PEKIN STP #1
NPDES ID: IL0034495
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
December 31, 2025
Copper, total [as Cu]
187% over limit
Discharged 0.13 mg/L against a permitted limit of 0.0453 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Copper, total [as Cu]
30% over limit
Discharged 0.059 mg/L against a permitted limit of 0.0453 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Copper, total [as Cu]
6% over limit
Discharged 2.83976998 kg/d against a permitted limit of 2.67859998 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
452% over limit
Discharged 0.25 mg/L against a permitted limit of 0.0453 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)