TDCJ ESTELLE UNIT
NPDES ID: TX0092789
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: 7 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
2% over limit
Discharged 10.2 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
255% over limit
Discharged 7.1 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
106% over limit
Discharged 15.93539987 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Chlorine, total residual
1770% over limit
Discharged 1.87 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
289% over limit
Discharged 7.78 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
112% over limit
Discharged 16.38939986 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
45% over limit
Discharged 14.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
208% over limit
Discharged 23.7895998 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
52% over limit
Discharged 15.2 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
450% over limit
Discharged 11 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
900% over limit
Discharged 1 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
88% over limit
Discharged 18.8 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
112% over limit
Discharged 16.38939986 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
1890% over limit
Discharged 1.99 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
314% over limit
Discharged 8.28 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Chlorine, total residual
2100% over limit
Discharged 2.2 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Oxygen, dissolved [DO]
4% over limit
Discharged 4.8 mg/L against a permitted limit of 5 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Chlorine, total residual
3600% over limit
Discharged 3.7 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
August 31, 2025
E. coli
201% over limit
Discharged 1200 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
7% over limit
Discharged 42.7 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
29% over limit
Discharged 19.3 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
133% over limit
Discharged 23.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
3% over limit
Discharged 7.18 mg/L against a permitted limit of 7 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
282% over limit
Discharged 29.46459975 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
695% over limit
Discharged 15.9 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
8% over limit
Discharged 16.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
15% over limit
Discharged 8.08 mg/L against a permitted limit of 7 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
850% over limit
Discharged 19 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
334% over limit
Discharged 33.45979972 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
140% over limit
Discharged 24 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
365% over limit
Discharged 35.8659997 kg/d against a permitted limit of 7.71799994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
3300% over limit
Discharged 3.4 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
530% over limit
Discharged 12.6 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
79% over limit
Discharged 17.9 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Chlorine, total residual
920% over limit
Discharged 1.02 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
920% over limit
Discharged 1.02 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Chlorine, total residual
91% over limit
Discharged 0.09 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
October 31, 2024
Chlorine, total residual
3100% over limit
Discharged 3.2 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
900% over limit
Discharged 1 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
August 31, 2024
Chlorine, total residual
3740% over limit
Discharged 3.84 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
8% over limit
Discharged 4.6 mg/L against a permitted limit of 5 mg/L (MO MIN)
DMR, Limited - Numeric Violation
July 31, 2024
Chlorine, total residual
970% over limit
Discharged 1.07 mg/L against a permitted limit of 0.1 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
16% over limit
Discharged 4.2 mg/L against a permitted limit of 5 mg/L (MO MIN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)