ARCATA WWTF
NPDES ID: CA0022713
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 2 effluent violations, 1 compliance schedule violation.
Violations
June 30, 2026
Cyanide, total [as CN]
50% over limit
Discharged 0.0015 mg/L against a permitted limit of 0.001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
6% over limit
Discharged 34 mg/L against a permitted limit of 32 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
22% over limit
Discharged 39 mg/L against a permitted limit of 32 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
27% over limit
Discharged 61 mg/L against a permitted limit of 48 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, settleable
900% over limit
Discharged 0.002 mg/L against a permitted limit of 0.0002 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Cyanide, total [as CN]
202% over limit
Discharged 0.0013 mg/L against a permitted limit of 0.00043 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (6 days ago)