NORTHFIELD
NPDES ID: VT0100242
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: 4 effluent violations, 8 permit schedule violations.
Violations
June 30, 2026
Copper, total [as Cu]
7% over limit
Discharged 0.029 mg/L against a permitted limit of 0.027 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Copper, total [as Cu]
6% over limit
Discharged 0.0285 mg/L against a permitted limit of 0.027 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
E. coli, thermotol, MF, MTEC
160% over limit
Discharged 200 MPN/100mL against a permitted limit of 77 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
28% over limit
Discharged 0.0345 mg/L against a permitted limit of 0.027 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Copper, total [as Cu]
24% over limit
Discharged 0.03355 mg/L against a permitted limit of 0.027 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
9% over limit
Discharged 0.87 mg/L against a permitted limit of 0.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)