A92/100
Union City Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 16,180 residents · Tennessee
What's In Union City's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
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
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 19, 2024Enforcement: 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
Water Utility Details
UNION CITY WATER DEPT
Population Served
16,180
Water Source
Groundwater
System ID
TN0000720
Frequently Asked Questions About Union City Water
Is Union City tap water safe to drink?
Union City, Tennessee tap water receives a grade of A (92/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Union City's water?
Of the 66 contaminants tested in Union City's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Union City have any water quality violations?
Yes, Union City has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Union City?
Union City water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Union City's tap water come from?
Union City's drinking water is sourced from groundwater and supplied by UNION CITY WATER DEPT. The system serves approximately 16,180 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Union City's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Union City's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Union City's water compare to other cities in Tennessee?
Union City's water quality score of 92/100 earns a grade of A, which is considered excellent. This places Union City among the better-performing water systems in Tennessee. Visit our Tennessee state page to see how all cities in the state compare.
What should I do if I'm concerned about Union City's water quality?
If you have concerns about Union City's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (UNION CITY WATER DEPT) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.