LONG ISLAND MACARTHUR AIRPORT
NPDES ID: NY0173703
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: 1 effluent violation.
Violations
April 30, 2026
Propylene glycol, total
140% over limit
Discharged 2.4 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Propylene glycol, total
13800% over limit
Discharged 139 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Propylene glycol, total
11800% over limit
Discharged 119 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Propylene glycol, total
12300% over limit
Discharged 124 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Propylene glycol, total
17200% over limit
Discharged 173 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Propylene glycol, total
7310% over limit
Discharged 74.1 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Propylene glycol, total
70100% over limit
Discharged 702 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Propylene glycol, total
226900% over limit
Discharged 2270 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
Propylene glycol, total
88800% over limit
Discharged 889 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
90% over limit
Discharged 19 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Propylene glycol, total
24800% over limit
Discharged 249 mg/L against a permitted limit of 1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)