UNION HILL ISD WWTP
NPDES ID: TX0118451
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: 1 effluent violation.
Violations
April 30, 2026
Solids, total suspended
185% over limit
Discharged 57 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
E. coli
1821% over limit
Discharged 2420 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 (SINGGRAB)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
768% over limit
Discharged 173.5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
346% over limit
Discharged 2.63319998 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
183% over limit
Discharged 184 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
713% over limit
Discharged 162.5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
340% over limit
Discharged 286 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
315% over limit
Discharged 2.45159998 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
85% over limit
Discharged 1.08959999 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
38% over limit
Discharged 0.81719999 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
12% over limit
Discharged 73 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
265% over limit
Discharged 73 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
172% over limit
Discharged 54.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
3640% over limit
Discharged 748 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
377% over limit
Discharged 2.81479998 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
36165% over limit
Discharged 7253 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
4554% over limit
Discharged 27.46699977 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
33% over limit
Discharged 167 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
26515% over limit
Discharged 17300 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
2515% over limit
Discharged 1700 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
146% over limit
Discharged 160 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
540% over limit
Discharged 128 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
108% over limit
Discharged 41.5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
2% over limit
Discharged 66.3 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
52% over limit
Discharged 30.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 66.9 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 30.7 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
19% over limit
Discharged 0.70369999 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
65% over limit
Discharged 33 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
69% over limit
Discharged 0.99879999 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
50% over limit
Discharged 30 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
13% over limit
Discharged 22.5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
97% over limit
Discharged 39.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
69% over limit
Discharged 33.8 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5% over limit
Discharged 68 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
62% over limit
Discharged 0.95339999 kg/d against a permitted limit of 0.5902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
165% over limit
Discharged 52.9 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, 5-day, 20 deg. C
22% over limit
Discharged 24.4 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)