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.
Violations
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
Chlorine, total residual
325% over limit
Discharged 5.1 mg/L against a permitted limit of 1.2 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
December 31, 2025
Copper, total recoverable
314% over limit
Discharged 0.0786 mg/L against a permitted limit of 0.019 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
33% over limit
Discharged 1.6 mg/L against a permitted limit of 1.2 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
December 31, 2024
Chlorine, total residual
313% over limit
Discharged 0.33 mg/L against a permitted limit of 0.08 mg/L (MAXIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)