B70/100
WASHINGTON COUNTY WATER COMPANY — Water Quality Report 2026
Serving 11,374 people · Illinois
Water Source
Purchased Surface Water
County
—
System ID
IL1895600
Violations
8
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 290.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 WASHINGTON COUNTY WATER COMPANY
Is WASHINGTON COUNTY WATER COMPANY water safe to drink?
WASHINGTON COUNTY WATER COMPANY water receives a grade of B (70/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WASHINGTON COUNTY WATER COMPANY detected?
69 contaminants were tested in WASHINGTON COUNTY WATER COMPANY's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does WASHINGTON COUNTY WATER COMPANY have any EPA violations?
Yes, WASHINGTON COUNTY WATER COMPANY has 8 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, TT, MR. 4 are health-based violations.
How many people does WASHINGTON COUNTY WATER COMPANY serve?
WASHINGTON COUNTY WATER COMPANY serves approximately 11,374 people, Illinois. The system provides water to 1 community: Nashville.
What type of water does WASHINGTON COUNTY WATER COMPANY provide?
WASHINGTON COUNTY WATER COMPANY 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 IL1895600.
How does WASHINGTON COUNTY WATER COMPANY compare to other utilities in Illinois?
WASHINGTON COUNTY WATER COMPANY scores 70/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Illinois state page for a full comparison of water systems.