NPDES permits in New Mexico
29 permits held by publicly owned wastewater treatment plants · issued by EPA Region 6
Effective
22
Administratively continued
6
Expired
1
Total tracked
29
New Mexico is not a delegated state: NPDES permits are issued by US EPA Region 6 (with NMED), with the state agency handling water-quality certification. Klarifi tracks 29 permits held by publicly owned treatment plants in the state, with status, expiry, design flow and three-year compliance for each. Agency website →
An NPDES permit runs for five years. To keep discharging, a plant must apply for renewal at least 180 days before the expiry date, and the renewed permit usually arrives with tighter effluent limits, new monitoring requirements or a compliance schedule. That is why the year a permit expires is the year a plant starts budgeting for upgrades: nutrient removal, disinfection, capacity or controls.
Permit renewals by year
Largest permit holders in New Mexico
| Facility | City | Avg flow (MGD) | Design (MGD) | NPDES permit | Status | Expires | Violations (3y) |
|---|---|---|---|---|---|---|---|
| Anthony Water & Sanitation Dis | Anthony | 1.1 | 101 | NM0029629 | Effective | Dec 2028 | 42 |
| City Of Las Cruces - Utilities | Las Cruces | — | 8.9 | NM0023311 | Administratively continued | Jun 2026 | 40 |
| Santa Fe WWTP | Santa Fe | 5.52 | 6.5 | NM0022292 | Administratively continued | Aug 2026 | 224 |
| City Of Farmington | Farmington | 6.23 | 5.8 | NM0020583 | Effective | Nov 2026 | 47 |
| Las Vegas (city Of) | Las Vegas | 1.23 | 2.5 | NM0028827 | Effective | Nov 2027 | 111 |
| Town Of Red River | Taos | 0.5 | 2.5 | NM0024899 | Effective | Jun 2027 | 23 |
| City Of Rio Rancho Wastewater Facilities | Rio Rancho | — | 2.4 | NM0027987 | Administratively continued | Jul 2026 | 40 |
| Silver City (city Of) - Wastewater Treatment Plant | Silver City | 1.02 | 2 | NM0020109 | Administratively continued | Aug 2018 | 18 |
| Taos Wastewater Treatment Plant | Taos | 1.03 | 1.25 | NM0024066 | Effective | Oct 2030 | 56 |
| City Of Belen WWTP | Belen | — | 1.2 | NM0020150 | Effective | Nov 2030 | 58 |
| Dona Ana County South West Regional WWTP | La Mesa | — | 1.05 | NM0030490 | Effective | May 2030 | 69 |
| Dulce Wastewater Treat.Plt. | Dulce | — | 1.05 | NM0030520 | Effective | Sep 2029 | 42 |
| Espanola, City Of | Espanola | 0.78 | 1.01 | NM0029351 | Effective | Feb 2028 | 13 |
| City Of Artesia | Artesia | — | 1 | NM0022268 | Effective | Aug 2030 | 0 |
| Shiprock WWTF | Shiprock | 0.29 | 1 | NN0020621 | Effective | Aug 2028 | 8 |
| Socorro, City Of | Socorro | — | 1 | NM0028835 | Administratively continued | Jul 2026 | 7 |
| City Of Bloomfield | Bloomfield | — | 0.9 | NM0020770 | Effective | Apr 2031 | 2 |
| Sunland Park Wastewater Plant | Sunland Park | 1.2 | 0.61 | NM0029483 | Expired | Oct 2025 | 52 |
| The Village Of Angelfire, WWTP | Angel Fire | — | 0.5 | NM0030503 | Effective | Jun 2028 | 0 |
| City Of Santa Rosa Wastewater | Santa Rosa | 0.29 | 0.45 | NM0024988 | Effective | Apr 2027 | 411 |
| Hatch, Village Of | Hatch | 0.25 | 0.3 | NM0020010 | Effective | Mar 2031 | 0 |
| Rio Del Oro WW Treatment Fac. | Los Lunas | 0.24 | 0.3 | NM0030414 | Effective | Jul 2031 | 16 |
| Village Of Chama | Chama | 0.08 | 0.3 | NM0027731 | Effective | Feb 2028 | 171 |
| Cuba, Village Of | Cuba | — | 0.14 | NM0024848 | Administratively continued | Jul 2026 | 332 |
| Jemez Springs, Village Of | Jemez Springs | 0.04 | 0.08 | NM0028011 | Effective | Jul 2031 | 95 |
NPDES permits in New Mexico: questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026.