CARROLLTON WATER PLANT
NPDES ID: LA0000086
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 3 single-event violations.
Violations
March 31, 2026
pH
0% over limit
Discharged 9.18 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1200% over limit
Discharged 2.6 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
2300% over limit
Discharged 4.8 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
pH
0% over limit
Discharged 9.58 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1720% over limit
Discharged 3.64 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
2050% over limit
Discharged 4.3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.39 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
November 30, 2025
Chlorine, total residual
2200% over limit
Discharged 4.6 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.17 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
Chlorine, total residual
2000% over limit
Discharged 4.2 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
1600% over limit
Discharged 3.4 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.01 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
August 31, 2025
Chlorine, total residual
2050% over limit
Discharged 4.3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Chlorine, total residual
2300% over limit
Discharged 4.8 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
1600% over limit
Discharged 3.4 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
pH
0% over limit
Discharged 9.13 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1505% over limit
Discharged 3.21 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Chlorine, total residual
1650% over limit
Discharged 3.5 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 9.36 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1700% over limit
Discharged 3.6 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
pH
0% over limit
Discharged 9.03 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1550% over limit
Discharged 3.3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Carbon, tot organic [TOC]
8% over limit
Discharged 5.4 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1600% over limit
Discharged 3.4 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
1710% over limit
Discharged 3.62 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
1550% over limit
Discharged 3.3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Chlorine, total residual
1650% over limit
Discharged 3.5 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.13 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
1400% over limit
Discharged 3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Chlorine, total residual
1050% over limit
Discharged 2.3 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Chlorine, total residual
1950% over limit
Discharged 4.1 mg/L against a permitted limit of 0.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Carbon, tot organic [TOC]
40% over limit
Discharged 7 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)