Clean Water Act discharge permit · NPDES OH0021181
MIDDLEFIELD WWTP, Middlefield, OH: NPDES OH0021181 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 43Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
MIDDLEFIELD WWTP, held by Middlefield Village of, holds NPDES permit OH0021181, which discharges to Tare Creek. EPA’s file records it issued August 10, 2016 and expiring August 31, 2021. 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 | MIDDLEFIELD WWTP |
|---|---|
| Permittee as filed | Middlefield Village of |
| NPDES ID | OH0021181 |
| 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 | August 10, 2016 |
| Expiration date | August 31, 2021 |
| Address | Middlefield, OH 44062 |
| Receiving water | Tare Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Tare Creek-Cuyahoga River (HUC 041100020103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 55Pollutants on file
- 43Under a numeric limit
- 38With 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 |
|---|---|---|---|---|---|
| Copper, total recoverable | 4 | 104 | 100 | February 28, 2026 | 196% over the limit |
| Cadmium, total recoverable | 2 | 25 | 23 | March 31, 2007 | 416% over the limit |
| Phosphorus, total [as P] | 8 | 28 | 20 | August 31, 2023 | 80% over the limit |
| Nitrogen, ammonia total [as N] | 12 | 18 | 10 | February 28, 2010 | 236% over the limit |
| Mercury, total low level | 4 | 13 | 9 | August 31, 2023 | 315% over the limit |
| Oil and grease [soxhlet extr.] tot. | 1 | 2 | 2 | December 31, 2015 | 60% over the limit |
| E. coli, MTEC-MF | 10 | 19 | 1 | July 31, 2018 | 294% over the limit |
| Mercury, total [low level] | 0 | 1 | 1 | February 28, 2011 | 150% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 8 | 6 | 0 | ||
| Temperature, water deg. centigrade | 6 | 6 | 0 | ||
| pH | 6 | 6 | 0 | ||
| Solids, total suspended | 6 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 6 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 6 | 6 | 0 | ||
| Oxygen, dissolved [DO] | 3 | 3 | 0 | ||
| Phosphate, ortho, dissolved [as P] | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 2 | 2 | 0 | ||
| Nickel, total recoverable | 2 | 2 | 0 | ||
| Zinc, total recoverable | 2 | 2 | 0 | ||
| Lead, total recoverable | 2 | 2 | 0 | ||
| Chromium, total recoverable | 2 | 2 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Solids, total dissolved- 180 deg. C | 2 | 2 | 0 | ||
| Overflows | 2 | 2 | 0 | ||
| Coliform, fecal MF, MFC broth, 44.5 C | 0 | 2 | 0 | ||
| Cyanide, free available | 0 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 2 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 0 | 2 | 0 | ||
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 0 | ||
| %Effect Static Renewal 96Hr Acute Pimephales promelas | 0 | 2 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| %Effect Static Renewal 7Day Chronic Pimephales promelas | 0 | 2 | 0 | ||
| pH, maximum | 1 | 1 | 0 | ||
| pH, minimum | 1 | 1 | 0 | ||
| Oil and grease, hexane extr method | 0 | 1 | 0 | ||
| Biosolids weight indluding admixtures | 4 | 0 | 0 | ||
| Sludge weight, dry | 4 | 0 | 0 | ||
| Nitrogen, ammonia in bottom deposits | 2 | 0 | 0 | ||
| Phosphorous, total, in bottom deposits | 2 | 0 | 0 | ||
| Cyanide, free-water plus wastewaters | 2 | 0 | 0 | ||
| Potassium, in bottom deposits | 2 | 0 | 0 | ||
| Sludge waste from secondary clarifiers | 2 | 0 | 0 | ||
| Arsenic, dry weight | 1 | 0 | 0 | ||
| Cadmium, in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Copper in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Lead, total dry weight [as Pb] | 1 | 0 | 0 | ||
| Nickel, tot in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Zinc in bottom deposits [dry wgt] | 1 | 0 | 0 | ||
| Selenium, dry weight | 1 | 0 | 0 | ||
| Fecal coliform in sludge, CFU/gram | 1 | 0 | 0 | ||
| Mercury, tot in bot deposits [dry wgt] | 1 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 1 | 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 OH0021181.
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.