BARRE W W T F
NPDES ID: MAG580018
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
February 28, 2026
BOD, 5-day, 20 deg. C
Limit violation
Discharged 58.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 40.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Copper, total [as Cu]
4% over limit
Discharged 0.027 mg/L against a permitted limit of 0.026 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 37.7 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
13% over limit
Discharged 1.13 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 19.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total [as Cu]
23% over limit
Discharged 0.032 mg/L against a permitted limit of 0.026 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
53% over limit
Discharged 0.0306 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Copper, total [as Cu]
29% over limit
Discharged 0.0257 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
1% over limit
Discharged 0.0263 mg/L against a permitted limit of 0.026 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Copper, total [as Cu]
78% over limit
Discharged 0.0356 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
77% over limit
Discharged 0.046 mg/L against a permitted limit of 0.026 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Copper, total [as Cu]
60% over limit
Discharged 0.0417 mg/L against a permitted limit of 0.026 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
16% over limit
Discharged 1.04 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
70% over limit
Discharged 0.034 mg/L against a permitted limit of 0.02 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Phosphorus, total [as P]
44% over limit
Discharged 1.3 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
0% over limit
Discharged 411 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
14% over limit
Discharged 38.81699967 kg/d against a permitted limit of 34.04999971 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
67% over limit
Discharged 56.79539952 kg/d against a permitted limit of 34.04999971 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
11% over limit
Discharged 33.2 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
211% over limit
Discharged 159.58099866 kg/d against a permitted limit of 51.30199957 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
76% over limit
Discharged 90.25519924 kg/d against a permitted limit of 51.30199957 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
193% over limit
Discharged 131.7 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
67% over limit
Discharged 75 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
61% over limit
Discharged 48.2 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
65% over limit
Discharged 1.65 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 46 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
8% over limit
Discharged 0.97 mg/L against a permitted limit of 0.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)