Clean Water Act discharge permit · NPDES OH0078441
MONTEZUMA CLUB ISLAND WWTP, Celina, OH: NPDES OH0078441 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MONTEZUMA CLUB ISLAND WWTP, held by Mercer Co Brd of Comm, holds NPDES permit OH0078441. EPA’s file records it issued January 9, 2023 and expiring January 31, 2028. 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 | MONTEZUMA CLUB ISLAND WWTP |
|---|---|
| Permittee as filed | Mercer Co Brd of Comm |
| NPDES ID | OH0078441 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | January 9, 2023 |
| Expiration date | January 31, 2028 |
| Address | Celina, OH 45822 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Beaver Creek (HUC 051201010202) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 15Under a numeric limit
- 16With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 10 | 11 | 4 | June 30, 2023 | 51% over the limit |
| Oxygen, dissolved [DO] | 2 | 7 | 4 | June 30, 2023 | 69% over the limit |
| pH | 8 | 10 | 2 | April 30, 2022 | |
| E. coli, MTEC-MF | 8 | 8 | 2 | August 31, 2021 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 8 | 0 | ||
| Nitrite + Nitrate total [as N] | 10 | 8 | 0 | ||
| Temperature, water deg. centigrade | 6 | 8 | 0 | ||
| Solids, total suspended | 8 | 4 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 8 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 4 | 0 | ||
| Flow, maximum during 24 hr period | 4 | 2 | 0 | ||
| Streamflow | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 2 | 0 | ||
| Overflows | 2 | 2 | 0 | ||
| Rainfall | 0 | 2 | 0 | ||
| Oil and grease, hexane extr method | 3 | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 8, 2026 | Biosolids: Other Management Practice Violation | ST6 |
| July 8, 2026 | Biosolids - Land Application: Pathogen Reduction Violation | 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
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, OH0078441.
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 OH0078441 there.
Nearby on the register
- Discharge permits in Celina
- Every permit record in Celina, A to Z
- Discharge permits in Ohio
- Every permit record in Ohio, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.