Capital Well is proud to announce it is now offering full service irrigation services across all of New Hampshire.
Click here to book your winterization appointment or to learn more about our full suite of irrigation services!

Where Water Meets Innovation

Since 1986, Capital Well has been providing water well treatment and maintenance to homes and businesses across New Hampshire

NO H2O or Water 911 Emergency? On-Call Service 24/7! 800.924.1192

Read More About Our New Hampshire Drought Assistance Program Application here.

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Private Well Class for New Hampshire Homeowners

View our in-depth discussion on the mechanics and best practices for well owners in New Hampshire.

Customer Resources

From buying or building your new home to updating an existing home or business, Capital Well can service all your water needs. Click below to learn more about the service that is right for you.

Bladder Cancer

NH has 37% higher bladder cancer rate compared to the national average, according to the CDC due to arsenic levels in private water wells

Cancer Risk

Cancer risk among people drinking chlorinated water is 93% higher compared to those whose water does not contain chlorine, per the USCEQ.

Private Wells

40% of all private wells in NH that exceed the recommended radon levels, per the NH DES.

Make sure your water is clean. Contact us to schedule a water test or consult.


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We’re working to provide clean water to people across the globe.

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Let us help you to get the best quality water in your home while making sure NH kids have food security when returning to school this year. To support Drinking Water Awareness Month, Capital Well will donate 10% off all water treatment to the Backpack Program through September!

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