SOUTHWEST SHIPYARD
NPDES ID: TX0092282
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 3 effluent violations, 1 permit schedule violation.
Violations
June 30, 2026
Enterococci
93% over limit
Discharged 201 MPN/100mL against a permitted limit of 104 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Enterococci
187% over limit
Discharged 100.5 MPN/100mL against a permitted limit of 35 MPN/100mL (DAILY AV)
DMR, Limited - Numeric Violation
April 30, 2026
Cyanide, free available
10% over limit
Discharged 0.0203 mg/L against a permitted limit of 0.0185 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, carbonaceous [5 day, 20 C]
34% over limit
Discharged 26.7 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Acetophenone
79% over limit
Discharged 0.204 mg/L against a permitted limit of 0.114 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Acetophenone
8% over limit
Discharged 0.03632454 kg/d against a permitted limit of 0.0336414 kg/d (DAILY AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)