BELT WATER TREATMENT PLANT
NPDES ID: MT0032247
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: 6 effluent violations.
Violations
May 31, 2026
Aluminum, dissolved [as Al]
168% over limit
Discharged 0.19000001 mg/L against a permitted limit of 0.071 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
210% over limit
Discharged 21.7 mg/L against a permitted limit of 7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Aluminum, dissolved [as Al]
410% over limit
Discharged 0.73000003 mg/L against a permitted limit of 0.14300001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
358% over limit
Discharged 16.015 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Aluminum, dissolved [as Al]
187% over limit
Discharged 0.41000002 mg/L against a permitted limit of 0.14300001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Aluminum, dissolved [as Al]
224% over limit
Discharged 0.23000001 mg/L against a permitted limit of 0.071 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Iron, total [as Fe]
129% over limit
Discharged 8.02 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
61% over limit
Discharged 11.3 mg/L against a permitted limit of 7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Iron, total [as Fe]
146% over limit
Discharged 8.615 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
40% over limit
Discharged 9.81 mg/L against a permitted limit of 7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
82% over limit
Discharged 0.53000003 mg/L against a permitted limit of 0.29200001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
97% over limit
Discharged 0.28700001 mg/L against a permitted limit of 0.14600001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Aluminum, dissolved [as Al]
306% over limit
Discharged 0.58000003 mg/L against a permitted limit of 0.14300001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Aluminum, dissolved [as Al]
323% over limit
Discharged 0.30000001 mg/L against a permitted limit of 0.071 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Conductivity
0% over limit
Discharged 0 umho/cm against a permitted limit of 0 umho/cm (DAILY MX)
DMR, Monitor Only - Overdue
Iron, total [as Fe]
946% over limit
Discharged 36.6 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
484% over limit
Discharged 40.9 mg/L against a permitted limit of 7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Conductivity
0% over limit
Discharged 0 umho/cm against a permitted limit of 0 umho/cm (MO AVG)
DMR, Monitor Only - Overdue
Zinc, total recoverable
41% over limit
Discharged 0.20650001 mg/L against a permitted limit of 0.14600001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
24% over limit
Discharged 43.5 mg/L against a permitted limit of 35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Iron, total [as Fe]
383% over limit
Discharged 16.9 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Zinc, total recoverable
7% over limit
Discharged 0.31300001 mg/L against a permitted limit of 0.29200001 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Zinc, total recoverable
114% over limit
Discharged 0.31300001 mg/L against a permitted limit of 0.14600001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 53 mg/L against a permitted limit of 35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
141% over limit
Discharged 16.9 mg/L against a permitted limit of 7 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)