MISSOURI VALLEY CITY OF WTP
NPDES ID: IA0080454
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: 2 effluent violations.
Violations
April 30, 2026
Iron, total [as Fe]
51% over limit
Discharged 0.54319647 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
51% over limit
Discharged 0.54319647 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Iron, total [as Fe]
74% over limit
Discharged 0.62407657 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
74% over limit
Discharged 0.62407657 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Iron, total [as Fe]
5% over limit
Discharged 0.37654442 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
5% over limit
Discharged 0.37654442 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Iron, total [as Fe]
32% over limit
Discharged 0.47367636 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
32% over limit
Discharged 0.47367636 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
17% over limit
Discharged 35 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
56% over limit
Discharged 70 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
38% over limit
Discharged 1.41 mg/L against a permitted limit of 1.02 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Iron, total [as Fe]
23% over limit
Discharged 0.44157265 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
157% over limit
Discharged 77 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
71% over limit
Discharged 77 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
174% over limit
Discharged 2.79 mg/L against a permitted limit of 1.02 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
174% over limit
Discharged 2.79 mg/L against a permitted limit of 1.02 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
23% over limit
Discharged 0.44157265 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Iron, total [as Fe]
116% over limit
Discharged 0.77402278 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
149% over limit
Discharged 112 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
396% over limit
Discharged 5.06 mg/L against a permitted limit of 1.02 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
273% over limit
Discharged 112 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
396% over limit
Discharged 5.06 mg/L against a permitted limit of 1.02 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
116% over limit
Discharged 0.77402278 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
57% over limit
Discharged 47 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 47 mg/L against a permitted limit of 45 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
74% over limit
Discharged 1.77 mg/L against a permitted limit of 1.02 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
8% over limit
Discharged 0.38870753 kg/d against a permitted limit of 0.359114 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
74% over limit
Discharged 1.77 mg/L against a permitted limit of 1.02 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Iron, total [as Fe]
8% over limit
Discharged 0.38870753 kg/d against a permitted limit of 0.359114 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)