SOUTH FORK COEUR D'ALENE RIVER SEWER DISTRICT - MULLAN WWTP
NPDES ID: ID0021296
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 20 effluent violations, 1 single-event violation.
Violations
May 31, 2026
Lead, total recoverable
73% over limit
Discharged 0.052 mg/L against a permitted limit of 0.03 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
23% over limit
Discharged 81.5 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Lead, total recoverable
6% over limit
Discharged 0.052 mg/L against a permitted limit of 0.049 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
38% over limit
Discharged 62.3 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
13% over limit
Discharged 51 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
58% over limit
Discharged 2.55 mg/L against a permitted limit of 1.61 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
242% over limit
Discharged 0.0188 mg/L against a permitted limit of 0.0055 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
74% over limit
Discharged 0.0188 mg/L against a permitted limit of 0.0108 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Cadmium, total recoverable
1372% over limit
Discharged 0.167072 kg/d against a permitted limit of 0.01135 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Zinc, total recoverable
22% over limit
Discharged 4.51 mg/L against a permitted limit of 3.682 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
22% over limit
Discharged 4.09961997 kg/d against a permitted limit of 3.35959997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
70% over limit
Discharged 0.0184 mg/L against a permitted limit of 0.0108 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
46% over limit
Discharged 65.6 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
12% over limit
Discharged 33.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
235% over limit
Discharged 0.0184 mg/L against a permitted limit of 0.0055 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
157% over limit
Discharged 61.4 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Lead, total recoverable
50% over limit
Discharged 0.09534 kg/d against a permitted limit of 0.06356 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
180% over limit
Discharged 4.51 mg/L against a permitted limit of 1.61 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
651% over limit
Discharged 0.167072 kg/d against a permitted limit of 0.022246 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, suspended percent removal
6% over limit
Discharged 84.1 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
27% over limit
Discharged 0.0137 mg/L against a permitted limit of 0.0108 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cadmium, total recoverable
149% over limit
Discharged 0.0137 mg/L against a permitted limit of 0.0055 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
102% over limit
Discharged 3.25 mg/L against a permitted limit of 1.61 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Zinc, total recoverable
14% over limit
Discharged 1.84 mg/L against a permitted limit of 1.61 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)