A92/100
CALHOUN-CHARLESTON U.D. — Water Quality Report 2026
Serving 2,895 people · Tennessee
Water Source
Purchased Surface Water
County
—
System ID
TN0000106
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2011.
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 CALHOUN-CHARLESTON U.D.
Is CALHOUN-CHARLESTON U.D. water safe to drink?
CALHOUN-CHARLESTON U.D. water receives a grade of A (92/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CALHOUN-CHARLESTON U.D. detected?
1 contaminants were tested in CALHOUN-CHARLESTON U.D.'s water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CALHOUN-CHARLESTON U.D. have any EPA violations?
Yes, CALHOUN-CHARLESTON U.D. has 5 EPA violation(s) on record, with the most recent in 2011. Violation types include MR, Other.
How many people does CALHOUN-CHARLESTON U.D. serve?
CALHOUN-CHARLESTON U.D. serves approximately 2,895 people, Tennessee.
What type of water does CALHOUN-CHARLESTON U.D. provide?
CALHOUN-CHARLESTON U.D. 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 TN0000106.
How does CALHOUN-CHARLESTON U.D. compare to other utilities in Tennessee?
CALHOUN-CHARLESTON U.D. scores 92/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Tennessee state page for a full comparison of water systems.