A well functionality test, also known as a well yield test, essential for determining the adequacy of water flow from a private well. Typically requested by prospective property buyers, this test aligns with home inspections and is often a requirement set by mortgage lenders. Most lenders generally seek a minimum flow rate of 3 gallons per minute over a two-hour period, so it's advisable to consult with your lender for any specific requirements. For water purity testing, results are provided by Adirondack Environmental.