JOLIET AUX SABLE CREEK BASIN WWTP

NPDES ID: IL0076414

T — SNC: Compliance schedule reporting violation

The facility was more than 30 days late reporting progress on its compliance schedule.

This quarter: 1 effluent violation.

Violations

June 30, 2026

Nitrogen, ammonia total [as N]

11% over limit

Discharged 4.76 mg/L against a permitted limit of 4.3 mg/L (DAILY MX)

DMR, Limited - Numeric Violation

First flagged

April 14, 2026 (4 months ago)

Last confirmed

August 15, 2026 (4 hours ago)