MURCHISON WWTF
NPDES ID: TX0072087
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: 1 effluent violation.
Violations
April 30, 2026
Solids, total suspended
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
20% over limit
Discharged 24 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 6.3 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.111 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
21% over limit
Discharged 7.11649534 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
21% over limit
Discharged 7.11649534 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
0% over limit
Discharged 1.03 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 39 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 3.4 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
0% over limit
Discharged 2.53 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.068 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
6% over limit
Discharged 6.25884395 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
6% over limit
Discharged 6.25884395 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.4 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
January 31, 2026
Solids, total suspended
0% over limit
Discharged 2.24911598 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 21 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 7.9 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 1.07 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.96795378 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.06 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 15 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 19 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 16 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.073 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 2.39 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
December 31, 2025
Chlorine, total residual
0% over limit
Discharged 3 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 5 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 25 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 16 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.30629419 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 35 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0319 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
30% over limit
Discharged 26 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
30% over limit
Discharged 26 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 1.1 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.09 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 2.12340338 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
November 30, 2025
E. coli
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 16 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 22 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.42937359 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.061 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 24 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 2.2 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 1.4 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 5 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 1.56471099 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 16 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0303 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
October 31, 2025
Oxygen, dissolved [DO]
0% over limit
Discharged 6 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0328 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.074 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.6 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 35 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.08323057 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 33 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4.69358816 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 2.2 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 1.4 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2025
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0336 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.08323057 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 1.4 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 4.69358816 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 33 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 2.2 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.08 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 35 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.9 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.6 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
0% over limit
Discharged 6 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
15% over limit
Discharged 23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
55% over limit
Discharged 31 mg/L against a permitted limit of 20 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 (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
25% over limit
Discharged 25 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
1821% over limit
Discharged 2420 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 6.85785154 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
46% over limit
Discharged 8.61169893 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, 5-day, 20 deg. C
50% over limit
Discharged 30 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
105% over limit
Discharged 41 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
58% over limit
Discharged 9.33528412 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
30% over limit
Discharged 26 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
1821% over limit
Discharged 2420 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 (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
85% over limit
Discharged 37 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
203% over limit
Discharged 197 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
665% over limit
Discharged 153 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
255% over limit
Discharged 20.93194222 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
115% over limit
Discharged 43 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
February 28, 2025
Solids, total suspended
135% over limit
Discharged 47 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
82% over limit
Discharged 10.75979991 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
57% over limit
Discharged 102 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Overdue
January 31, 2025
Chlorine, total residual
0% over limit
Discharged 1.5 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.066 MGD against a permitted limit of 0.08 MGD (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 37 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 5.39805995 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
30% over limit
Discharged 26 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
30% over limit
Discharged 26 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.082 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 5.7 mg/L against a permitted limit of 2 mg/L (MO MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
25% over limit
Discharged 25 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
25% over limit
Discharged 25 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
0% over limit
Discharged 1.8 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.11777997 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 39 mg/L against a permitted limit of 65 mg/L (SINGGRAB)
DMR, Limited - Overdue
August 31, 2024
Solids, total suspended
146% over limit
Discharged 14.52799988 kg/d against a permitted limit of 5.902 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
6% over limit
Discharged 21.23 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)