CHAPMAN CORNERS WWTP
NPDES ID: PA0244147
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: 5 effluent violations, 29 reporting violations.
Violations
June 30, 2026
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0 kg/d against a permitted limit of 0.00454 kg/d (MO AVG)
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
Coliform, fecal general
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 50 MPN/100mL (GEO MEAN)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Ultraviolet light transmittance
0% over limit
Discharged 0 % against a permitted limit of 0 % (INST MIN)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)