Water quality by county
in New Mexico
EPA sampled public water systems across New Mexico for PFAS under its UCMR 5 programme. Of the 33 counties, 4 have a reading above a federal limit and 7 have not been sampled at all — which is not a clean result, only an absence of one. Each county below shows what was found, at what concentration, and at which utility.
| county | Population | Worst result | Compound |
|---|---|---|---|
| Otero County | 69,711 | 1.9× | PFOA · 7.4 ng/L |
| Curry County | 47,156 | 1.8× | PFHxS · 17.7 ng/L |
| Sierra County | 11,389 | 1.7× | PFOS · 6.7 ng/L |
| Lea County | 75,151 | 1.3× | PFOA · 5.3 ng/L |
| Bernalillo County | 671,747 | under the limit | — |
| Catron County | 3,795 | not sampled | — |
| Chaves County | 63,697 | under the limit | — |
| Cibola County | 26,686 | under the limit | — |
| Colfax County | 12,307 | under the limit | — |
| De Baca County | 1,657 | not sampled | — |
| Doña Ana County | 229,366 | not sampled | — |
| Eddy County | 61,436 | under the limit | — |
| Grant County | 27,541 | under the limit | — |
| Guadalupe County | 4,385 | not sampled | — |
| Harding County | 635 | not sampled | — |
| Hidalgo County | 3,966 | not sampled | — |
| Lincoln County | 20,025 | under the limit | — |
| Los Alamos County | 19,675 | under the limit | — |
| Luna County | 25,878 | under the limit | — |
| McKinley County | 68,945 | under the limit | — |
| Mora County | 4,096 | not sampled | — |
| Quay County | 8,403 | under the limit | — |
| Rio Arriba County | 39,955 | under the limit | — |
| Roosevelt County | 18,713 | under the limit | — |
| San Juan County | 120,817 | under the limit | — |
| San Miguel County | 26,428 | under the limit | — |
| Sandoval County | 157,757 | under the limit | — |
| Santa Fe County | 157,765 | under the limit | — |
| Socorro County | 15,967 | under the limit | — |
| Taos County | 34,482 | under the limit | — |
| Torrance County | 15,986 | under the limit | — |
| Union County | 3,926 | under the limit | — |
| Valencia County | 80,813 | under the limit | — |