WESTCHESTER COUNTY AIRPORT
NPDES ID: NY0075132
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: 4 effluent violations.
Violations
June 30, 2026
BOD, carbonaceous [5 day, 20 C]
32% over limit
Discharged 6.6 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
986% over limit
Discharged 54.3 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
BOD, carbonaceous [5 day, 20 C]
33% over limit
Discharged 45.3 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, carbonaceous [5 day, 20 C]
30% over limit
Discharged 44.2 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, carbonaceous [5 day, 20 C]
64% over limit
Discharged 55.9 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
29% over limit
Discharged 43.7 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Oil & Grease
1493% over limit
Discharged 239 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oil & Grease
345% over limit
Discharged 66.7 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, carbonaceous [5 day, 20 C]
1234% over limit
Discharged 66.7 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, carbonaceous [5 day, 20 C]
274% over limit
Discharged 18.7 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
10% over limit
Discharged 5.5 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Alkyl bensene sulfonates, linear [LAS]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, carbonaceous [5 day, 20 C]
30% over limit
Discharged 44.3 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Alkyl bensene sulfonates, linear [LAS]
0% over limit
Discharged 0 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Overdue
March 31, 2025
Oil & Grease
91% over limit
Discharged 28.6 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, carbonaceous [5 day, 20 C]
48% over limit
Discharged 50.2 mg/L against a permitted limit of 34 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (22 minutes ago)