Clean Water Act discharge permit · NPDES NM0020133
LOS ALAMOS COUNTY-WHITE ROCK P, White Rock, NM: NPDES NM0020133 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 27Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
LOS ALAMOS COUNTY-WHITE ROCK P, held by LOS ALAMOS COUNTY (WHITE ROCK), holds NPDES permit NM0020133, which discharges to Canada Del Buey. EPA’s file records it issued December 21, 2016 and expiring January 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | LOS ALAMOS COUNTY-WHITE ROCK P |
|---|---|
| Permittee as filed | LOS ALAMOS COUNTY (WHITE ROCK) |
| NPDES ID | NM0020133 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 21, 2016 |
| Expiration date | January 31, 2022 |
| Address | White Rock, NM 87547 |
| Receiving water | CANADA DEL BUEY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Canada Ancha-Rio Grande (HUC 130202010203) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 29Pollutants on file
- 27Under a numeric limit
- 26With a violation of any kind
- 8With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 39 | 27 | February 29, 2024 | 55% over the limit |
| Oxygen, dissolved [DO] | 0 | 26 | 26 | July 31, 2025 | 35% over the limit |
| Chlorine, total residual | 2 | 27 | 24 | March 31, 2008 | 800% over the limit |
| E. coli | 4 | 11 | 5 | December 31, 2016 | 121% over the limit |
| pH | 4 | 10 | 4 | September 30, 2025 | |
| Solids, total suspended | 8 | 15 | 3 | March 31, 2010 | 349% over the limit |
| BOD, 5-day, percent removal | 2 | 2 | 2 | February 28, 2022 | 7% over the limit |
| Coliform, fecal general | 0 | 7 | 1 | February 28, 2011 | 361% over the limit |
| Coef Of Var Static Renewal 48Hr Acute D. pulex | 2 | 10 | 0 | ||
| Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex | 2 | 8 | 0 | ||
| NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex | 2 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 6 | 0 | ||
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia | 2 | 1 | 0 | ||
| LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas | 2 | 1 | 0 | ||
| Whole effluent toxicity - retest #1 | 4 | 0 | 0 | ||
| Whole effluent toxicity - retest #2 | 4 | 0 | 0 | ||
| Solids, suspended percent removal | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 2, 2026 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| January 10, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| August 19, 2024 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID NM0020133 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.