CLINTON EAST WW TREATMENT FACILITY
NPDES ID: AR0048836
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: 3 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
48% over limit
Discharged 3.1 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
122% over limit
Discharged 7.1 mg/L against a permitted limit of 3.2 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
pH
0% over limit
Discharged 10.1 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
41% over limit
Discharged 8.9 mg/L against a permitted limit of 6.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
79% over limit
Discharged 11.3 mg/L against a permitted limit of 6.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
55% over limit
Discharged 14.7 mg/L against a permitted limit of 9.5 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
October 31, 2025
pH
0% over limit
Discharged 4.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
September 30, 2025
Whole Effluent Toxicity [WET] - P. promelas
Limit violation
Discharged 32 % against a permitted limit of 100 % (DLYAVMIN)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
Limit violation
Discharged 32 % against a permitted limit of 100 % (7 DA MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 4.7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
Limit violation
Discharged 32 % against a permitted limit of 80 % (DLYAVMIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
50% over limit
Discharged 4.8 mg/L against a permitted limit of 3.2 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Whole Effluent Toxicity [WET] - P. promelas
Limit violation
Discharged 32 % against a permitted limit of 80 % (7 DA MIN)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, carbonaceous [5 day, 20 C]
73% over limit
Discharged 26 mg/L against a permitted limit of 15 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
76% over limit
Discharged 3.7 mg/L against a permitted limit of 2.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
63% over limit
Discharged 5.2 mg/L against a permitted limit of 3.2 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)