CITY OF THORNTON WWTP
NPDES ID: TX0075639
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: 3 effluent violations.
Violations
May 31, 2026
Solids, total suspended
64% over limit
Discharged 32.8 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
26% over limit
Discharged 3.89985997 kg/d against a permitted limit of 3.0872 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
100% over limit
Discharged 40 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
8% over limit
Discharged 21.5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
117% over limit
Discharged 43.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
127% over limit
Discharged 45.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 67 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
95% over limit
Discharged 39 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 3.16437997 kg/d against a permitted limit of 3.0872 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
19% over limit
Discharged 23.8 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
135% over limit
Discharged 47 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
166% over limit
Discharged 53.25 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 70 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
73% over limit
Discharged 5.32995996 kg/d against a permitted limit of 3.0872 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
89% over limit
Discharged 5.84751995 kg/d against a permitted limit of 3.0872 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
12% over limit
Discharged 22.3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
60% over limit
Discharged 32 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
68% over limit
Discharged 33.5 mg/L against a permitted limit of 20 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 (SINGGRAB)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)