HACKBERRY WWTF
NPDES ID: TX0142859
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: 5 effluent violations.
Violations
May 31, 2026
Solids, total suspended
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
10% over limit
Discharged 1.1 mg/L against a permitted limit of 1 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
120% over limit
Discharged 22 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 2.31 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 17.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
17% over limit
Discharged 5.16197996 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
36% over limit
Discharged 2.72 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
35% over limit
Discharged 2.7 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
55% over limit
Discharged 6.80999994 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
76% over limit
Discharged 3.51 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
53% over limit
Discharged 23 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
42% over limit
Discharged 46.98445961 kg/d against a permitted limit of 33.14199972 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 4.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
123% over limit
Discharged 33.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
53% over limit
Discharged 61 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
59% over limit
Discharged 52.82289956 kg/d against a permitted limit of 33.14199972 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 4.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
85% over limit
Discharged 8.13567993 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
21% over limit
Discharged 1.21 mg/L against a permitted limit of 1 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
65% over limit
Discharged 66 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
95% over limit
Discharged 64.67229946 kg/d against a permitted limit of 33.14199972 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
131% over limit
Discharged 34.6 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
120% over limit
Discharged 4.4 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 11.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
22% over limit
Discharged 12.2 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
145% over limit
Discharged 10.78249991 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
186% over limit
Discharged 5.71 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
523% over limit
Discharged 62.32 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
729% over limit
Discharged 16.58 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
539% over limit
Discharged 28.16161976 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
55% over limit
Discharged 15.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
317% over limit
Discharged 8.33 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
153% over limit
Discharged 11.12753991 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Chlorine, total residual
0% over limit
Discharged 1.02 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.484 MGD against a permitted limit of 0.58 MGD (DAILY AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
153% over limit
Discharged 11.12753991 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
153% over limit
Discharged 11.12753991 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
0% over limit
Discharged 3.16 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 4 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 3.16891997 kg/d against a permitted limit of 21.79199982 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 9.54307992 kg/d against a permitted limit of 33.14199972 kg/d (DAILY AV)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.28602 kg/d against a permitted limit of 2.17919998 kg/d (DAILY AV)
DMR, Limited - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.25 mg/L against a permitted limit of 1 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 8.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
55% over limit
Discharged 15.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
55% over limit
Discharged 15.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
317% over limit
Discharged 8.33 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
317% over limit
Discharged 8.33 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
0% over limit
Discharged 0.87 mg/L against a permitted limit of 4 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 14 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2.4 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.058 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
May 31, 2025
E. coli
181% over limit
Discharged 1121 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
345% over limit
Discharged 560.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
100% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
285% over limit
Discharged 7.69 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
80% over limit
Discharged 18 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
179% over limit
Discharged 12.2897799 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
9% over limit
Discharged 4.35 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
March 31, 2025
E. coli
862% over limit
Discharged 1212.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
838% over limit
Discharged 18.75 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
3% over limit
Discharged 10.25 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
50% over limit
Discharged 22.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
507% over limit
Discharged 2420 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
486% over limit
Discharged 25.80989978 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
171% over limit
Discharged 11.9356599 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
293% over limit
Discharged 7.85 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
94% over limit
Discharged 19.4 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
861% over limit
Discharged 1210.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
507% over limit
Discharged 2420 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
25% over limit
Discharged 50 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
100% over limit
Discharged 8.79851993 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
135% over limit
Discharged 4.69 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 19.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
271% over limit
Discharged 7.42 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
25% over limit
Discharged 12.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
169% over limit
Discharged 11.8403199 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
7% over limit
Discharged 0.93 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
18% over limit
Discharged 2.368 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
4% over limit
Discharged 4.57450396 kg/d against a permitted limit of 4.40379996 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 2 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 3.83493797 kg/d against a permitted limit of 21.79199982 kg/d (DAILY AV)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)