POWDER MILL FISH HATCHERY
NPDES ID: NH0000710
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 effluent violations, 1 compliance schedule violation.
Violations
June 30, 2026
Phosphorus, total [as P]
29% over limit
Discharged 0.0155 mg/L against a permitted limit of 0.012 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
pH
0% over limit
Discharged 6.34 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
April 30, 2026
Phosphorus, total [as P]
12% over limit
Discharged 0.0134 mg/L against a permitted limit of 0.012 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.24 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
pH
0% over limit
Discharged 5.98 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
February 28, 2026
pH
0% over limit
Discharged 5.92 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (4 days ago)