TENARIS AMBRIDGE
NPDES ID: PA0006335
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
Oil & Grease
71% over limit
Discharged 17.1 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Oil & Grease
32% over limit
Discharged 13.2 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Oil & Grease
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Oil & Grease
73% over limit
Discharged 17.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Oil & Grease
23% over limit
Discharged 12.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Oil & Grease
8% over limit
Discharged 10.8 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)