ONSTED WWTP
NPDES ID: MI0028304
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 1 single-event violation, 1 permit schedule violation.
Violations
December 31, 2025
Mercury, total [as Hg]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.000003 mg/L (12MO AVG)
DMR, Limited - Overdue
Mercury, total [as Hg]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 4.7 mg/L (MO AVG)
DMR, Limited - Overdue
Chloride [as Cl]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - 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
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)