COOPERSTOWN (V) WWTP
NPDES ID: NY0023591
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
April 30, 2026
Flow, in conduit or thru treatment plant
19% over limit
Discharged 0.62 MGD against a permitted limit of 0.52 MGD (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
23% over limit
Discharged 10.1 mg/L against a permitted limit of 8.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
40% over limit
Discharged 22.29139981 kg/d against a permitted limit of 15.88999987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
15% over limit
Discharged 0.6 MGD against a permitted limit of 0.52 MGD (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
24% over limit
Discharged 19.74899983 kg/d against a permitted limit of 15.88999987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
68% over limit
Discharged 13.8 mg/L against a permitted limit of 8.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
58% over limit
Discharged 25.06079979 kg/d against a permitted limit of 15.88999987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
76% over limit
Discharged 14.4 mg/L against a permitted limit of 8.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
102% over limit
Discharged 16.6 mg/L against a permitted limit of 8.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
31% over limit
Discharged 20.83859982 kg/d against a permitted limit of 15.88999987 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
August 31, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
July 31, 2025
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, carbonaceous [5 day, 20 C]
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
June 30, 2025
Flow, in conduit or thru treatment plant
19% over limit
Discharged 0.62 MGD against a permitted limit of 0.52 MGD (MO AVG)
DMR, Limited - Numeric Violation
Mercury, total [as Hg]
0% over limit
Discharged 0.0000019 mg/L against a permitted limit of 0.00005 mg/L (DAILY MX)
DMR, Limited - Overdue
May 31, 2025
Flow, in conduit or thru treatment plant
12% over limit
Discharged 0.58 MGD against a permitted limit of 0.52 MGD (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Phosphorus, total [as P]
8% over limit
Discharged 1.53016002 kg/d against a permitted limit of 1.41360001 kg/d (12MO TOT)
DMR, Limited - Numeric Violation
January 31, 2025
Phosphorus, total [as P]
15% over limit
Discharged 1.62192002 kg/d against a permitted limit of 1.41360001 kg/d (12MO TOT)
DMR, Limited - Numeric Violation
November 30, 2024
Stream flow, estimated
82% over limit
Discharged 1.29200006 MGD against a permitted limit of 7.1060003 MGD (DAILY MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)