LAKE OF THE WOODS REG SEW DIST
NPDES ID: IN0057002
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Solids, total suspended
194% over limit
Discharged 205.8 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10.8 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
163% over limit
Discharged 276 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
109% over limit
Discharged 38.1 mg/L against a permitted limit of 18.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
27% over limit
Discharged 15.4 mg/L against a permitted limit of 12.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
43% over limit
Discharged 150 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
62% over limit
Discharged 19.6 mg/L against a permitted limit of 12.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 75.3 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
54% over limit
Discharged 28.1 mg/L against a permitted limit of 18.2 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
25% over limit
Discharged 87.8 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
26% over limit
Discharged 132 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 9.1 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 76.5 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1% over limit
Discharged 106 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
March 31, 2025
pH
0% over limit
Discharged 10.9 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
151% over limit
Discharged 264 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
145% over limit
Discharged 171.5 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Streamflow
0% over limit
Discharged 6.8 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 9.6 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
pH
0% over limit
Discharged 9.4 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
Streamflow
0% over limit
Discharged 13.1 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
5% over limit
Discharged 73.2 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
21% over limit
Discharged 84.5 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Solids, total suspended
67% over limit
Discharged 117 mg/L against a permitted limit of 70 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 142 mg/L against a permitted limit of 105 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Streamflow
0% over limit
Discharged 5.4 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)