NPDES ID: PA0044326
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: 1 effluent violation.
Violations
April 30, 2026
Manganese, total [as Mn]
24% over limit
Discharged 1.24 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Manganese, total [as Mn]
27% over limit
Discharged 1.265 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Manganese, total [as Mn]
19% over limit
Discharged 1.185 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Manganese, total [as Mn]
23% over limit
Discharged 2.45 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
117% over limit
Discharged 2.165 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Manganese, total [as Mn]
265% over limit
Discharged 7.29 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
525% over limit
Discharged 6.245 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Manganese, total [as Mn]
860% over limit
Discharged 9.6 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
550% over limit
Discharged 13 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Manganese, total [as Mn]
700% over limit
Discharged 8 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
320% over limit
Discharged 8.4 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Manganese, total [as Mn]
217% over limit
Discharged 6.34 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
510% over limit
Discharged 6.1 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Aluminum, total [as Al]
39% over limit
Discharged 1.04 mg/L against a permitted limit of 0.75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
47% over limit
Discharged 1.47 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
4% over limit
Discharged 0.782 mg/L against a permitted limit of 0.75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Aluminum, total [as Al]
28% over limit
Discharged 0.962 mg/L against a permitted limit of 0.75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
11% over limit
Discharged 2.22 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Manganese, total [as Mn]
73% over limit
Discharged 1.725 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
81% over limit
Discharged 1.36 mg/L against a permitted limit of 0.75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Manganese, total [as Mn]
14% over limit
Discharged 1.136 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
68% over limit
Discharged 1.26 mg/L against a permitted limit of 0.75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Manganese, total [as Mn]
46% over limit
Discharged 1.46 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
25% over limit
Discharged 0.941 mg/L against a permitted limit of 0.75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Aluminum, total [as Al]
124% over limit
Discharged 1.68 mg/L against a permitted limit of 0.75 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Aluminum, total [as Al]
103% over limit
Discharged 1.52 mg/L against a permitted limit of 0.75 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)