HUNTINGTON INGALLS INCORPORATED - NN SHIPBLDG DIV
NPDES ID: VA0004804
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
Zinc, total recoverable
113% over limit
Discharged 0.55600003 mg/L against a permitted limit of 0.26100001 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Copper, total recoverable
404% over limit
Discharged 0.13600001 mg/L against a permitted limit of 0.027 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
Copper, total recoverable
25% over limit
Discharged 0.0338 mg/L against a permitted limit of 0.027 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
68% over limit
Discharged 2.02 mg/L against a permitted limit of 1.2 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
783% over limit
Discharged 10.6 mg/L against a permitted limit of 1.2 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)