This page may contain affiliate links. If you buy through them, we may earn a commission at no extra cost to you. Learn more.
There are three ways to test a private well: DIY strips and kits, mail-in lab tests you order online, and a state-certified laboratory (often arranged through your health department). They aren’t interchangeable.
- DIY strips and kits are quick screening tools. They can flag a possible problem, but they aren’t a basis for health decisions.
- Mail-in lab tests send your sample to a laboratory. Check whether the lab is certified for the tests you need.
- A state-certified lab is the standard for health decisions like bacteria, nitrate, arsenic, lead and PFAS. Find a state-certified lab (EPA directory) →
Compare your options:
– Best Well Water Test Kits 2026: DIY Kits vs Mail-In Labs
– Tap Score vs Your State-Certified Lab vs DIY Strips
Considering a mail-in lab test? Tap Score: Essential well water test →
Not sure which tests to order? Read what to test your well water for first. Once your results come back, see how to read them.
General information, not medical advice. For health decisions, use a state-certified lab and contact your state or local health department.