 31, 2022 | MON | No | Yes | - | - | - | Resolved | Mar 31, 2022 | - | |
| Jan 1, 2022 | Jan 31, 2022 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2022 | - | |
| Dec 1, 2021 | Dec 31, 2021 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Oct 1, 2021 | Oct 31, 2021 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2021 | - | |
| Jul 1, 2021 | Jul 31, 2021 | MON | No | Yes | - | - | - | Resolved | Jul 31, 2021 | - | |
| May 1, 2021 | May 31, 2021 | MON | No | Yes | - | - | - | Resolved | May 31, 2021 | - | |
| Apr 1, 2021 | Apr 30, 2021 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2021 | - | |
| Jul 1, 2020 | Sep 30, 2020 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MR | No | No | - | 0.010 mg/L | - | Resolved | Jun 30, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | - | 0.0004 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MR | No | No | - | 0.010 mg/L | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Dec 31, 2020 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2020 | - | |
| May 19, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2020 | - | |
| May 19, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2020 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2019 | - | |
| Apr 1, 2019 | Jun 30, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2019 | - | |
| Jan 1, 2019 | Mar 31, 2019 | MCL | Yes | No | .012 MG/L | 0.010 mg/L | .01 | Resolved | Mar 31, 2019 | - | |
| Nov 25, 2018 | - | Other | No | No | - | - | - | Resolved | Dec 1, 2018 | - | |
| Nov 25, 2018 | - | Other | No | No | - | - | - | Resolved | Dec 1, 2018 | - | |
| Oct 1, 2018 | Dec 31, 2018 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2018 | - | |
| Oct 1, 2018 | Dec 31, 2018 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | - | |
| Jul 1, 2018 | Sep 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Sep 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MCL | Yes | No | .019 MG/L | 0.010 mg/L | .01 | Resolved | Jun 30, 2018 | - | |
| Mar 1, 2018 | - | Other | No | No | - | - | - | Resolved | Mar 14, 2018 | - | |
| Mar 1, 2018 | - | Other | No | No | - | - | - | Resolved | Mar 14, 2018 | - | |
| Mar 1, 2018 | - | Other | No | No | - | - | - | Resolved | Mar 14, 2018 | - |
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.