TOWN OF VAN HORN SEWAGE TREATMENT PLANT
NPDES ID: TX0107867
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: 11 effluent violations.
Violations
May 31, 2026
pH
0% over limit
Discharged 9.4 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
22% over limit
Discharged 3.14 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
61% over limit
Discharged 144.5 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
28% over limit
Discharged 38.3 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
16% over limit
Discharged 145.75 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
60% over limit
Discharged 1.62 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
3% over limit
Discharged 93.03 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
466% over limit
Discharged 713 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
11% over limit
Discharged 33.15 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
E. coli
401% over limit
Discharged 2000 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
47% over limit
Discharged 44 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
27% over limit
Discharged 2.93 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
E. coli
459% over limit
Discharged 704 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
401% over limit
Discharged 2000 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
January 31, 2026
E. coli
23% over limit
Discharged 490 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
176% over limit
Discharged 347.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 37.2 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
35% over limit
Discharged 2.6 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
December 31, 2025
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
4% over limit
Discharged 31.3 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 10.5 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 32.63 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2025
pH
0% over limit
Discharged 9.7 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 30.86 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 101.833 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, 5-day, 20 deg. C
31% over limit
Discharged 39.3 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
5% over limit
Discharged 94.6 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.5 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
105% over limit
Discharged 184.5 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1% over limit
Discharged 46.17179961 kg/d against a permitted limit of 45.854 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.7 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
74% over limit
Discharged 1.05 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
106% over limit
Discharged 61.88 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
pH
0% over limit
Discharged 9.8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
145% over limit
Discharged 73.54 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
141% over limit
Discharged 216.8 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
53% over limit
Discharged 1.87 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 103 mg/L against a permitted limit of 100 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
June 30, 2025
pH
0% over limit
Discharged 9.7 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
134% over limit
Discharged 210.8 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
155% over limit
Discharged 76.49 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
57% over limit
Discharged 198.25 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
0% over limit
Discharged 138.32017884 kg/d against a permitted limit of 138.016 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
117% over limit
Discharged 272.9 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
119% over limit
Discharged 65.82 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
69% over limit
Discharged 1.23 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.7 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
E. coli
118% over limit
Discharged 870 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
132% over limit
Discharged 208.75 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2025
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
49% over limit
Discharged 44.58 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
551% over limit
Discharged 820 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
5% over limit
Discharged 94.18 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
502% over limit
Discharged 2400 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 9.8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
E. coli
401% over limit
Discharged 2000 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 91.52 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
493% over limit
Discharged 747.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
50% over limit
Discharged 45.05 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
12% over limit
Discharged 51.16579957 kg/d against a permitted limit of 45.854 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
72% over limit
Discharged 1.12 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 90.05 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
135% over limit
Discharged 70.4 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
21% over limit
Discharged 152 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
106% over limit
Discharged 61.8 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
502% over limit
Discharged 2400 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
E. coli
217% over limit
Discharged 400 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
Oxygen, dissolved [DO]
54% over limit
Discharged 1.83 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
6% over limit
Discharged 31.92 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
5% over limit
Discharged 132.5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
E. coli
502% over limit
Discharged 2400 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
November 30, 2024
E. coli
45% over limit
Discharged 580 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
80% over limit
Discharged 226.67 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 120 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 30.99 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
October 31, 2024
BOD, 5-day, 20 deg. C
5% over limit
Discharged 31.62 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
189% over limit
Discharged 260 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, 5-day, 20 deg. C
63% over limit
Discharged 48.76 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
337% over limit
Discharged 393 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
35% over limit
Discharged 2.6 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
300% over limit
Discharged 360 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
75% over limit
Discharged 1 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
89% over limit
Discharged 56.55 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2024
pH
0% over limit
Discharged 9.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
90% over limit
Discharged 57 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
137% over limit
Discharged 213 mg/L against a permitted limit of 90 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
39% over limit
Discharged 2.45 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 109 mg/L against a permitted limit of 100 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)