TDCJ ELLIS UNIT WWTP
NPDES ID: TX0031607
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
June 30, 2026
Solids, total suspended
83% over limit
Discharged 73.1 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
65% over limit
Discharged 24.8 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
21% over limit
Discharged 58.11199951 kg/d against a permitted limit of 48.124 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2026
Solids, total suspended
379% over limit
Discharged 71.8 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
175% over limit
Discharged 132.56799889 kg/d against a permitted limit of 48.124 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
570% over limit
Discharged 268 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 2.38 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Flow, in conduit or thru treatment plant
2% over limit
Discharged 0.87 MGD against a permitted limit of 0.85 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
83% over limit
Discharged 27.4 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
67% over limit
Discharged 80.35799932 kg/d against a permitted limit of 48.124 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 41.4 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Flow, in conduit or thru treatment plant
8% over limit
Discharged 0.917 MGD against a permitted limit of 0.85 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 61.28999949 kg/d against a permitted limit of 48.124 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 20.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
28% over limit
Discharged 2.56 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
56% over limit
Discharged 3.12 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
12% over limit
Discharged 7.12779994 kg/d against a permitted limit of 6.356 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
110% over limit
Discharged 4.2 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
29% over limit
Discharged 8.21739993 kg/d against a permitted limit of 6.356 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
7% over limit
Discharged 10.7 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
74% over limit
Discharged 11.03219991 kg/d against a permitted limit of 6.356 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3% over limit
Discharged 10.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
176% over limit
Discharged 5.52 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
142% over limit
Discharged 4.84 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
47% over limit
Discharged 9.35239992 kg/d against a permitted limit of 6.356 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
186% over limit
Discharged 5.72 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 11.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
75% over limit
Discharged 11.12299991 kg/d against a permitted limit of 6.356 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
Flow, in conduit or thru treatment plant
9% over limit
Discharged 0.929 MGD against a permitted limit of 0.85 MGD (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (12 hours ago)