Clean Water Act discharge permit · NPDES AZ0021199
TOWN OF SUPERIOR WWTP, Superior, AZ: NPDES AZ0021199 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 151Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
TOWN OF SUPERIOR WWTP, held by Town Of Superior Public Works, holds NPDES permit AZ0021199. EPA’s file records it issued May 8, 2018 and expiring May 7, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | TOWN OF SUPERIOR WWTP |
|---|---|
| Permittee as filed | Town Of Superior Public Works |
| NPDES ID | AZ0021199 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 8, 2018 |
| Expiration date | May 7, 2023 |
| Address | Superior, AZ 85273 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Silver King Wash-Queen Creek (HUC 150501000402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 151Pollutants on file
- 151Under a numeric limit
- 17With a violation of any kind
- 9With 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; the 60 with the most exceedances of 151 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Copper, total recoverable | 7 | 20 | 16 | June 30, 2026 | 737% over the limit |
| Cyanide, total [as CN] | 7 | 15 | 11 | September 30, 2024 | 191% over the limit |
| Solids, total suspended | 9 | 31 | 8 | December 31, 2023 | 874% over the limit |
| BOD, 5-day, 20 deg. C | 9 | 42 | 3 | August 31, 2023 | 60% over the limit |
| Solids, suspended percent removal | 1 | 8 | 3 | August 31, 2023 | 420% over the limit |
| pH | 6 | 16 | 2 | November 30, 2016 | |
| BOD, 5-day, percent removal | 1 | 7 | 2 | August 31, 2023 | 400% over the limit |
| Mercury, total recoverable | 9 | 7 | 1 | December 31, 2016 | 100% over the limit |
| E. coli, colony forming units [CFU] | 3 | 5 | 1 | June 30, 2023 | 321% over the limit |
| Chlorine, total residual | 5 | 17 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 12 | 0 | ||
| Selenium, total recoverable | 9 | 6 | 0 | ||
| Silver total recoverable | 7 | 6 | 0 | ||
| Hardness, total [as CaCO3] | 3 | 5 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 5 | 4 | 0 | ||
| Sulfide, total [as S] | 3 | 4 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 | ||
| Zinc, total recoverable | 7 | 0 | 0 | ||
| Lead, total recoverable | 7 | 0 | 0 | ||
| Chromium, total recoverable | 7 | 0 | 0 | ||
| Oil & Grease | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 3 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 0 | 0 | ||
| Arsenic, total recoverable | 3 | 0 | 0 | ||
| Iron, total recoverable | 3 | 0 | 0 | ||
| Thallium, total recoverable | 3 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 3 | 0 | 0 | ||
| Nickel, total recoverable | 3 | 0 | 0 | ||
| Cadmium, total recoverable | 3 | 0 | 0 | ||
| Antimony, total recoverable | 3 | 0 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 3 | 0 | 0 | ||
| Dichlorobromomethane | 3 | 0 | 0 | ||
| Carbon tetrachloride | 3 | 0 | 0 | ||
| 1,2-Dichloroethane | 3 | 0 | 0 | ||
| Bromoform | 3 | 0 | 0 | ||
| Dibromochloromethane | 3 | 0 | 0 | ||
| Chloroform | 3 | 0 | 0 | ||
| Toluene | 3 | 0 | 0 | ||
| Benzene | 3 | 0 | 0 | ||
| Acenaphthylene | 3 | 0 | 0 | ||
| Acenaphthene | 3 | 0 | 0 | ||
| Acrolein | 3 | 0 | 0 | ||
| Acrylonitrile | 3 | 0 | 0 | ||
| Anthracene | 3 | 0 | 0 | ||
| Benzo[b]fluoranthene | 3 | 0 | 0 | ||
| Benzo[k]fluoranthene | 3 | 0 | 0 | ||
| Benzo[a]pyrene | 3 | 0 | 0 | ||
| Bis[2-chloroethyl] ether | 3 | 0 | 0 | ||
| Bis[2-chloroethoxy]methane | 3 | 0 | 0 | ||
| Bis[2-chloroisopropyl] ether | 3 | 0 | 0 | ||
| Butyl benzyl phthalate | 3 | 0 | 0 | ||
| Chlorobenzene | 3 | 0 | 0 | ||
| Chrysene | 3 | 0 | 0 | ||
| Diethyl phthalate | 3 | 0 | 0 | ||
| Dimethyl phthalate | 3 | 0 | 0 | ||
| 1,2-Diphenylhydrazine | 3 | 0 | 0 | ||
| Ethylbenzene | 3 | 0 | 0 | ||
| Fluoranthene | 3 | 0 | 0 | ||
| Fluorene | 3 | 0 | 0 | ||
| Hexachlorocyclopentadiene | 3 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AZ0021199.
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.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.