WEST CHICAGO ENVIRONMENTAL RESPONSE TRUST
NPDES ID: IL0063495
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Mentions
Effluent violation at West Chicago Environmental Response Trust
West Chicago Environmental Response Trust is in significant non-compliance for an effluent violation on its Clean Water Act permit, having discharged pollutants in excess of the monthly average limit. The trust manages remaining radiological remediation and ecological restoration obligations across Kress Creek and West Branch Du Page River properties, expected to conclude in 2027.
Keep readingViolations
May 31, 2026
Nickel, total [as Ni]
118% over limit
Discharged 0.024 mg/L against a permitted limit of 0.011 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nickel, total [as Ni]
93% over limit
Discharged 0.0069916 kg/d against a permitted limit of 0.003632 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nickel, total [as Ni]
103% over limit
Discharged 0.0223 mg/L against a permitted limit of 0.011 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (6 months ago)
Last confirmed
October 15, 2026 (8 days ago)