Clean Water Act discharge permit · NPDES NNF001033
LOWER GREASEWOOD WATER TREATMENT PLANT, Navajo County, AZ: NPDES NNF001033 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
LOWER GREASEWOOD WATER TREATMENT PLANT, held by Navajo Tribal Utility Authority, holds NPDES permit NNF001033, which discharges to Pueblo Colorado Wash. EPA’s file records it issued August 12, 2022 and expiring August 11, 2027. 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 | LOWER GREASEWOOD WATER TREATMENT PLANT |
|---|---|
| Permittee as filed | Navajo Tribal Utility Authority |
| NPDES ID | NNF001033 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 12, 2022 |
| Expiration date | August 11, 2027 |
| Address | Navajo County, AZ 86505 |
| Receiving water | Pueblo Colorado Wash |
| Subwatershed | Town of Greasewood-Pueblo Colorado Wash (HUC 150200110307) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 8 | 4 | November 30, 2022 | 5,055% over the limit |
| Turbidity | 2 | 7 | 3 | November 30, 2022 | |
| Conductivity | 2 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Solids, total suspended | 2 | 4 | 0 | ||
| Oil and grease | 2 | 4 | 0 | ||
| Flow, discharge | 2 | 4 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES NNF001033.
Velarion’s copy of EPA’s ICIS-NPDES files does not 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NNF001033.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 NNF001033 there.
Nearby on the register
- Discharge permits in Navajo County
- Every permit record in Navajo County, A to Z
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- Every permit record in Arizona, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.