COLONIAL PIPELINE COMPANY - WO
NPDES ID: MD0057886
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.
Violations
March 31, 2026
Benzene
40% over limit
Discharged 0.007 mg/L against a permitted limit of 0.005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Benzene
240% over limit
Discharged 0.017 mg/L against a permitted limit of 0.005 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (AN AV MX)
DMR, Limited - Numeric Violation
Benzene, ethylbenzene, toluene, xylene combination
80% over limit
Discharged 0.18000001 mg/L against a permitted limit of 0.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Hydrocarbons, total petroleum
33233% over limit
Discharged 5 mg/L against a permitted limit of 0.015 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)