US STEEL/KEEWATIN TACONITE
NPDES ID: MN0031879
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
September 30, 2024
Solids, total suspended
193% over limit
Discharged 88 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)
Source:EPA ECHO facility report