TOWN OF MASONTOWN
NPDES ID: WV0105627
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: 4 effluent violations, 2 reporting violations.
Violations
April 30, 2026
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
March 31, 2026
Coliform, fecal general
6399% over limit
Discharged 12997 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Coliform, fecal general
3149% over limit
Discharged 12997 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, Kjeldahl, total [as N]
72% over limit
Discharged 5.5 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
81% over limit
Discharged 72.92 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, Kjeldahl, total [as N]
66% over limit
Discharged 5.3 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Coliform, fecal general
5949% over limit
Discharged 24196 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
11998% over limit
Discharged 24196 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
November 30, 2025
Coliform, fecal general
44% over limit
Discharged 288 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
422% over limit
Discharged 31.50759974 kg/d against a permitted limit of 6.03819995 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
528% over limit
Discharged 40.2 mg/L against a permitted limit of 6.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
160% over limit
Discharged 31.50759974 kg/d against a permitted limit of 12.1217999 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
1156% over limit
Discharged 40.2 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, Kjeldahl, total [as N]
50% over limit
Discharged 2.4 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
0% over limit
Discharged 2.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, suspended percent removal
0% over limit
Discharged 98.26 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.0136 mg/L against a permitted limit of 0.076 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.96 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.96 mg/L against a permitted limit of 3.2 mg/L (DAILY MX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 63 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 94.12 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1 mg/L against a permitted limit of 7.6 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1 mg/L against a permitted limit of 15.2 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 2.47883998 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.98397998 kg/d against a permitted limit of 28.60199976 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 2.5 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.98397998 kg/d against a permitted limit of 14.52799988 kg/d (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 63 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.95339999 kg/d against a permitted limit of 3.04179997 kg/d (MO AVG)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 8.9 mg/L against a permitted limit of 7.25 mg/L (INST MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 2.47883998 kg/d against a permitted limit of 113.49999905 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.95339999 kg/d against a permitted limit of 6.03819995 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.357 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.209 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.181 MGD against a permitted limit of 0 MGD (MINIMUM)
DMR, Monitor Only - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.0136 mg/L against a permitted limit of 0.135 mg/L (DAILY MX)
DMR, Limited - Overdue
June 30, 2025
Nitrogen, Kjeldahl, total [as N]
236% over limit
Discharged 10.21499991 kg/d against a permitted limit of 3.04179997 kg/d (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
236% over limit
Discharged 10.21499991 kg/d against a permitted limit of 3.04179997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
0% over limit
Discharged 94.57 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
69% over limit
Discharged 10.21499991 kg/d against a permitted limit of 6.03819995 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
69% over limit
Discharged 10.21499991 kg/d against a permitted limit of 6.03819995 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 2.5 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 8.9 mg/L against a permitted limit of 7.25 mg/L (INST MIN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 6.80999994 kg/d against a permitted limit of 113.49999905 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1 mg/L against a permitted limit of 15.2 mg/L (DAILY MX)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.021 mg/L against a permitted limit of 0.076 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.198 MGD against a permitted limit of 0 MGD (MINIMUM)
DMR, Monitor Only - Overdue
Coliform, fecal general
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.95 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
131% over limit
Discharged 3.7 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
131% over limit
Discharged 3.7 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 2.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.411 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
16% over limit
Discharged 3.7 mg/L against a permitted limit of 3.2 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
16% over limit
Discharged 3.7 mg/L against a permitted limit of 3.2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 6.80999994 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.021 mg/L against a permitted limit of 0.135 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.44799995 kg/d against a permitted limit of 14.52799988 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, suspended percent removal
0% over limit
Discharged 99.3 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.44799995 kg/d against a permitted limit of 28.60199976 kg/d (DAILY MX)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1 mg/L against a permitted limit of 7.6 mg/L (MO AVG)
DMR, Limited - Overdue
May 31, 2025
Solids, total suspended
0% over limit
Discharged 8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.86259999 kg/d against a permitted limit of 3.04179997 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 7.1 mg/L against a permitted limit of 15.2 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.81119995 kg/d against a permitted limit of 14.52799988 kg/d (MO AVG)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.167 MGD against a permitted limit of 0 MGD (MINIMUM)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.81119995 kg/d against a permitted limit of 28.60199976 kg/d (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 9 mg/L against a permitted limit of 7.25 mg/L (INST MIN)
DMR, Limited - Overdue
Solids, suspended percent removal
0% over limit
Discharged 98.68 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 1.1 mg/L against a permitted limit of 3.2 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 6.53759995 kg/d against a permitted limit of 113.49999905 kg/d (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 1.1 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 6.53759995 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.417 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.022 mg/L against a permitted limit of 0.135 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 95.42 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7.1 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.163 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0.86259999 kg/d against a permitted limit of 6.03819995 kg/d (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 7 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Overdue
Zinc, total recoverable
0% over limit
Discharged 0.022 mg/L against a permitted limit of 0.076 mg/L (MO AVG)
DMR, Limited - Overdue
Coliform, fecal general
0% over limit
Discharged 5 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 7.1 mg/L against a permitted limit of 7.6 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 8 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Overdue
April 30, 2025
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Lead, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
28% over limit
Discharged 4.1 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
20% over limit
Discharged 9.1 mg/L against a permitted limit of 7.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
78% over limit
Discharged 5.7 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, Kjeldahl, total [as N]
188% over limit
Discharged 9.2 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
15% over limit
Discharged 6.94619994 kg/d against a permitted limit of 6.03819995 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
44% over limit
Discharged 9.2 mg/L against a permitted limit of 6.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, Kjeldahl, total [as N]
21% over limit
Discharged 7.30939994 kg/d against a permitted limit of 6.03819995 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
194% over limit
Discharged 9.4 mg/L against a permitted limit of 3.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, Kjeldahl, total [as N]
47% over limit
Discharged 9.4 mg/L against a permitted limit of 6.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, Kjeldahl, total [as N]
13% over limit
Discharged 1.8 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, Kjeldahl, total [as N]
56% over limit
Discharged 2.5 mg/L against a permitted limit of 1.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (6 days ago)