PARIS, CITY OF-WWTP
NPDES ID: AR0021857
T — SNC: Compliance schedule reporting violation
The facility was more than 30 days late reporting progress on its compliance schedule.
This quarter: 4 effluent violations, 4 permit schedule violations.
Violations
April 30, 2026
Nitrogen, ammonia total [as N]
30% over limit
Discharged 7.26 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
48% over limit
Discharged 3.1 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
47% over limit
Discharged 22.36857981 kg/d against a permitted limit of 15.20899987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
8% over limit
Discharged 6.03 mg/L against a permitted limit of 5.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Oxygen, dissolved [DO]
17% over limit
Discharged 5 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
January 31, 2026
Oxygen, dissolved [DO]
5% over limit
Discharged 5.7 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
November 30, 2025
Oxygen, dissolved [DO]
17% over limit
Discharged 5 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
21% over limit
Discharged 6.07 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 6.2 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Oxygen, dissolved [DO]
7% over limit
Discharged 2.8 mg/L against a permitted limit of 3 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 5.53 mg/L against a permitted limit of 5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
57% over limit
Discharged 8.8 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
18% over limit
Discharged 15.97625987 kg/d against a permitted limit of 13.57459989 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Coliform, fecal general
7% over limit
Discharged 213 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
25% over limit
Discharged 500 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
29% over limit
Discharged 7.2 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
63% over limit
Discharged 9.1 mg/L against a permitted limit of 5.6 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
35% over limit
Discharged 0.033596 kg/d against a permitted limit of 0.02497 kg/d (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
445% over limit
Discharged 0.06 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, carbonaceous [5 day, 20 C]
9% over limit
Discharged 29.57355975 kg/d against a permitted limit of 27.19459977 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
April 30, 2025
Chlorine, total residual
900% over limit
Discharged 0.11 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2025
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
809% over limit
Discharged 0.1 mg/L against a permitted limit of 0.011 mg/L (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)