SIDNEY WWTP
NPDES ID: OH0027421
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Di[2-ethylhexyl] phthalate [DEHP]
6% over limit
Discharged 0.439 kg/d against a permitted limit of 0.416 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Di[2-ethylhexyl] phthalate [DEHP]
16% over limit
Discharged 0.0182 mg/L against a permitted limit of 0.0157 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Di[2-ethylhexyl] phthalate [DEHP]
87% over limit
Discharged 0.0294 mg/L against a permitted limit of 0.0157 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Di[2-ethylhexyl] phthalate [DEHP]
30% over limit
Discharged 0.541 kg/d against a permitted limit of 0.416 kg/d (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Di[2-ethylhexyl] phthalate [DEHP]
14% over limit
Discharged 0.0179 mg/L against a permitted limit of 0.0157 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Phosphorous, total, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorous, total, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)