U.S. COAST GUARD - BALTIMORE Y
NPDES ID: MD0067300
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: 3 effluent violations.
Violations
June 30, 2026
Copper, total [as Cu]
218% over limit
Discharged 0.0413 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Copper, total [as Cu]
20% over limit
Discharged 0.0156 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
3% over limit
Discharged 0.123 mg/L against a permitted limit of 0.12 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total [as Cu]
58% over limit
Discharged 0.0205 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total [as Zn]
94% over limit
Discharged 0.233 mg/L against a permitted limit of 0.12 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total [as Cu]
109% over limit
Discharged 0.0272 mg/L against a permitted limit of 0.013 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (6 days ago)