TOWN OF CULBERTSON DOMESTIC WWTF
NPDES ID: MT0031798
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: 12 effluent violations.
Violations
June 30, 2026
Solids, suspended percent removal
89% over limit
Discharged 71.58 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 52 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
73% over limit
Discharged 52 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Solids, suspended percent removal
208% over limit
Discharged 53.8 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 79 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
163% over limit
Discharged 79 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, suspended percent removal
103% over limit
Discharged 69.6 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
83% over limit
Discharged 55 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
22% over limit
Discharged 55 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
23% over limit
Discharged 37 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.9 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2026
pH
0% over limit
Discharged 9.4 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
February 28, 2026
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2026
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2025
pH
0% over limit
Discharged 9.1 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
30% over limit
Discharged 39 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, suspended percent removal
4% over limit
Discharged 84.44 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
27% over limit
Discharged 80.95 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, suspended percent removal
45% over limit
Discharged 78.2 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.4 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
47% over limit
Discharged 33.36899972 kg/d against a permitted limit of 22.69999981 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
pH
0% over limit
Discharged 9.5 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total suspended
47% over limit
Discharged 66 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.1 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
55% over limit
Discharged 76.7 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
120% over limit
Discharged 66 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, suspended percent removal
17% over limit
Discharged 82.47 % against a permitted limit of 85 % (MINIMUM)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 34 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (8 hours ago)