HAMLET OF LISBON SD STP
NPDES ID: NY0257559
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 6 effluent violations.
Violations
May 31, 2026
Oxygen demand, ultimate
411% over limit
Discharged 99.6 mg/L against a permitted limit of 19.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
1110% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 200 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
Coliform, fecal general
505% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Oxygen demand, ultimate
239% over limit
Discharged 12.52131989 kg/d against a permitted limit of 3.69101997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Oxygen demand, ultimate
812% over limit
Discharged 177.83 mg/L against a permitted limit of 19.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Carbonaceous oxygen demand, % removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 10.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen demand, ultimate
232% over limit
Discharged 12.2534599 kg/d against a permitted limit of 3.69101997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Oxygen demand, ultimate
123% over limit
Discharged 8.23555993 kg/d against a permitted limit of 3.69101997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen demand, ultimate
96% over limit
Discharged 38.25 mg/L against a permitted limit of 19.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Oxygen demand, ultimate
26% over limit
Discharged 4.64895996 kg/d against a permitted limit of 3.69101997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen demand, ultimate
305% over limit
Discharged 78.9 mg/L against a permitted limit of 19.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Oxygen demand, ultimate
53% over limit
Discharged 5.65683995 kg/d against a permitted limit of 3.69101997 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
73% over limit
Discharged 691.1 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
Oxygen demand, ultimate
350% over limit
Discharged 87.75 mg/L against a permitted limit of 19.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)