PLAIN CITY WWTP
NPDES ID: OH0027057
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 32 effluent violations, 5 permit schedule violations.
Violations
May 31, 2026
Phosphorus, total [as P]
4674% over limit
Discharged 95 kg/d against a permitted limit of 1.99 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
5138% over limit
Discharged 22 mg/L against a permitted limit of 0.42 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
250% over limit
Discharged 21 mg/L against a permitted limit of 6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
652% over limit
Discharged 3.16 mg/L against a permitted limit of 0.42 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
13710% over limit
Discharged 87 mg/L against a permitted limit of 0.63 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
817% over limit
Discharged 66 mg/L against a permitted limit of 7.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (6 days ago)