OAKLANE ACRES SUBDIVISION STP
NPDES ID: IL0022152
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: 2 single-event violations.
Violations
January 31, 2025
Chlorine, total residual
60% over limit
Discharged 0.08 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Coliform, fecal general
110% over limit
Discharged 840 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
40% over limit
Discharged 0.07 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Coliform, fecal general
525% over limit
Discharged 2500 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
80% over limit
Discharged 0.09 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Oxygen, dissolved [DO]
20% over limit
Discharged 4.8 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
4% over limit
Discharged 4.8 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
610% over limit
Discharged 2840 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)