Wastewater treatment plants in New Mexico
31 facilities · 18 MGD combined flow
Klarifi tracks 31 publicly owned wastewater treatment plants in New Mexico with a combined average flow of 18 MGD, serving about 1,021,779 residents. 4 plants treat more than 1 MGD and 0 more than 10 MGD; 9 use lagoon systems and 6 have digesters or biogas infrastructure. The largest is City Of Farmington in Farmington at 6.33 MGD. 6 NPDES permits expire this year and 4 next year.
Every plant below links to a profile with average and design flow, the NPDES permit and its expiry, a three-year compliance snapshot and the capital projects planned in its city. Treatment technology and verified contacts are shown with a free Klarifi account.
31 plant locations in New Mexico; dot size follows average flow. Boundaries: U.S. Census Bureau.
NPDES permits and renewals in New Mexico
Every plant discharges under an NPDES permit that is renewed every five years, usually with tighter limits. The renewal year is the year a plant budgets for upgrades.
Largest wastewater treatment plants in New Mexico
| Facility | City | Avg flow (MGD) | Design (MGD) | NPDES permit | Expires | Violations (3y) |
|---|---|---|---|---|---|---|
| City Of Farmington | Farmington | 6.33 | 5.8 | NM0020583 | Nov 2026 | 47 |
| Santa Fe WWTP | Santa Fe | 5.24 | 6.5 | NM0022292 | Aug 2026 | 223 |
| Sunland Park Wastewater Plant | Sunland Park | 1.1 | 0.61 | NM0029483 | Oct 2025 | 52 |
| Taos Wastewater Treatment Plant | Taos | 1.02 | 1.25 | NM0024066 | Oct 2030 | 55 |
| Silver City (city Of) - Wastewater Treatment Plant | Silver City | 0.94 | 2 | NM0020109 | Aug 2018 | 18 |
| Anthony Water & Sanitation Dis | Anthony | 0.91 | — | NM0029629 | Dec 2028 | 42 |
| Espanola, City Of | Espanola | 0.83 | 1.01 | NM0029351 | Feb 2028 | 13 |
| City Of Santa Rosa Wastewater | Santa Rosa | 0.3 | 0.45 | NM0024988 | Apr 2027 | 411 |
| Shiprock WWTF | Shiprock | 0.28 | 1 | NN0020621 | Aug 2028 | 8 |
| Rio Del Oro WW Treatment Fac. | Los Lunas | 0.24 | 0.3 | NM0030414 | Jul 2031 | 13 |
Treatment technology for each plant is shown with a free Klarifi account. Create one →
New Mexico plants by treatment technology
All 31 plants in New Mexico
Wastewater treatment 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 October 26, 2026.
Wastewater terms: WWTP · POTW · MGD · NPDES permit · Tertiary treatment · Significant industrial user · all terms
Cite this page
Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.
Klarifi. “Wastewater treatment plants in New Mexico.” Updated October 26, 2026. https://klarifi.io/facilities/new-mexicoNeed a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.