New Mexico NPDES permit search
Status, expiry and violations for 31 municipal wastewater permits · issued by EPA Region 6
In short
How do I look up an NPDES permit in New Mexico?
Search this page by permit number or plant name for a municipal plant’s permit status, expiry date and violations. For the official file, search EPA’s list of New Mexico permits. EPA’s ECHO database shows the monitoring results and violations of every permit. The 202 industrial permits in New Mexico are listed in Klarifi with a free account.
Links to official sources checked September 2026.
Effective
24
Administratively continued
6
Expired
1
Plants with effluent violations, 3 years
26
Where to find official New Mexico NPDES records
New Mexico has not taken over the NPDES program: EPA Region 6 issues and enforces the permits and keeps the official file, with the state agency handling water-quality certification. NMED also inspects plants for EPA. A state program, NMPDES, is planned but not yet approved. EPA Region 6 website ↗
permits · permit documents
EPA Region 6’s table of permits by town. Find the facility (Ctrl+F for the name or NM number) and click it for the final permit, fact sheet and response to comments.
permits · DMRs · inspections · violations · enforcement
EPA’s Enforcement and Compliance History Online. Search water facilities by permit number, name or city; the Detailed Facility Report lists inspections, violations and enforcement actions, and Effluent Charts plot monitoring results against the permit limits.
- Discharge monitoring reports
- Through EPA’s NetDMR; copies of other reports go to NMED’s Surface Water Quality Bureau.
Industrial and commercial NPDES permits in New Mexico
Most NPDES permits are not held by municipal plants. EPA’s permit database lists 202 individual permits in force for industrial and commercial facilities in New Mexico (manufacturers, food processors, mines, power plants, landfills), 15 of them major dischargers, plus 196 facilities covered by a general permit, mostly for stormwater. 22 of the individual permits recorded at least one effluent violation in the last three years.
| Facility | Permit | Status | Expires | Effluent violations |
|---|
Unlock 202 industrial permits in New Mexico
Search every industrial and commercial discharger in New Mexico by name or permit number, with permit status, expiry and violation history. Free with a Klarifi account.
Industrial and commercial NPDES permits in New Mexico: permits in force (effective or administratively continued) held by facilities EPA does not class as publicly owned treatment works or federal facilities. Source: EPA ICIS-NPDES via Klarifi, October 2026.
Violations at New Mexico wastewater plants
26 of the 31 municipal plants on this page recorded at least one effluent violation, a monitored value above a permit limit, in the last three years, and 27 had a violation of any kind, including late or missing monitoring reports. Each plant’s page shows its own count. EPA’s enforcement records list 160 formal cases naming New Mexico wastewater plants, 63 of them since fiscal year 2020, with $717,007 in penalties assessed. Enforcement cases in New Mexico →
Permit renewals by year
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.
Largest permit holders in New Mexico
| Facility | City | Avg flow (MGD) | Design (MGD) | NPDES permit | Status | Expires | Violations (3y) |
|---|---|---|---|---|---|---|---|
| City Of Las Cruces - Utilities | Las Cruces | — | 8.9 | NM0023311 | Administratively continued | Jun 2026 | 28 |
| Santa Fe WWTP | Santa Fe | 5.24 | 6.5 | NM0022292 | Administratively continued | Aug 2026 | 222 |
| City Of Farmington | Farmington | 6.33 | 5.8 | NM0020583 | Effective | Nov 2026 | 47 |
| Las Vegas (city Of) | Las Vegas | — | 2.5 | NM0028827 | Effective | Nov 2027 | 111 |
| Town Of Red River | Taos | 0.02 | 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 | 0.94 | 2 | NM0020109 | Administratively continued | Aug 2018 | 18 |
| Taos Wastewater Treatment Plant | Taos | 1.02 | 1.25 | NM0024066 | Effective | Oct 2030 | 55 |
| City Of Belen WWTP | Belen | — | 1.2 | NM0020150 | Effective | Nov 2030 | 54 |
| Dona Ana County South West Regional WWTP | La Mesa | — | 1.05 | NM0030490 | Effective | May 2030 | 67 |
New Mexico NPDES permits: questions
NPDES permit search in other states
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 12, 2026.
Wastewater terms: NPDES permit · POTW · Significant industrial user · MGD · Equalization tank · Centrate · all terms