Rio Arriba, NM
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Rio Arriba in New Mexico · Population: 40,165
SDWIS systems such as ESPANOLA WATER SYSTEM; Jicarilla Dulce; Santa Clara Pueblo; NPL sites such as North Railroad Avenue Plume anchor Rio Arriba, NM's EPA extract. Derived burden score 20/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
No TRI Form R facilities sit in Rio Arriba in this extract; water coverage still lists ESPANOLA WATER SYSTEM; Jicarilla Dulce; Santa Clara Pueblo. AQS monitors logged median AQI 45 / peak 108 in 2024.
Burden score 20/100 (Low Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Rio Arriba -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 252 (70%) | 104 | 3 | 108 |
| 2023 | 318 (92%) | 28 | 0 | 71 |
| 2022 | 304 (92%) | 26 | 1 | 105 |
| 2021 | 276 (76%) | 86 | 1 | 143 |
| 2020 | 313 (86%) | 49 | 0 | 90 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in New Mexico, see the EPA's AirNow.gov.
Water Systems (50)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| ESPANOLA WATER SYSTEM | 12,012 | 9 |
| Jicarilla Dulce | 3,064 | 18 |
| Santa Clara Pueblo | 2,500 | 9 |
| CHAMA WATER SYSTEM | 1,573 | 26 |
| AGUA SANA WUA | 1,514 | 47 |
| BLANCO MDWCA | 1,148 | 17 |
| ALCALDE MDWCA | 927 | 57 |
| CHAMITA MDWCA | 902 | 13 |
| TRUCHAS MDWCA | 629 | 22 |
| CHAMISAL MDWCA | 550 | 4 |
| VELARDE MDWCA | 543 | 5 |
| DIXON MDWCA | 500 | 3 |
| TIERRA AMARILLA MDWCA | 470 | 15 |
| CANJILON WATER SYSTEM | 469 | 0 |
| ABIQUIU MDWCA | 420 | 20 |
| CUATRO VILLAS MDWCA | 420 | 8 |
| CEBOLLA MDWCA | 350 | 26 |
| TRES PIEDRAS MDWCA | 350 | 3 |
| CORDOVA MDWCA | 325 | 24 |
| ENSENADA MDWCA | 300 | 0 |
| EL RITO CANYON MDWCA | 300 | 3 |
| CORONADO HIGH SCHOOL | 263 | 10 |
| LOS OJOS MDWCA | 237 | 18 |
| OJO CALIENTE MDWCA | 226 | 78 |
| OJO SARCO MDWCA | 225 | 12 |
| LUMBERTON MDWCA | 223 | 63 |
| CAPULIN MDWCA | 215 | 48 |
| DURANES Y GAVILAN MDWCA | 215 | 2 |
| RIO EMBUDO MDWCA | 159 | 3 |
| CANONES MDWCA | 150 | 16 |
| ENCHANTED MESA MOBILE HOME PARK | 145 | 5 |
| VISTA REDONDA MDWCA | 132 | 25 |
| APODACA MDWCA | 129 | 1 |
| LA MADERA MDWCA | 124 | 5 |
| GALLINA WATER SYSTEM | 99 | 48 |
| BARRANCO MDWCA | 97 | 5 |
| RUTHERON MUTUAL WATER ASSOCIATION | 90 | 12 |
| CHAMA WEST WATER USERS ASSOCIATION | 90 | 10 |
| LINDRITH COMMUNITY WATER COOP INC | 85 | 16 |
| VALLECITOS MDWCA | 84 | 64 |
| DELANCEY STREET FOUNDATION | 83 | 21 |
| COYOTE MDWCA | 77 | 23 |
| SHALOM MOBILE HOME PARK | 72 | 10 |
| CANON PLAZA MDWCA | 60 | 17 |
| ANCONES MDWWCA | 60 | 16 |
| YOUNGSVILLE MDWCA | 45 | 15 |
| Jicarilla South Woodyard | 33 | 5 |
| LA ASOCIACION DE AGUA DE LOS BRAZOS | 32 | 18 |
| SOLACITO MDWCA | 29 | 17 |
| CHRIST IN THE DESERT MONASTERY | 25 | 10 |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| North Railroad Avenue Plume | NPL Site | 50.00 |
Cities in Rio Arriba (29)
Frequently Asked Questions
What is the environmental risk level in Rio Arriba, New Mexico? ▼
Are there Superfund sites in Rio Arriba? ▼
How many toxic release facilities are in Rio Arriba? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.