HARRIS COUNTY MUD 405 WWTP
NPDES ID: TX0125938
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
Nitrogen, ammonia total [as N]
93% over limit
Discharged 5.8 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
260% over limit
Discharged 3.26879997 kg/d against a permitted limit of 0.908 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
98% over limit
Discharged 5.95 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
164% over limit
Discharged 7.91 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
87% over limit
Discharged 1.69795999 kg/d against a permitted limit of 0.908 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
15% over limit
Discharged 17.2 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (2 hours ago)