Clean Water Act discharge permit · NPDES AZC117301
APS CHOLLA - FLY ASH POND, AZ: NPDES AZC117301 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
APS CHOLLA - FLY ASH POND, held by Arizona Public Service - Cholla Power Plant, holds NPDES permit AZC117301, which discharges to Little Colorado River | Porter Tank Draw - Mcd. EPA’s file records it issued July 30, 2026 and expiring August 28, 2030. 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.
What the register holds for APS CHOLLA - FLY ASH POND: its NPDES ID, its permit type and status, its dates, its address, Arizona, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC117301.
Identity
| Facility as filed | APS CHOLLA - FLY ASH POND |
|---|---|
| Permittee as filed | Arizona Public Service - Cholla Power Plant |
| NPDES ID | AZC117301 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 30, 2026 |
| Expiration date | August 28, 2030 |
| Issuing agency | ADEQ |
| Address | AZ 85135 |
| Receiving water | Little Colorado River | Porter Tank Draw - MCD |
| Subwatershed | Obed Meadow-Little Colorado River (HUC 150200080609) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES AZC117301.
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 AZC117301.
Inspections
EPA’s inspection file holds no inspection for NPDES AZC117301.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES AZC117301.
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, AZC117301.
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 AZC117301 there.
APS CHOLLA - FLY ASH POND, Arizona: Coverage under a general permit AZC117301, held by Arizona Public Service - Cholla Power Plant; Effective; issued July 30, 2026, term to August 28, 2030, by ADEQ; discharges to Little Colorado River | Porter Tank Draw - MCD.
Other permits held by Arizona Public Service - Cholla Power Plant
- CHOLLA POWER PLANT, Joseph City: AZC098778, issued May 15, 2023
- APS CHOLLA POWER PLANT - BOTTOM ASH HAUL: AZC100040, issued August 22, 2023
- CHOLLA GENERATING STATION, Joseph City: AZI108251, issued January 16, 2025
- CHOLLA GENERATING STATION, Joseph City: AZMS80561, issued February 11, 2020
APS CHOLLA - FLY ASH POND among its neighbors
EPA’s permit file holds 4 discharge permits in the Obed Meadow-Little Colorado River subwatershed (HUC 150200080609), AZC117301 among them.
Other permits in the Obed Meadow-Little Colorado River subwatershed (HUC 150200080609)
- APS CHOLLA - FLY ASH POND, Unknown: AZC117356, minor permit, discharging to Little Colorado River | Porter Tank Draw - MCD, permit term to August 28, 2030
- CHOLLA Q275 INTERCONNECT, Unknown: AZC115848, minor permit, discharging to Little Colorado River | Porter Tank Draw - MCD, permit term to August 28, 2030
- HASHKNIFE SOLAR, Unknown: AZC105876, minor permit, permit term to June 30, 2025
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.