C50/100
SOUTH ELGIN — Water Quality Report 2026
Serving 23,648 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0890800
Violations
13
Contaminant Test Results
4 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
strontium | 2069.81 µg/L | — | Above Goal |
1,4-dioxane | 0.426 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Unresolved
Consumer confidence report — content deficiency
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: July 13, 2024 – September 10, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – June 27, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
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, 2023 – February 28, 2024Rule: Ground Water 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 SOUTH ELGIN
Is SOUTH ELGIN water safe to drink?
SOUTH ELGIN water receives a grade of C (50/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 13 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SOUTH ELGIN detected?
67 contaminants were tested in SOUTH ELGIN's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), strontium, 1,4-dioxane. 1 exceed EPA legal limits (MCLs). 4 exceed EPA health goals (MCLGs).
Does SOUTH ELGIN have any EPA violations?
Yes, SOUTH ELGIN has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include TT, Other, MR. 5 are health-based violations.
How many people does SOUTH ELGIN serve?
SOUTH ELGIN serves approximately 23,648 people, Illinois. The system provides water to 1 community: South Elgin.
What type of water does SOUTH ELGIN provide?
SOUTH ELGIN sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0890800.
How does SOUTH ELGIN compare to other utilities in Illinois?
SOUTH ELGIN scores 50/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Illinois state page for a full comparison of water systems.