SULPHUR SPRINGS, CITY OF
NPDES ID: AR0051179
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations.
Violations
May 31, 2026
Chlorine, total residual
767% over limit
Discharged 0.52 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
April 30, 2026
Chlorine, total residual
83% over limit
Discharged 0.11 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
467% over limit
Discharged 0.34 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
6067% over limit
Discharged 3.7 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2026
Chlorine, total residual
35900% over limit
Discharged 21.6 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
15567% over limit
Discharged 9.4 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
November 30, 2025
Chlorine, total residual
1150% over limit
Discharged 0.75 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
Chlorine, total residual
22900% over limit
Discharged 13.8 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
1400% over limit
Discharged 0.9 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
July 31, 2025
Chlorine, total residual
417% over limit
Discharged 0.31 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
June 30, 2025
Oxygen, dissolved [DO]
8% over limit
Discharged 4.6 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Chlorine, total residual
133% over limit
Discharged 0.14 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
May 31, 2025
Oxygen, dissolved [DO]
10% over limit
Discharged 4.5 mg/L against a permitted limit of 5 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Chlorine, total residual
633% over limit
Discharged 0.44 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
April 30, 2025
Coliform, fecal general
21% over limit
Discharged 2420 MPN/100mL against a permitted limit of 2000 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Chlorine, total residual
50% over limit
Discharged 0.09 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2025
Chlorine, total residual
650% over limit
Discharged 0.45 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2025
Chlorine, total residual
850% over limit
Discharged 0.57 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
1250% over limit
Discharged 0.81 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
1133% over limit
Discharged 0.74 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
133% over limit
Discharged 0.14 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Chlorine, total residual
700% over limit
Discharged 0.48 mg/L against a permitted limit of 0.06 mg/L (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)