Testing Your Private Well Water in New Hampshire and Vermont

Why it matters here

Many Upper Valley homes rely on private wells, and nobody tests that water for you. New Hampshire and Vermont both have natural arsenic, uranium and radon in their bedrock. You can't see, smell or taste them, so the only way to know is to test.

What to test for

The Vermont Department of Health and NH Department of Environmental Services both recommend a broad baseline test. After that, schedule follow-up tests:

• Bacteria (total coliform and E. coli): every year, and after flooding, heavy rain or well repairs.
• Arsenic, uranium, manganese, fluoride, lead and nitrate: as part of a full test every few years.
• Radon in water: especially in drilled (bedrock) wells.
• Retest when the taste, color or smell changes, or when a baby is expected in the home.

Getting a reliable sample

Order a kit from an accredited lab and follow its directions exactly. Many tests must reach the lab within a set time. Both states list accredited labs on their websites.

If something comes back high

Ask the lab or the state health program what your result means. Filters, softeners, UV systems and aeration units each treat different problems. Choose treatment based on your test results, then retest afterward to make sure it works.

Finding local help

Below are Upper Valley water treatment, well and testing professionals. Confirm credentials and lab partners directly with each company.