A95/100
SPRINGFIELD — Water Quality Report 2026
Serving 117,444 people · Illinois
Water Source
Surface Water
County
—
System ID
IL1671200
Violations
5
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: 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 SPRINGFIELD
Is SPRINGFIELD water safe to drink?
SPRINGFIELD water receives a grade of A (95/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SPRINGFIELD detected?
76 contaminants were tested in SPRINGFIELD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SPRINGFIELD have any EPA violations?
Yes, SPRINGFIELD has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does SPRINGFIELD serve?
SPRINGFIELD serves approximately 117,444 people, Illinois. The system provides water to 1 community: Springfield.
What type of water does SPRINGFIELD provide?
SPRINGFIELD sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is IL1671200.
How does SPRINGFIELD compare to other utilities in Illinois?
SPRINGFIELD scores 95/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Illinois state page for a full comparison of water systems.