MABANK WWTP
NPDES ID: TX0052949
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: 5 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
505% over limit
Discharged 12.096 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
607% over limit
Discharged 24.0846998 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
63% over limit
Discharged 24.5 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
159% over limit
Discharged 8.80759993 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
166% over limit
Discharged 5.3144 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
76% over limit
Discharged 14.08 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
27% over limit
Discharged 159.445 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
162% over limit
Discharged 1046.2 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
48% over limit
Discharged 22.2 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
70% over limit
Discharged 23.12221981 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
70% over limit
Discharged 25.5 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
148% over limit
Discharged 19.82 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
226% over limit
Discharged 410.47 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
16% over limit
Discharged 461.1 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
150% over limit
Discharged 34.11355971 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2026
Flow, in conduit or thru treatment plant
4% over limit
Discharged 0.469 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
144% over limit
Discharged 307.522 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
254% over limit
Discharged 1413.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
81% over limit
Discharged 27.2 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
152% over limit
Discharged 34.26337971 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
132% over limit
Discharged 18.58 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2025
E. coli
146% over limit
Discharged 980.4 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
434% over limit
Discharged 672.356 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
402% over limit
Discharged 10.0426 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
356% over limit
Discharged 15.52679987 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
37% over limit
Discharged 20.5 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
September 30, 2025
E. coli
87% over limit
Discharged 236.209 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
65% over limit
Discharged 5.62505995 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
115% over limit
Discharged 4.3 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
7% over limit
Discharged 16.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
312% over limit
Discharged 14.01951988 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
265% over limit
Discharged 7.292 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
11% over limit
Discharged 3.77273997 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 3.1994 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
415% over limit
Discharged 10.302 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1018% over limit
Discharged 38.05427968 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
10% over limit
Discharged 0.493 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
506% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
67% over limit
Discharged 25.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
604% over limit
Discharged 887.457 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2025
E. coli
9% over limit
Discharged 435.2 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
122% over limit
Discharged 4.44 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
19% over limit
Discharged 0.534 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
206% over limit
Discharged 10.41475991 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
506% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
23% over limit
Discharged 18.5 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
668% over limit
Discharged 968.045 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
6% over limit
Discharged 0.479 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
464% over limit
Discharged 11.274 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
475% over limit
Discharged 19.59463984 kg/d against a permitted limit of 3.40499997 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
E. coli
1820% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
506% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
February 28, 2025
Flow, in conduit or thru treatment plant
24% over limit
Discharged 0.56 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
190% over limit
Discharged 365 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
506% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
1% over limit
Discharged 30.4 mg/L against a permitted limit of 30 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
47% over limit
Discharged 75.27773937 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
7% over limit
Discharged 14.63695988 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
E. coli
506% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
63% over limit
Discharged 24.4 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
146% over limit
Discharged 19.64 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
1122% over limit
Discharged 1540 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
227% over limit
Discharged 44.56917963 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
3% over limit
Discharged 52.72755956 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
6% over limit
Discharged 0.476 MGD against a permitted limit of 0.45 MGD (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
E. coli
9% over limit
Discharged 435.2 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
62% over limit
Discharged 24.3 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
179% over limit
Discharged 37.95893968 kg/d against a permitted limit of 13.61999989 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
156% over limit
Discharged 323.184 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
112% over limit
Discharged 16.92 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
31% over limit
Discharged 19.6 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
72% over limit
Discharged 21.12461982 kg/d against a permitted limit of 12.258 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
75% over limit
Discharged 14.02 mg/L against a permitted limit of 8 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
185% over limit
Discharged 5.692 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
123% over limit
Discharged 6.76913994 kg/d against a permitted limit of 3.0418 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
360% over limit
Discharged 14.00135988 kg/d against a permitted limit of 3.0418 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
193% over limit
Discharged 5.852 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
167% over limit
Discharged 8.13567993 kg/d against a permitted limit of 3.0418 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
96% over limit
Discharged 3.9106 mg/L against a permitted limit of 2 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)