Clean Water Act discharge permit · NPDES OK0037818
CALVIN PWA, Calvin, Township Of, OK: NPDES OK0037818 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 6Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CALVIN PWA, held by Calvin PWA, holds NPDES permit OK0037818, which discharges to 220600011028_00 Trib/ South Canadian R.. EPA’s file records it issued September 5, 2017 and expiring September 30, 2022.
CALVIN PWA, Calvin, Township Of, Oklahoma: Individual permit OK0037818, held by Calvin PWA; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 5, 2017, term to September 30, 2022, by ODEQ; discharges to 220600011028_00 trib/ South Canadian R.; Sewage Treatment Facilities.
- pH: 2 limits, 76 violations of any kind, 42 effluent exceedances, latest February 28, 2011.
- Coliform, fecal general: 0 limits, 69 violations of any kind, 41 effluent exceedances, latest September 30, 2017, largest 99,999% over the limit.
- BOD, 5-day, 20 deg. C: 3 limits, 64 violations of any kind, 13 effluent exceedances, latest February 28, 2025, largest 147% over the limit.
- E. coli: 4 limits, 13 violations of any kind, 5 effluent exceedances, latest May 31, 2023, largest 248% over the limit.
- Solids, total suspended: 3 limits, 53 violations of any kind, 2 effluent exceedances, latest February 28, 2025, largest 205% over the limit.
- Chlorine, total residual: 1 limit, 18 violations of any kind, 2 effluent exceedances, latest October 31, 2013, largest 82% over the limit.
- Flow, in conduit or thru treatment plant: 2 limits, 34 violations of any kind, 0 effluent exceedances.
Oklahoma holds 197 Publicly owned treatment works coverages of this permit type in EPA’s file; 101 were issued before OK0037818.
Coverages issued nearest OK0037818
- July 28, 2017: GREEN COUNTRY SEWER CO-SUNRISE, Wagoner County, OK0034754, held by Green Country Sewer Company
- August 4, 2017: CHOUTEAU PWA, Chouteau, OK0022764, held by Chouteau PWA
- August 18, 2017: DRUMRIGHT UTILITIES TRUST, Drumright, OK0022501, held by Drumright Utilities Trust
- August 18, 2017: WETUMKA NORTH WWTF, Wetumka, OK0032425, held by Wetumka North WWTF
- August 21, 2017: NOWATA, CITY OF, Nowata, OK0025470, held by Nowata, City of
- September 12, 2017: CLEVELAND SOUTH WWTP, Cleveland, OK0028347, held by Cleveland, City of (South)
- October 9, 2017: GROVE MSA, Grove, OK0028886, held by Grove Municipal Service Authority
- October 25, 2017: STONEY RESORT, Jay, OK0037842, held by Pine Island RV Resort, Inc.
- November 9, 2017: PITTSBURG CO RWD #20 -- CARLTON LANDING WWTF, Eufaula, OK0100625, held by Pittsburg Co RWD #20
- December 11, 2017: TULSA MUA - NORTH, Tulsa, OK0026221, held by Tulsa MUA - Northside
CALVIN PWA among its neighbors
EPA’s permit file holds 1 discharge permits in the Cindy Creek-Canadian River subwatershed (HUC 110902020606), OK0037818 among them. Its county holds 6, 0 of them major permits; OK0037818 is a minor permit.
Identity
| Facility as filed | CALVIN PWA |
|---|---|
| Permittee as filed | Calvin PWA |
| NPDES ID | OK0037818 |
| 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 | September 5, 2017 |
| Expiration date | September 30, 2022 |
| Issuing agency | ODEQ |
| Address | Calvin, Township Of, OK 74531 |
| Receiving water | 220600011028_00 trib/ South Canadian R. |
| Subwatershed | Cindy Creek-Canadian River (HUC 110902020606) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 7Pollutants on file
- 6Under a numeric limit
- 7With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| pH | 2 | 76 | 42 | February 28, 2011 | |
| Coliform, fecal general | 0 | 69 | 41 | September 30, 2017 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 64 | 13 | February 28, 2025 | 147% over the limit |
| E. coli | 4 | 13 | 5 | May 31, 2023 | 248% over the limit |
| Solids, total suspended | 3 | 53 | 2 | February 28, 2025 | 205% over the limit |
| Chlorine, total residual | 1 | 18 | 2 | October 31, 2013 | 82% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 34 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES OK0037818.
Inspections
EPA’s inspection file holds no inspection for NPDES OK0037818.
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 OK0037818.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.