Clean Water Act discharge permit · NPDES IN0020770
MIDDLETOWN WWTP, Middletown, IN: NPDES IN0020770 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
MIDDLETOWN WWTP holds NPDES permit IN0020770, which discharges to Fall Creek To W. Fork White River. EPA’s file records it issued April 30, 2018 and expiring June 30, 2023.
MIDDLETOWN WWTP, Middletown, Indiana: Individual permit IN0020770; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued April 30, 2018, term to June 30, 2023, by IDEM; discharges to FALL CREEK TO W. FORK WHITE RIVER.
- Chlorine, total residual: 4 limits, 133 violations of any kind, 118 effluent exceedances, latest July 31, 2026, largest 2,417% over the limit.
- E. coli, colony forming units [CFU]: 3 limits, 41 violations of any kind, 32 effluent exceedances, latest July 31, 2026, largest 930% over the limit.
- Phosphorus, total [as P]: 1 limit, 36 violations of any kind, 31 effluent exceedances, latest May 31, 2026, largest 260% over the limit.
- Solids, total suspended: 4 limits, 37 violations of any kind, 25 effluent exceedances, latest May 31, 2026, largest 349% over the limit.
- Nitrogen, ammonia total [as N]: 8 limits, 30 violations of any kind, 18 effluent exceedances, latest December 31, 2025, largest 300% over the limit.
- pH: 2 limits, 23 violations of any kind, 12 effluent exceedances, latest October 31, 2020.
- Oxygen, dissolved [DO]: 1 limit, 16 violations of any kind, 5 effluent exceedances, latest July 31, 2023, largest 31% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 4 limits, 17 violations of any kind, 1 effluent exceedance, latest June 30, 2026, largest 76% over the limit.
- Duration: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Overflow volume [SS0 volume, CSO volume]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Precipitation, monthly accumulation: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Discharge event observation [Visual Monitoring]: 3 limits, 12 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 1 limit, 10 violations of any kind, 0 effluent exceedances.
- Phosphorus, total percent removal: 1 limit, 8 violations of any kind, 0 effluent exceedances.
- Number of Events: 2 limits, 6 violations of any kind, 0 effluent exceedances.
- Flow, wastewater by-passing trtmnt plant: 0 limits, 3 violations of any kind, 0 effluent exceedances.
- Flow, total: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- May 26, 2026: Management Practice Violations - Failure to Conduct Inspections (ST6).
- May 26, 2026: PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] (ST6).
- May 26, 2026: Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) (ST6).
- May 26, 2026: Effluent Violations - Numeric effluent violation (ST6).
- May 26, 2026: Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment (ST6).
- May 26, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
- May 26, 2026: Effluent Violations - Narrative Effluent Violation (ST6).
- May 26, 2026: Evaluation (S).
- May 26, 2026: Evaluation (S).
- May 26, 2026: Notice of Noncompliance Issued (State).
- May 26, 2026: Notice of Noncompliance Issued (State).
Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 171 were issued before IN0020770. MIDDLETOWN WWTP holds 2 permits in Indiana.
Other permits held by MIDDLETOWN WWTP
- MIDDLETOWN WWTP, Middletown: INL020770, issued January 1, 2021
Coverages issued nearest IN0020770
- April 2, 2018: PAYNETOWN SRA WWTP, Bloomington, IN0030163, held by PAYNETOWN STATE RECREATION AREA
- April 2, 2018: KNIGHTSTOWN WWTP, Knightstown, IN0040177
- April 2, 2018: LYNNVILLE WWTP, Lynnville, IN0040282, held by LYNNVILLE WWTP
- April 10, 2018: MULBERRY WWTP, Mulberry, IN0031976
- April 30, 2018: PORTLAND WWTP, Portland, IN0020095
- April 30, 2018: CORYDON WWTP, Corydon, IN0020893
- April 30, 2018: HARTSVILLE WWTP, Hartsville, IN0021075
- April 30, 2018: DALE MUNICIPAL WWTP, Dale, IN0021598, held by DALE WASTEWATER TREATMENT PLANT
- April 30, 2018: GAS CITY WWTP, Gas City, IN0022985
- April 30, 2018: PRINCETON WWTP, Princeton, IN0024392, held by PRINCETON WASTEWATER TREATMENT PLANT
MIDDLETOWN WWTP among its neighbors
EPA’s permit file holds 2 discharge permits in the Honey Creek-Fall Creek subwatershed (HUC 051202010801), IN0020770 among them. Its county holds 32, 2 of them major permits; IN0020770 is a minor permit.
Other permits in the Honey Creek-Fall Creek subwatershed (HUC 051202010801)
- CANDACE LEE FINK WETLAND BANK, Middleton: INRA12651, minor permit, permit term to February 13, 2029
Identity
| Facility as filed | MIDDLETOWN WWTP |
|---|---|
| Permittee as filed | MIDDLETOWN WWTP |
| NPDES ID | IN0020770 |
| 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 | April 30, 2018 |
| Expiration date | June 30, 2023 |
| Issuing agency | IDEM |
| Address | Middletown, IN 47356 |
| Receiving water | FALL CREEK TO W. FORK WHITE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Honey Creek-Fall Creek (HUC 051202010801) |
| Program components on file | Biosolids, CSO, POTW |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 17Pollutants on file
- 16Under a numeric limit
- 17With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 4 | 133 | 118 | July 31, 2026 | 2,417% over the limit |
| E. coli, colony forming units [CFU] | 3 | 41 | 32 | July 31, 2026 | 930% over the limit |
| Phosphorus, total [as P] | 1 | 36 | 31 | May 31, 2026 | 260% over the limit |
| Solids, total suspended | 4 | 37 | 25 | May 31, 2026 | 349% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 30 | 18 | December 31, 2025 | 300% over the limit |
| pH | 2 | 23 | 12 | October 31, 2020 | |
| Oxygen, dissolved [DO] | 1 | 16 | 5 | July 31, 2023 | 31% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 17 | 1 | June 30, 2026 | 76% over the limit |
| Duration | 3 | 12 | 0 | ||
| Overflow volume [SS0 volume, CSO volume] | 3 | 12 | 0 | ||
| Precipitation, monthly accumulation | 3 | 12 | 0 | ||
| Discharge event observation [Visual Monitoring] | 3 | 12 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 10 | 0 | ||
| Phosphorus, total percent removal | 1 | 8 | 0 | ||
| Number of Events | 2 | 6 | 0 | ||
| Flow, wastewater by-passing trtmnt plant | 0 | 3 | 0 | ||
| Flow, total | 1 | 2 | 0 |
Inspections, violations and enforcement
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 26, 2026 | Management Practice Violations - Failure to Conduct Inspections | ST6 |
| May 26, 2026 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | ST6 |
| May 26, 2026 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| May 26, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| May 26, 2026 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| May 26, 2026 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 26, 2026 | Effluent Violations - Narrative Effluent Violation | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| May 26, 2026 | Evaluation | S |
| May 26, 2026 | Evaluation | S |
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
| Date | What EPA recorded | Agency |
|---|---|---|
| May 26, 2026 | Notice of Noncompliance Issued | State |
| May 26, 2026 | Notice of Noncompliance Issued | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.