F0/100
CORYDON WATER SUPPLY — Water Quality Report 2026
Serving 1,610 people · Iowa
Water Source
Purchased Surface Water
County
—
System ID
IA9334078
Violations
148
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 1, 2021 – November 30, 2021Rule: Total Coliform RuleEnforcement: 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 CORYDON WATER SUPPLY
Is CORYDON WATER SUPPLY water safe to drink?
CORYDON WATER SUPPLY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 148 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CORYDON WATER SUPPLY detected?
1 contaminants were tested in CORYDON WATER SUPPLY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CORYDON WATER SUPPLY have any EPA violations?
Yes, CORYDON WATER SUPPLY has 148 EPA violation(s) on record, with the most recent in 2021. Violation types include MON, MR.
How many people does CORYDON WATER SUPPLY serve?
CORYDON WATER SUPPLY serves approximately 1,610 people, Iowa. The system provides water to 1 community: Corydon.
What type of water does CORYDON WATER SUPPLY provide?
CORYDON WATER SUPPLY sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IA9334078.
How does CORYDON WATER SUPPLY compare to other utilities in Iowa?
CORYDON WATER SUPPLY scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Iowa state page for a full comparison of water systems.