Well water in Ashe County, North Carolina

In Ashe County, 4% of 717 private wells tested between 1998 and 2019 had lead above the North Carolina groundwater standard (15 ug/L), according to the NC State Laboratory of Public Health (NCWELL).

717 private wells tested 1998 to 2019 in state summaries; 5 individual samples from 5 wells, 1997. Data refreshed September 9, 2026.

What homeowner tests found

NCWELL private well summaries: private wells tested and reported to the state, 1998 to 2019. Shares are against the level the state applies to each contaminant, named in the last column; several are stricter than EPA.

Contaminant	Wells tested	Above state level	Highest	State level
Iron	485	24%	17,000	300 ug/L
Manganese	717	13%	2,500	50 ug/L
Lead	717	4%	2,300	15 ug/L
Copper	486	<1%	1.41	1 mg/L
Nitrate	247	<1%	15	10 mg/L
Arsenic	717	<1%	58	10 ug/L
Nitrite	247	0%	0.49	1 mg/L
Uranium	2	0%	0.71	30 ug/L

Get the free Ashe County well report

One email with the numbers above, what they mean for a home in Ashe County, exactly which tests to order, and what treatment fits the local profile. No spam, unsubscribe in one click.

What this means

Among homeowners in Ashe County who sent a sample to the state lab, the health-based limits most often exceeded were lead (4% of 717 wells), copper (<1% of 486 wells), and nitrate (<1% of 247 wells). These are ordinary wells tested by their owners, so the shares are the best available picture of a typical well here, with one caveat: people test more often when they suspect a problem.

Iron and manganese exceed the state's advisory level in a sizable share of wells; these are mostly a taste, staining or diet issue rather than a toxicity one.

What to test for in Ashe County

Volatile organic compounds (VOCs)121 leaking underground storage tank sites on record locally.
Iron24% of 485 local wells tested were above the North Carolina groundwater standard.
Manganese13% of 717 local wells tested were above the North Carolina groundwater standard.
Lead4% of 717 local wells tested were above the North Carolina groundwater standard.
Copper<1% of 486 local wells tested were above the North Carolina groundwater standard.
Nitrate<1% of 247 local wells tested were above the EPA limit.
Arsenic<1% of 717 local wells tested were above the North Carolina groundwater standard.
Coliform bacteriaRecommended for every private well, every year.
RadonMedian local reading is 1,630 pCi/L.

Contamination sources on record in Ashe County

NC DEQ records 121 leaking underground storage tank sites in Ashe County, among 121 regulated sites in total. Groundwater does not follow property lines, so a well within a few hundred feet of one of these is worth testing for what that site could release.

121: leaking underground storage tank sitesGasoline and heating oil that leaked from tanks move through groundwater as benzene, MTBE and other volatile organic compounds.

Treatment that fits the local profile

Iron: Oxidizing filter whole-house; Water softener (low levels); Aeration plus filtration
Manganese: Oxidizing filter (greensand, birm) whole-house; Water softener (low levels); Point-of-use reverse osmosis
Fluoride: Point-of-use reverse osmosis; Activated alumina; Distillation
Chloride: Point-of-use reverse osmosis; Distillation

Get your Ashe County water tested at home

A licensed local water treatment company tests your tap water in your home, walks you through the numbers, and quotes treatment only if something needs fixing. Free, about 30 minutes, no obligation. Tell us what you need and we match you with a company that serves Ashe County.

Common questions

How high is radon in well water in Ashe County?

The median radon level across 5 public samples in Ashe County was 1,630 pCi/L, with a high of 8,190 pCi/L. New Hampshire recommends treatment above 2,000 pCi/L.

How often should I test a private well in Ashe County?

Test for bacteria and nitrate every year. Test once for arsenic, uranium, radon, fluoride, manganese and PFAS, then again every three to five years or after any change in taste, color, or plumbing.

Sources

USGS Water Quality Portal: 19 samples in Ashe County. Data from the Water Quality Portal, a service of USGS, EPA and USDA; groundwater samples collected by USGS and cooperators. Retrieved September 3, 2026.
NCWELL private well summaries: summaries for 8 contaminants in Ashe County, up to 717 wells each. County summaries of private well tests run by the NC State Laboratory of Public Health, 1998 to 2019, compiled by the UNC Superfund Research Program (NCWELL database). Counts are tests, not distinct wells; since 2008 every new well is tested once, so most tests are unique wells. Shares are against the NC 2L groundwater standard where one exists (manganese 50 ug/L, lead 15, iron 300) and otherwise the EPA limit. Medians are not used because more than half of results sit at the reporting limit for most analytes. Retrieved September 9, 2026.
NC DEQ regulated sites: 121 regulated sites located in Ashe County. Underground storage tank incidents from the North Carolina Department of Environmental Quality UST Section. Retrieved September 9, 2026.

Non-detects count as samples and are treated as zero when computing medians. Exactly at the limit counts as not above it. A sample belongs to the town containing the well's reported coordinates.