WESLACO NORTH WWTP
NPDES ID: TX0052787
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 11.2 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
17% over limit
Discharged 3.5 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
405% over limit
Discharged 202 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
507% over limit
Discharged 2420 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
190% over limit
Discharged 29 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
87% over limit
Discharged 104.28379912 kg/d against a permitted limit of 55.84199953 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
128% over limit
Discharged 423.80899644 kg/d against a permitted limit of 185.68599844 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
442% over limit
Discharged 81.3 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
422% over limit
Discharged 52.2 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
327% over limit
Discharged 12.8 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
134% over limit
Discharged 652.53419452 kg/d against a permitted limit of 278.30199766 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
420% over limit
Discharged 130 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
227% over limit
Discharged 32.7 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
890% over limit
Discharged 148.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
369% over limit
Discharged 1304.61438904 kg/d against a permitted limit of 278.30199766 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
452% over limit
Discharged 138 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
823% over limit
Discharged 27.7 mg/L against a permitted limit of 3 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 (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
873% over limit
Discharged 1226 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
460% over limit
Discharged 224 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
379% over limit
Discharged 889.02279253 kg/d against a permitted limit of 185.68599844 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
335% over limit
Discharged 242.84459796 kg/d against a permitted limit of 55.84199953 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
913% over limit
Discharged 101.3 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, carbonaceous [5 day, 20 C]
409% over limit
Discharged 50.9 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
322% over limit
Discharged 42.2 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
440% over limit
Discharged 301.41059747 kg/d against a permitted limit of 55.84199953 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
43% over limit
Discharged 57 mg/L against a permitted limit of 40 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1007% over limit
Discharged 33.2 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
90% over limit
Discharged 0.1 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 304.13459744 kg/d against a permitted limit of 278.30199766 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
127% over limit
Discharged 34.1 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
647% over limit
Discharged 941 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 (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
188% over limit
Discharged 72 mg/L against a permitted limit of 25 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
18% over limit
Discharged 3.3 mg/L against a permitted limit of 4 mg/L (MO MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
136% over limit
Discharged 438.70019631 kg/d against a permitted limit of 185.68599844 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2024
E. coli
334% over limit
Discharged 1733 MPN/100mL against a permitted limit of 399 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
143% over limit
Discharged 24.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
107% over limit
Discharged 6.2 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)