MORENCI WWSL
NPDES ID: MIG580010
T — SNC: Compliance schedule reporting violation
The facility was more than 30 days late reporting progress on its compliance schedule.
This quarter: 13 single-event violations, 1 permit schedule violation.
Violations
November 30, 2025
Solids, total suspended
48% over limit
Discharged 59 mg/L against a permitted limit of 40 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 47.5 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Oxygen, dissolved [DO]
13% over limit
Discharged 4.36 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
20% over limit
Discharged 120 mg/L against a permitted limit of 100 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
25% over limit
Discharged 49.9 mg/L against a permitted limit of 40 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 49.9 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)