Henderson County, North Carolina: drinking water report. Henderson County – Hendersonville – serves about 120,000 residents south of Asheville.
Henderson County – Hendersonville – serves about 120,000 residents south of Asheville. Water comes from Mills River and other Blue Ridge Mountain streams. The county's mountain setting provides naturally clean source water with minimal industrial or agricultural contamination.
Henderson County's mountain watersheds produce high-quality source water. UCMR5 data shows no significant PFAS detections. According to NC DEQ's 2024 data, county systems met all federal standards. Like neighboring Buncombe County, flood vulnerability is the primary infrastructure risk.
Henderson County's water quality is excellent by any standard. Mountain source water is the county's greatest asset.
Check your water for data in your area. Our water filter guide covers options if desired. Pull your detailed report, and visit our North Carolina page for statewide data.
Drinking water is one exposure route. These federal datasets also cover Henderson County, NC.
The EPA places Henderson County, NC in Zone 1 - the EPA's highest-risk category, where the predicted average indoor radon level is above 4 pCi/L. Zone maps predict an area's radon potential from geology and existing indoor readings; they say nothing about a specific house. Testing is the only way to know your own level.
36% of homes in Henderson County, NC were built before 1980, and 7% before 1950. Residential lead paint was banned in 1978, so housing age is the strongest available proxy for lead-paint exposure. This describes the county's housing stock, not any one home.
Modelled annual fine-particle pollution (PM2.5) in Henderson County, NC averages 6.6 µg/m³, within the EPA's annual standard of 9 µg/m³. These are CDC modelled county estimates rather than readings from a specific monitor.
How radon zones work · Air quality by county · Lead exposure guide