REGINA MDWCA
New Mexico - Community Water System - PWSID: NM3509523
System Information
| PWSID | NM3509523 |
| System Name | REGINA MDWCA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1980 |
| Last Reported | Mar 31, 2026 |
Location & Contact
| State | New Mexico |
| City | LOS ALAMOS |
| ZIP Code | 87544 |
| Address | - |
| Organization | GROFFMAN, ARMOND |
| Phone | 505-663-1466 |
Population & Service
| Population Served | 705 |
| Service Connections | 260 |
Drinking Water Violations (314)
This water system has 314 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 | - | Other | No | No | - | - | - | Resolved | Oct 6, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 22, 2025 | - | |
| Oct 11, 2024 | - | TT | Yes | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Aug 16, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 5, 2025 | - | |
| Aug 16, 2024 | - | Other | No | No | - | - | - | Resolved | Feb 5, 2025 | - | |
| Jul 16, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Jul 16, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Jul 16, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 8, 2025 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Mar 19, 2024 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Mar 19, 2024 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Oct 24, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Oct 24, 2023 | - | |
| Mar 21, 2021 | - | Other | No | No | - | - | - | Resolved | Dec 9, 2021 | - | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | - | 7 MFL | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | - | 7 MFL | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2020 | Dec 31, 2022 | MR | No | Yes | - | 7 MFL | - | Resolved | Dec 31, 2022 | - | |
| Oct 1, 2019 | - | Other | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Oct 1, 2019 | - | Other | No | No | - | - | - | Resolved | Sep 30, 2020 | - | |
| Jul 1, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 7, 2020 | - | |
| Jul 1, 2019 | - | Other | No | No | - | - | - | Resolved | Jul 7, 2020 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Oct 1, 2018 | - | Other | No | No | - | - | - | Resolved | Feb 19, 2019 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2019 | - | |
| Oct 1, 2018 | - | Other | No | No | - | - | - | Resolved | Feb 19, 2019 | - | |
| Oct 1, 2018 | Sep 30, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2019 | - |
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.