D24/100
Mayfield Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 25,615 residents · Kentucky
What's In Mayfield's Tap Water?
73
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 308.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – June 29, 2022Enforcement: 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
GRAVES CO WATER DIST - HICKORY
Population Served
4,069
Water Source
Groundwater
System ID
KY0420194
GRAVES CO WATER DIST - FANCY FARM
Population Served
1,301
Water Source
Groundwater
System ID
KY0420027
GRAVES CO WATER DIST - CONSUMERS
Population Served
5,016
Water Source
Purchased Groundwater
System ID
KY0420084
GRAVES CO WATER DIST - HARDEMAN
Population Served
1,006
Water Source
Purchased Groundwater
System ID
KY0420172
MAYFIELD ELECTRIC & WATER
Population Served
12,379
Water Source
Groundwater
System ID
KY0420274
GRAVES CO WATER DIST - SOUTH GRAVES
Population Served
1,844
Water Source
Groundwater
System ID
KY0420405
Frequently Asked Questions About Mayfield Water
Is Mayfield tap water safe to drink?
Mayfield, Kentucky tap water receives a grade of D (24/100), which is considered poor. 1 contaminant(s) exceed EPA maximum contaminant levels and 392 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Mayfield's water?
Of the 74 contaminants tested in Mayfield's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), chlorate. 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Mayfield have any water quality violations?
Yes, Mayfield has 392 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, TT, MR. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Mayfield?
Based on EPA data, using a water filter in Mayfield is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Mayfield's tap water come from?
Mayfield's drinking water is sourced from groundwater and supplied by GRAVES CO WATER DIST - HICKORY and 5 other water system(s). The system serves approximately 25,615 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Mayfield'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. Mayfield'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 Mayfield's water compare to other cities in Kentucky?
Mayfield's water quality score of 24/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Kentucky state page to see how all cities in the state compare.
What should I do if I'm concerned about Mayfield's water quality?
If you have concerns about Mayfield'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 (GRAVES CO WATER DIST - HICKORY) 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.