CITY OF CHINA WWTF
NPDES ID: TX0071650
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: 9 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
97% over limit
Discharged 5.92 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
47% over limit
Discharged 22.1 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
50% over limit
Discharged 0.5 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
2% over limit
Discharged 61.2 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
153% over limit
Discharged 37.9 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
76% over limit
Discharged 17.6 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
156% over limit
Discharged 7.68 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 15.3 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Chlorine, total residual
20% over limit
Discharged 4.8 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
37% over limit
Discharged 13.7 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
21% over limit
Discharged 18.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
98% over limit
Discharged 5.94 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
120% over limit
Discharged 33 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
73% over limit
Discharged 4.46735996 kg/d against a permitted limit of 2.58779998 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
293% over limit
Discharged 11.8 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
88% over limit
Discharged 18.8 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
8% over limit
Discharged 4.6 mg/L against a permitted limit of 5 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 14.57339988 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
5% over limit
Discharged 63 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
74% over limit
Discharged 26.1 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
144% over limit
Discharged 36.6 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
65% over limit
Discharged 6.6 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
13% over limit
Discharged 68 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
493% over limit
Discharged 17.8 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
3% over limit
Discharged 4.1 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
108% over limit
Discharged 17.93299985 kg/d against a permitted limit of 8.626 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
192% over limit
Discharged 43.8 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
86% over limit
Discharged 18.6 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
80% over limit
Discharged 27 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Solids, total suspended
196% over limit
Discharged 38.95319967 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
542% over limit
Discharged 16.61639986 kg/d against a permitted limit of 2.58779998 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
5% over limit
Discharged 3.14 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
57% over limit
Discharged 23.6 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
247% over limit
Discharged 10.4 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
56% over limit
Discharged 2.2 mg/L against a permitted limit of 5 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Chlorine, total residual
3% over limit
Discharged 4.1 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
5965% over limit
Discharged 24200 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
81% over limit
Discharged 4.67619996 kg/d against a permitted limit of 2.58779998 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
86% over limit
Discharged 27.9 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 17.9 mg/L against a permitted limit of 15 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
104% over limit
Discharged 30.6 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.8 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
45% over limit
Discharged 5.8 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
5% over limit
Discharged 63 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
56% over limit
Discharged 23.4 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
90% over limit
Discharged 25.01539979 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
97% over limit
Discharged 29.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
133% over limit
Discharged 35 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
69% over limit
Discharged 5.08 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
45% over limit
Discharged 14.5 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
79% over limit
Discharged 4.63079996 kg/d against a permitted limit of 2.58779998 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
19% over limit
Discharged 10.30579991 kg/d against a permitted limit of 8.626 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
85% over limit
Discharged 24.3797998 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
70% over limit
Discharged 22.38219981 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 10.3 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
19% over limit
Discharged 3.07357997 kg/d against a permitted limit of 2.58779998 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
35% over limit
Discharged 4.05 mg/L against a permitted limit of 3 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
121% over limit
Discharged 33.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
40% over limit
Discharged 0.6 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
211% over limit
Discharged 46.7 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Chlorine, total residual
30% over limit
Discharged 0.7 mg/L against a permitted limit of 1 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 70 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
Chlorine, total residual
8% over limit
Discharged 4.3 mg/L against a permitted limit of 4 mg/L (MO MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 19.88519983 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
337% over limit
Discharged 65.5 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
55% over limit
Discharged 93 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
66% over limit
Discharged 16.6 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
69% over limit
Discharged 22.29139981 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
1% over limit
Discharged 10.1 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
60% over limit
Discharged 21.11099982 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
173% over limit
Discharged 40.9 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
83% over limit
Discharged 24.1073998 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
109% over limit
Discharged 31.4 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
33% over limit
Discharged 20 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
26% over limit
Discharged 16.61639986 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
35% over limit
Discharged 20.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, total suspended
99% over limit
Discharged 29.8 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total suspended
40% over limit
Discharged 18.38699985 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
73% over limit
Discharged 104 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.8 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
195% over limit
Discharged 44.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total suspended
73% over limit
Discharged 25.9 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
74% over limit
Discharged 26.1 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 14.11939988 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
July 31, 2024
E. coli, colony forming units [CFU]
0% over limit
Discharged 10 MPN/100mL against a permitted limit of 399 MPN/100mL (SINGGRAB)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 5.6 mg/L against a permitted limit of 5 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
Solids, total suspended
195% over limit
Discharged 44.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
195% over limit
Discharged 44.2 mg/L against a permitted limit of 15 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.85659995 kg/d against a permitted limit of 8.626 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
73% over limit
Discharged 104 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Overdue
Solids, total suspended
73% over limit
Discharged 104 mg/L against a permitted limit of 60 mg/L (SINGGRAB)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
0% over limit
Discharged 10 MPN/100mL against a permitted limit of 126 MPN/100mL (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.8 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
8% over limit
Discharged 10.8 mg/L against a permitted limit of 10 mg/L (DAILY AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 14.4 mg/L against a permitted limit of 35 mg/L (SINGGRAB)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.8 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, total suspended
40% over limit
Discharged 18.38699985 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Overdue
Solids, total suspended
40% over limit
Discharged 18.38699985 kg/d against a permitted limit of 13.166 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)