GIBSONBURG WWTP
NPDES ID: OH0029122
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations, 1 permit schedule violation.
Violations
June 30, 2026
Mercury, total low level
232% over limit
Discharged 0.00000431 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total low level
88% over limit
Discharged 0.0000047 kg/d against a permitted limit of 0.0000025 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
124% over limit
Discharged 10.1 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
August 31, 2025
Mercury, total low level
10% over limit
Discharged 0.00000143 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
2% over limit
Discharged 2.9 kg/d against a permitted limit of 2.84 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (6 days ago)