VILLAGE OF SHAWNEE WWTP
NPDES ID: OH0127671
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 1 effluent violation.
Violations
April 30, 2026
Oxygen, dissolved [DO]
25% over limit
Discharged 4.5 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
February 28, 2026
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
673% over limit
Discharged 77.3 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
843% over limit
Discharged 28.3 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
5% over limit
Discharged 5.7 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Solids, total suspended
367% over limit
Discharged 56 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
600% over limit
Discharged 105 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
542% over limit
Discharged 28.9 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
317% over limit
Discharged 75 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
January 31, 2026
Oxygen, dissolved [DO]
2% over limit
Discharged 5.9 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
907% over limit
Discharged 151 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
620% over limit
Discharged 72 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
253% over limit
Discharged 15.9 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
522% over limit
Discharged 112 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
165% over limit
Discharged 7.95 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
515% over limit
Discharged 73.8 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
December 31, 2025
Turbidity [severity]
0% over limit
Discharged 1 severity against a permitted limit of 0 severity (MO AVG)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 6 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Overdue
Solids, total suspended
17% over limit
Discharged 21 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Overdue
Solids, total suspended
17% over limit
Discharged 21 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 5.3 kg/d (WKLY MAX)
DMR, Limited - Overdue
Turbidity [severity]
0% over limit
Discharged 1 severity against a permitted limit of 0 severity (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 2.49 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 1.6 kg/d (WKLY MAX)
DMR, Limited - Overdue
Temperature, water deg. centigrade
0% over limit
Discharged 10.8 deg C against a permitted limit of 0 deg C (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
83% over limit
Discharged 22 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
83% over limit
Discharged 22 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 4.3 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
70% over limit
Discharged 17 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
70% over limit
Discharged 17 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Sludge waste from secondary clarifiers
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (MO AVG)
DMR, Monitor Only - Overdue
Overflows
0% over limit
Discharged 0 occur/d against a permitted limit of 0 occur/d (DAILY MX)
DMR, Monitor Only - Overdue
Temperature, water deg. centigrade
0% over limit
Discharged 13.9 deg C against a permitted limit of 0 deg C (DAILY MX)
DMR, Monitor Only - Overdue
Overflows
0% over limit
Discharged 0 occur/d against a permitted limit of 0 occur/d (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
333% over limit
Discharged 13 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
333% over limit
Discharged 13 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.2 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 6.4 kg/d (WKLY MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
238% over limit
Discharged 15.2 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
238% over limit
Discharged 15.2 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 kg/d against a permitted limit of 1.1 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
80% over limit
Discharged 27 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
80% over limit
Discharged 27 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.58 SU against a permitted limit of 6.5 SU (DAILY MN)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 3.6 kg/d (MO AVG)
DMR, Limited - Overdue
Sludge waste from secondary clarifiers
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 2.49 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
November 30, 2025
Nitrogen, ammonia total [as N]
133% over limit
Discharged 7 mg/L against a permitted limit of 3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
90% over limit
Discharged 8.54 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)