MENDHAM BORO
NPDES ID: NJ0021334
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: 3 effluent violations, 4 permit schedule violations.
Violations
June 30, 2026
Solids, total dissolved
4% over limit
Discharged 530 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Solids, total dissolved
1% over limit
Discharged 515 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total dissolved
7% over limit
Discharged 546 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total dissolved
42% over limit
Discharged 723 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total dissolved
38% over limit
Discharged 703 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total dissolved
33% over limit
Discharged 678 mg/L against a permitted limit of 509 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)