NPDES ID: COG591226
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: 4 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
1303% over limit
Discharged 421 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 42.1 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
36% over limit
Discharged 36.7 mg/L against a permitted limit of 27 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
36% over limit
Discharged 36.7 mg/L against a permitted limit of 27 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
38% over limit
Discharged 40 mg/L against a permitted limit of 29 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
38% over limit
Discharged 40 mg/L against a permitted limit of 29 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
10% over limit
Discharged 37.3 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
10% over limit
Discharged 37.3 mg/L against a permitted limit of 34 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
5% over limit
Discharged 39.8 mg/L against a permitted limit of 38 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
5% over limit
Discharged 39.8 mg/L against a permitted limit of 38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
2% over limit
Discharged 34.6 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 34.6 mg/L against a permitted limit of 34 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
11% over limit
Discharged 38.9 mg/L against a permitted limit of 35 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 38.9 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
56% over limit
Discharged 117 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
31% over limit
Discharged 59 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
97% over limit
Discharged 59 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 117 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
47% over limit
Discharged 78 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
May 31, 2025
Chloride [as Cl]
318% over limit
Discharged 158.65 mg/L against a permitted limit of 38 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Chloride [as Cl]
424% over limit
Discharged 199 mg/L against a permitted limit of 38 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, percent removal
13% over limit
Discharged 83 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Chloride [as Cl]
518% over limit
Discharged 235 mg/L against a permitted limit of 38 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Zinc, potentially dissolved
28% over limit
Discharged 0.11400001 mg/L against a permitted limit of 0.089 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Chloride [as Cl]
13% over limit
Discharged 283 mg/L against a permitted limit of 250 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Chloride [as Cl]
674% over limit
Discharged 294 mg/L against a permitted limit of 38 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Chloride [as Cl]
695% over limit
Discharged 302 mg/L against a permitted limit of 38 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Chloride [as Cl]
21% over limit
Discharged 302 mg/L against a permitted limit of 250 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)