PETERSBURG WTP
NPDES ID: IL0077691
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
Violations
February 28, 2026
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
January 31, 2026
Chlorine, total residual
160% over limit
Discharged 0.13 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
160% over limit
Discharged 0.13 mg/L against a permitted limit of 0.05 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)