A94/100
SIOUX CENTER MUNICIPAL WATER DEPARTMENT — Water Quality Report 2026
Serving 8,231 people · Iowa
Water Source
Groundwater
County
—
System ID
IA8486053
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2023 – May 31, 2023Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About SIOUX CENTER MUNICIPAL WATER DEPARTMENT
Is SIOUX CENTER MUNICIPAL WATER DEPARTMENT water safe to drink?
SIOUX CENTER MUNICIPAL WATER DEPARTMENT water receives a grade of A (94/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has SIOUX CENTER MUNICIPAL WATER DEPARTMENT detected?
31 contaminants were tested in SIOUX CENTER MUNICIPAL WATER DEPARTMENT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SIOUX CENTER MUNICIPAL WATER DEPARTMENT have any EPA violations?
Yes, SIOUX CENTER MUNICIPAL WATER DEPARTMENT has 3 EPA violation(s) on record, with the most recent in 2023. Violation types include MR.
How many people does SIOUX CENTER MUNICIPAL WATER DEPARTMENT serve?
SIOUX CENTER MUNICIPAL WATER DEPARTMENT serves approximately 8,231 people, Iowa. The system provides water to 1 community: Sioux Center.
What type of water does SIOUX CENTER MUNICIPAL WATER DEPARTMENT provide?
SIOUX CENTER MUNICIPAL WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA8486053.
How does SIOUX CENTER MUNICIPAL WATER DEPARTMENT compare to other utilities in Iowa?
SIOUX CENTER MUNICIPAL WATER DEPARTMENT scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Iowa state page for a full comparison of water systems.