73 public water systems in New Mexico were sampled in EPA's UCMR 5 programme (2023–2025); we show six PFAS and lithium. Read 2026-10-31.
5 of 73 systems had at least one sample above a 2024 federal limit; 71 had at least one PFAS found above the reporting level; 2 had none found above the reporting level.
A single sample above a 2024 limit is a measurement, not a violation. Compliance is judged on running yearly averages, and water systems have until 2029 to meet the limits. On 20 May 2026 EPA proposed giving qualifying systems until 2031 for PFOA and PFOS and removing the limits for PFHxS, PFNA and HFPO-DA; those proposals were not final when we last checked (5 Nov 2026). Counts are per system, not per person; population figures are available only for systems serving more than 25,000 people (about 1,143,752 people across those systems here). UCMR 5 was a one-time national monitoring programme (2023–2025). The results are a snapshot at the system's entry points or taps on the sample dates, not a continuous measurement and not a compliance record.
| System | People served | UCMR 5 result |
|---|---|---|
| Albuquerque Albuquerque Water System | 560,326 | None detected (below the reporting level) |
Pages for these are being added in stages. The data for all 73 systems is in the public dataset.
| System | People served | UCMR 5 result |
|---|---|---|
| Rio Rancho Water & Ww Services Rio Rancho Water & Ww Services | 107,350 | None detected (below the reporting level) |
| Las Cruces Municipal Water System Las Cruces Municipal Water System | 98,175 | None detected (below the reporting level) |
| Santa Fe Water System (City of) Santa Fe Water System (City of) | 90,810 | None detected (below the reporting level) |
| Roswell Municipal Water System Roswell Municipal Water System | 54,025 | None detected (below the reporting level) |
| Farmington Water System Farmington Water System | 47,655 | None detected (below the reporting level) |
| Epcor Water New Mexico Inc Clovis Epcor Water New Mexico Inc Clovis | 41,066 | Detected, below the 2024 limit |
| Hobbs Municipal Water Supply Hobbs Municipal Water Supply | 40,418 | Above the 2024 limit in at least one sample |
| Alamogordo Domestic Water System Alamogordo Domestic Water System | 35,301 | Above the 2024 limit in at least one sample |
| University of New Mexico University of New Mexico | 35,000 | None detected (below the reporting level) |
| Carlsbad Municipal Water System Carlsbad Municipal Water System | 33,626 | None detected (below the reporting level) |
| Los Alamos Municipal Water System Los Alamos Municipal Water System | — | None detected (below the reporting level) |
| Northeast Nm Detention Facility Northeast Nm Detention Facility | — | None detected (below the reporting level) |
| Epcor Water New Mexico Inc., Edgewood Epcor Water New Mexico Inc., Edgewood | — | None detected (below the reporting level) |
| Lee/Hammond Water Treatment Plant Co-Op Lee/Hammond Water Treatment Plant Co-Op | — | None detected (below the reporting level) |
| La Union Mw&Sa La Union Mw&Sa | — | None detected (below the reporting level) |
| Santa Fe County South Sector Santa Fe County South Sector | — | None detected (below the reporting level) |
| Moongate West Moongate West | — | None detected (below the reporting level) |
| Espanola Water System Espanola Water System | — | None detected (below the reporting level) |
| La Madera Mdwca La Madera Mdwca | — | None detected (below the reporting level) |
| Lower Rio Grande Pwwa South Valley Lower Rio Grande Pwwa South Valley | — | Detected, below the 2024 limit |
| Camino Real Regional Utility Authority Camino Real Regional Utility Authority | — | None detected (below the reporting level) |
| Taos Municipal Water System Taos Municipal Water System | — | None detected (below the reporting level) |
| Gallup Water System Gallup Water System | — | None detected (below the reporting level) |
| Bernalillo Water System Bernalillo Water System | — | None detected (below the reporting level) |
| Aztec Domestic Water System Aztec Domestic Water System | — | None detected (below the reporting level) |