A90/100
MARION CO. RURAL WATER DISTRICT — Water Quality Report 2026
Serving 5,687 people · Iowa
Water Source
Purchased Groundwater
County
—
System ID
IA6342711
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: January 21, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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: October 1, 2023 – September 30, 2024Enforcement: 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 MARION CO. RURAL WATER DISTRICT
Is MARION CO. RURAL WATER DISTRICT water safe to drink?
MARION CO. RURAL WATER DISTRICT water receives a grade of A (90/100), 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 MARION CO. RURAL WATER DISTRICT detected?
31 contaminants were tested in MARION CO. RURAL WATER DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MARION CO. RURAL WATER DISTRICT have any EPA violations?
Yes, MARION CO. RURAL WATER DISTRICT has 3 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does MARION CO. RURAL WATER DISTRICT serve?
MARION CO. RURAL WATER DISTRICT serves approximately 5,687 people, Iowa. The system provides water to 1 community: Knoxville.
What type of water does MARION CO. RURAL WATER DISTRICT provide?
MARION CO. RURAL WATER DISTRICT sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA6342711.
How does MARION CO. RURAL WATER DISTRICT compare to other utilities in Iowa?
MARION CO. RURAL WATER DISTRICT scores 90/100 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.