OAKLAND CITY WWTP, Oakland City, IN: NPDES IN0021687 discharge permit, effluent exceedances, inspections, penalties

OAKLAND CITY WWTP, Oakland City, Indiana: Individual permit IN0021687; Publicly owned treatment works; Administratively continued; issued September 17, 2019, term to February 28, 2025, by IDEM; discharges to PATOKA R VIA SHY DITCH.

2 of the 16 pollutants listed for NPDES IN0021687 have no violation or effluent exceedance.

• Nitrogen, ammonia total [as N]: 8 limits, 20 violations of any kind, 7 effluent exceedances, latest June 30, 2026, largest 37% over the limit.
• Phosphorus, total [as P]: 4 limits, 5 violations of any kind, 3 effluent exceedances, latest July 31, 2024, largest 47% over the limit.
• Solids, total suspended: 8 limits, 15 violations of any kind, 1 effluent exceedance, latest September 30, 1999, largest 39% over the limit.
• Chlorine, total residual: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest July 31, 2005, largest 88% over the limit.
• BOD, carbonaceous [5 day, 20 C]: 8 limits, 12 violations of any kind.
• Nitrogen, total [as N]: 2 limits, 7 violations of any kind.
• Flow, in conduit or thru treatment plant: 1 limit, 7 violations of any kind.
• pH: 2 limits, 6 violations of any kind.
• Oxygen, dissolved [DO]: 2 limits, 5 violations of any kind.
• Toxicity [acute], Ceriodaphnia dubia: 3 limits, 1 violation of any kind.
• Toxicity [chronic], Ceriodaphnia dubia: 3 limits, 1 violation of any kind.
• Toxicity [acute], Pimephales promelas [Fathead Minnow]: 3 limits, 1 violation of any kind.
• Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 3 limits, 1 violation of any kind.
• Flow, total: 1 limit, 1 violation of any kind.
• E. coli, colony forming units [CFU]: 3 limits.
• Number of Events: 2 limits.

• May 18, 2026: Management Practice Violations - Improper Operation and Maintenance (ST6).
• May 18, 2026: Management Practice Violations - Failure to Develop/Enforce Standards (ST6).
• May 18, 2026: Reconnaissance without Sampling (S).
• May 18, 2026: Notice of Noncompliance Issued (State).

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 337 were issued before IN0021687.

Coverages issued nearest IN0021687

• 2019-09-05: CROTHERSVILLE WWTP, Crothersville: IN0022683
• 2019-09-05: REDKEY WWTP, Redkey: IN0024406
• 2019-09-05: BEAR HIGH WOLF LAKE RSD, Albion: IN0038822, held by BEAR, HIGH, WOLF LAKE REGIONAL SEWER DISTRICT
• 2019-09-05: WORTHINGTON MUNICIPAL WWTP, Worthington: IN0040801
• 2019-09-05: NEWTON COUNTY RWSD PLANT 2, Enos: IN0063479, held by NEWTON COUNTY REGIONAL WATER & SEWER DISTRICT PLANT 2
• 2019-09-17: ASHLEY WWTP, Ashley: IN0022292, held by ASHLEY WWTP, TOWN OF
• 2019-09-17: CRAWFORDSVILLE WWTP, Crawfordsville: IN0032964, held by CRAWFORDSVILLE WWTP, CITY OF
• 2019-09-24: CHESTERTON WWTP, Chesterton: IN0022578, held by CHESTERTON WWTP, TOWN OF
• 2019-09-24: MEDORA WWTP, Medora: IN0023744
• 2019-09-24: SUMMITVILLE WWTP, Summitville: IN0024562

OAKLAND CITY WWTP among its neighbors

7 discharge permits are in the Wheeler Creek-South Fork Pakota River subwatershed (HUC 051202090703); IN0021687 is one. Its county: 52, 2 major; IN0021687 is major permit.

Other permits in the Wheeler Creek-South Fork Pakota River subwatershed (HUC 051202090703)

• 2505858 ZELESTRA SUBSTATION, Oakland City: INRA17919, minor, term to 2031-04-09
• ABANDONED MINE LAND SITE 147 MERIDIAN HIGHWALL, Oakland City: ING040308, minor, term to 2031-02-28
• OAKLAND CITY WATER TREATMENT PLANT, Oakland City: IN0064581, minor, term to 2022-11-30
• PEABODY MIDWEST MINING LLC SOMERVILLE CENTRAL MINE, Oakland City: ING040190, minor, term to 2022-05-31
• PEABODY MIDWEST MINING LLC SOMERVILLE NORTH MINE, Oakland City: ING040019, minor, term to 2020-03-31
• R-39768 WAREX WASTE SITE, Oakland City: INRA09620, minor, term to 2027-04-28