GRAND PRARIE WWTP
NPDES ID: TX0140392
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: 8 effluent violations.
Violations
June 30, 2026
Phosphorus, total [as P]
42% over limit
Discharged 0.71 mg/L against a permitted limit of 0.5 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
175% over limit
Discharged 550 MPN/100mL against a permitted limit of 200 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
May 31, 2026
Phosphorus, total [as P]
70% over limit
Discharged 5.1 mg/L against a permitted limit of 3 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
81% over limit
Discharged 0.82173999 kg/d against a permitted limit of 0.454 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
158% over limit
Discharged 1.29 mg/L against a permitted limit of 0.5 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
47% over limit
Discharged 22 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)