Clean Water Act discharge permit · NPDES OK0031682
CALERA PWA, Calera, OK: NPDES OK0031682 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
CALERA PWA, held by Calera PWA, holds NPDES permit OK0031682, which discharges to 410700000040_00 Trib/ Island Bayou/Red R. EPA’s file records it issued October 12, 2020 and expiring October 31, 2025. 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 | CALERA PWA |
|---|---|
| Permittee as filed | Calera PWA |
| NPDES ID | OK0031682 |
| 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 | October 12, 2020 |
| Expiration date | October 31, 2025 |
| Issuing agency | ODEQ |
| Address | Calera, OK 74730 |
| Receiving water | 410700000040_00 trib/ Island Bayou/Red R |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 6Under a numeric limit
- 10With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 118 | 114 | July 31, 2024 | 582% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 9 | 76 | 69 | December 31, 2023 | 494% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 53 | 50 | April 30, 2007 | 305% over the limit |
| Solids, total suspended | 3 | 50 | 40 | December 31, 2023 | 277% over the limit |
| Oxygen, dissolved [DO] | 3 | 8 | 6 | May 31, 2017 | 42% over the limit |
| Coliform, fecal general | 0 | 5 | 5 | May 31, 2015 | 99,999% over the limit |
| Chlorine, total residual | 0 | 3 | 3 | January 31, 2014 | 1,140% over the limit |
| pH | 2 | 8 | 2 | January 31, 2025 | |
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Solids, total dissolved- 180 deg. C | 0 | 6 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 12, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
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
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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 OK0031682 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.