OHIOVILLE WWTP
NPDES ID: NY0109886
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: 2 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
60% over limit
Discharged 3.2 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
135% over limit
Discharged 4.7 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
35% over limit
Discharged 2.7 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
265% over limit
Discharged 7.3 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
35% over limit
Discharged 2.7 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
550% over limit
Discharged 13 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
765% over limit
Discharged 17.3 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
750% over limit
Discharged 17 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
675% over limit
Discharged 15.5 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
425% over limit
Discharged 10.5 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Mercury, total [as Hg]
52% over limit
Discharged 0.0000761 mg/L against a permitted limit of 0.00005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
30% over limit
Discharged 2.6 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0071 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, suspended percent removal
0% over limit
Discharged 99 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 11.1 mg/L against a permitted limit of 7 mg/L (MINIMUM)
DMR, Limited - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 76 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
Temperature, water deg. fahrenheit
0% over limit
Discharged 76 deg F against a permitted limit of 0 deg F (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.8 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Carbonaceous oxygen demand, % removal
0% over limit
Discharged 99 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.87 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 1890 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.3 SU against a permitted limit of 0 SU (MAXIMUM)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 13900 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0071 MGD against a permitted limit of 0.015 MGD (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 6.2 SU against a permitted limit of 0 SU (MINIMUM)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.1 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Solids, settleable
0% over limit
Discharged 0.22500001 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Mercury, total [as Hg]
0% over limit
Discharged 0.0000076 mg/L against a permitted limit of 0.00005 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, settleable
0% over limit
Discharged 0.0001 mg/L against a permitted limit of 0.0001 mg/L (DAILY MX)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)