Wells

Homes and businesses in Arlington get water from the Potomac River. The Dalecarlia Water Treatment Plant treats the water and sends it through more than 500 miles of pipeline. Learn more on Arlington’s Water Utilities page.

Some properties have unused wells, often uncovered during construction. Arlington’s Public Health Division helps residents manage wells—whether sealing old ones or installing geothermal systems.

Drilling or Sealing a Well

To seal a well:

• Contact Arlington’s Public Health Division at 703-228-7444, option 4 or ehealth@arlingtonva.us. We coordinate with Fairfax County for well permits and inspections.
• Hire a licensed well driller. Fairfax County provides a list of contractors on their website.
• Get a permit
• Follow Virginia law (See 12VAC5-590-475 and 12VAC5-630-450)

Geothermal Wells

Geothermal wells use heat from underground to warm and cool buildings. They’re becoming more common as a way to cut energy costs and protect the environment.

To install a geothermal well:

• Contact Arlington’s Public Health Division at 703-228-7444, option 4 or ehealth@arlingtonva.us. We coordinate with Fairfax County for well permits and inspections.
• Hire a licensed Well Water Supply Provider. Fairfax County provides a list of contractors on their website.
• Get a permit