MAPLE LEAF GARDENS WWTP
NPDES ID: TX0085821
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: 4 effluent violations.
Violations
May 31, 2026
Oxygen, dissolved [DO]
20% over limit
Discharged 3.2 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
9% over limit
Discharged 65.3 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
88% over limit
Discharged 28.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
311% over limit
Discharged 10.44199991 kg/d against a permitted limit of 2.5424 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
37% over limit
Discharged 20.6 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
103% over limit
Discharged 6.1 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
78% over limit
Discharged 4.51729996 kg/d against a permitted limit of 2.5424 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
209% over limit
Discharged 1.54359999 kg/d against a permitted limit of 0.4994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
175% over limit
Discharged 1.37561999 kg/d against a permitted limit of 0.4994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
86% over limit
Discharged 27.9 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
473% over limit
Discharged 17.2 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
165% over limit
Discharged 1.32567999 kg/d against a permitted limit of 0.4994 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
680% over limit
Discharged 23.4 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
130% over limit
Discharged 34.5 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
8% over limit
Discharged 16.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 3.34 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2025
Chlorine, total residual
7% over limit
Discharged 4.26 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
110% over limit
Discharged 6.3 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 20 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)