POTLATCH, CITY OF - POTLATCH WWTP
NPDES ID: ID0022501
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 7 effluent violations.
Violations
May 31, 2026
Solids, suspended percent removal
127% over limit
Discharged 66 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
71% over limit
Discharged 74.3 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
25% over limit
Discharged 37.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 32.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
65% over limit
Discharged 74.68299937 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
15% over limit
Discharged 82.7 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 53.57199955 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, percent removal
46% over limit
Discharged 78.1 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
45% over limit
Discharged 43.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
78% over limit
Discharged 80.63039932 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
191% over limit
Discharged 56.3 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
4% over limit
Discharged 47.2159996 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
17% over limit
Discharged 35 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
60% over limit
Discharged 76 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
33% over limit
Discharged 80.1 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
24% over limit
Discharged 56.15979953 kg/d against a permitted limit of 45.39999962 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
32% over limit
Discharged 80.2 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, suspended percent removal
49% over limit
Discharged 77.59 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)