F0/100
DIXON — Water Quality Report 2026
Serving 15,096 people · Illinois
Water Source
Groundwater
County
—
System ID
IL1030200
Violations
44
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 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: April 1, 2022 – June 30, 2022Enforcement: 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 DIXON
Is DIXON water safe to drink?
DIXON water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 44 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has DIXON detected?
66 contaminants were tested in DIXON's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does DIXON have any EPA violations?
Yes, DIXON has 44 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MCL, Other. 40 are health-based violations.
How many people does DIXON serve?
DIXON serves approximately 15,096 people, Illinois. The system provides water to 1 community: Dixon.
What type of water does DIXON provide?
DIXON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1030200.
How does DIXON compare to other utilities in Illinois?
DIXON scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Illinois state page for a full comparison of water systems.