PFAS in Drinking Water in Kentucky
What residents of Kentucky need to know about PFAS ("forever chemicals") in drinking water — including contamination sources, which utilities have documented violations, and how to filter PFAS from tap water.
Source: EPA SDWIS, Kentucky Division of Water, CDC · Last reviewed: 2025-01-01
Quick Answer
Is PFAS in drinking water a real concern in Kentucky?
PFAS contamination in Kentucky is primarily associated with Fort Campbell (on the Kentucky-Tennessee border), the Blue Grass Army Depot in Richmond, and industrial sites in the Louisville-Jefferson County corridor. Fort Campbell's AFFF use has generated documented PFAS in groundwater near the installation. Multiple Kentucky public water systems have reported detections through UCMR5.
Where does PFAS come from in Kentucky?
Fort Campbell, straddling the Kentucky-Tennessee border, is the primary military PFAS source affecting Kentucky communities. AFFF from flight operations and fire training has contaminated surrounding groundwater in Christian and Trigg counties. Industrial PFAS from manufacturing facilities in the Louisville area also contributes to PFAS loading in the Ohio River and urban groundwater.
What should Kentucky residents know?
Christian County and Trigg County communities near Fort Campbell, and private well owners in these areas, face the most direct risk. Louisville area residents drawing from Ohio River water should review their utility's PFAS data, as the Ohio River carries industrial PFAS loading from upstream states including Ohio, Indiana, and West Virginia.
Key Facts
| EPA MCL (PFOA/PFOS) | 4 ppt — effective April 2024 |
| MCLG | Zero |
| Primary contamination sources | Fort Campbell (Christian/Trigg counties), Blue Grass Army Depot (Madison County), Louisville industrial corridor |
| Ohio River concern | PFAS loading from upstream industrial states — affects Louisville Water Company's source water |
| State regulator | Kentucky Division of Water |
| Health effects | Cancer (kidney, testicular), thyroid disruption, immune effects, developmental toxicity |
| Effective treatment | Reverse osmosis or GAC; Ohio River utilities evaluating treatment upgrades |
Why PFAS Matters in Kentucky
Fort Campbell — home of the 101st Airborne Division — is one of the largest Army installations in the country and a significant PFAS contamination source. The base's AFFF use history has generated documented plumes in the Kentucky-Tennessee border region. Louisville's water utility draws from the Ohio River, which carries PFAS from upstream sources across the industrial Midwest. Kentucky Division of Water has expanded PFAS testing and is working with utilities to assess treatment needs under the new EPA MCL.
Kentucky PFAS Regulation
Kentucky Division of Water participates in UCMR5 monitoring for large systems. Fort Knox, Fort Campbell, and Blue Grass Army Depot are Kentucky military installations with documented AFFF use histories requiring PFAS assessment. Kentucky does not have a state PFAS MCL more protective than federal.
Largest Kentucky Water Utilities
No PFAS violations on record in EPA SDWIS for Kentucky utilities in our database. Browse the largest utilities to review their full water quality record.
What Are PFAS (“Forever Chemicals”)?
PFAS are a family of over 12,000 synthetic chemicals used in non-stick cookware, stain-resistant fabrics, food packaging, and AFFF firefighting foam. Their carbon-fluorine bonds do not break down in the environment or the body — hence the name “forever chemicals.” AFFF used at military bases is the single largest source of PFAS in U.S. drinking water.
Full PFAS overview — national data, health effects, all 50 statesWho Should Pay Closest Attention
Clarksville (Tennessee, but sharing watershed concerns with adjacent Kentucky communities), Hopkinsville, and rural Christian and Trigg county residents near Fort Campbell face the highest risk. Louisville water customers should review Ohio River PFAS monitoring data from Louisville Water Company.
Residents near military bases with AFFF use history
Private well owners near military or industrial sites
Pregnant residents and families with young children
Residents in communities with documented PFAS detections
Anyone who has consumed water above 4 ppt for an extended period
Residents near airports, fire training areas, or industrial manufacturers
How to Check Your Situation in Kentucky
- 1
Identify your water utility using the ZIP lookup below or by browsing the Kentucky utility directory on this site.
- 2
Review your utility's Consumer Confidence Report (CCR) — it must report PFAS monitoring results under UCMR5 and the new MCL.
- 3
Check the EPA's ECHO database for your utility's monitoring history. Look for PFAS, PFOA, PFOS, and related compound results.
- 4
Contact your utility directly and ask for their most recent PFAS test results and whether they are implementing treatment under the 2024 MCL.
- 5
If you use a private well near a military base, airport, or industrial facility, order a PFAS panel test from a state-certified laboratory. Tests typically cost $150–$400.
- 6
If PFAS is detected above 4 ppt in your source water, install a certified NSF/ANSI 58 reverse osmosis system or an NSF/ANSI 53-certified activated carbon filter rated for PFAS removal.
How to Remove PFAS from Tap Water
Reverse Osmosis (Best)
90–99% removal — NSF/ANSI 58 certified systems only
Certified Activated Carbon
Effective with NSF/ANSI 53 or 58 certification — verify before buying
Boiling concentrates PFAS. Standard pitcher filters and water softeners do not remove PFAS. Always verify NSF certification before purchasing.
Take Action Now
Look up your Kentucky utility's PFAS monitoring history on the PFAS Watchlist below.
If your utility has detected PFAS above 4 ppt, install an NSF/ANSI 58-certified reverse osmosis system at your drinking tap.
Private well owners near military or industrial sites should order a PFAS panel test ($150–$400 at a state-certified lab).
Request your utility's most recent Consumer Confidence Report — PFAS results must be disclosed under the new 2024 MCL.
Frequently Asked Questions
Related Pages
PFAS — National Overview
All U.S. utilities with PFAS records
Kentucky PFAS Watchlist
Live utility PFAS monitoring data
Kentucky State Overview
All utilities and water quality data
Reverse Osmosis Guide
Removes 90–99% of PFAS
Activated Carbon Filter Guide
NSF/ANSI 53/58 certified options for PFAS
Arsenic in Drinking Water
Another priority contaminant
All Contaminants
Complete reference library
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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Kentucky Division of Water ↗