A83/100
COLUMBIA POWER AND WATER SYSTEMS — Water Quality Report 2026
Serving 84,617 people · Tennessee
Water Source
Surface Water
County
—
System ID
TN0000128
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 230.00 µg/L | — | Above Goal |
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 1991.
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 COLUMBIA POWER AND WATER SYSTEMS
Is COLUMBIA POWER AND WATER SYSTEMS water safe to drink?
COLUMBIA POWER AND WATER SYSTEMS water receives a grade of A (83/100), which is considered excellent. 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 COLUMBIA POWER AND WATER SYSTEMS detected?
69 contaminants were tested in COLUMBIA POWER AND WATER SYSTEMS's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does COLUMBIA POWER AND WATER SYSTEMS have any EPA violations?
Yes, COLUMBIA POWER AND WATER SYSTEMS has 3 EPA violation(s) on record, with the most recent in 1991. Violation types include MR, MCL. 2 are health-based violations.
How many people does COLUMBIA POWER AND WATER SYSTEMS serve?
COLUMBIA POWER AND WATER SYSTEMS serves approximately 84,617 people, Tennessee. The system provides water to 1 community: Columbia.
What type of water does COLUMBIA POWER AND WATER SYSTEMS provide?
COLUMBIA POWER AND WATER SYSTEMS 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 TN0000128.
How does COLUMBIA POWER AND WATER SYSTEMS compare to other utilities in Tennessee?
COLUMBIA POWER AND WATER SYSTEMS scores 83/100 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.