How often should a private well near Hamilton be tested?

Name: Joiner Micro Laboratories Inc
Address: 77 W Lee St #202, Warrenton, VA, 20186, US
Telephone: +1-540-347-7212
Price range: $$
Rating: 5.0

Joiner Micro Labs notes that the EPA recommends testing private well water at least annually. Additional testing may be appropriate when the well, plumbing, surrounding property, or water itself changes.