Low-cost state testing
Virginia Cooperative Extension runs well water clinics in about 70 counties a year, at $70 a kit. Check which tests it includes before you count on it for arsenic.
Virginia's private well pageArsenic in Virginia well water, by county
Arsenic is rare in tested Virginia wells: in all 5 counties with enough tests, fewer than 5% of tested wells were over the limit. A county's share tells you how likely a problem is nearby. Only a test of your own well tells you what's in it.
How Virginia compares with the rest of the country
Across Virginia, none tested wells had arsenic over the EPA limit of 10 µg/L (0 of 187). Across all tested wells in the US it's about 1 in 9. No tested Virginia well was over, but your own well can still differ, so test it if you're unsure.
Why it matters: Drinking it for years raises the risk of skin, bladder and lung cancer.
Arsenic dissolves out of certain rocks and old sediments, so it can be high even where nobody has polluted anything.
Arsenic in tested wells, county by county
Share of each county's tested wells with at least one result over the EPA limit of 10 µg/L. Counties need 10 or more tested wells to be listed. Widespread means 15% or more, worth checking 5 to 15%, rare under 5%.
| County | Wells tested | Wells over the limit | Level |
|---|---|---|---|
| Accomack County | 25 | Rare | |
| Northampton County | 20 | Rare | |
| Prince William County | 13 | Rare | |
| Rockingham County | 13 | Rare | |
| Fairfax County | 10 | Rare |
57 more Virginia counties have 1 to 9 tested wells for arsenic, too few to rate.
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Where to get your well tested for arsenic in Virginia
A lab Virginia certifies
Ask for arsenic by name. Results from a certified lab count for a home sale or a loan.
Labs certified by VirginiaA mail-in kit
Fill the bottles at your kitchen tap and mail them back. We mark the kits that include arsenic.
Compare kitsKeep reading about wells in Virginia
- Well water testing in Virginia: how to get tested and what turns up statewide
- Arsenic in well water: where it comes from, what it does and how to remove it
- Nitrate in Virginia wells, by county
- Manganese in Virginia wells, by county
- Lead in Virginia wells, by county
Questions people ask about arsenic in Virginia
Is there arsenic in Virginia well water?
Arsenic is rare in tested Virginia wells: in all 5 counties with enough tests, fewer than 5% of tested wells were over the limit. Across Virginia, none tested wells had arsenic over the EPA limit of 10 µg/L (0 of 187). Across all tested wells in the US it's about 1 in 9. No tested Virginia well was over, but your own well can still differ, so test it if you're unsure.
Where can I get my well tested for arsenic in Virginia?
Virginia Cooperative Extension runs well water clinics in about 70 counties a year, at $70 a kit. If that doesn't cover you, use a lab certified by Virginia for drinking water, or a mail-in kit that includes arsenic from a certified lab.
See Virginia's list of certified labs, or compare mail-in kits.
Where these numbers come from
- Lab tests: Water Quality Portal (USGS and EPA), well samples since 2000. A well counts as over if any of its tests was over the EPA limit of 10 µg/L. Wells tested for studies and monitoring, not a random sample of homes.
- Likely overstated: our own check of who tested the wells, when and where. How we check.
- State programs and links: Department of Health (VDH), Office of Environmental Health Services.