For people who rely on a private well: what to test, sample, and understand before you buy treatment.

More Guides

More guides for private well owners

Help with the everyday side of owning a well: who to call, what to ask, how to read the paperwork, and how to keep your water system in good shape. New guides are added each week. For buying, owning, and first-well basics, see our starter guides.

Testing and Lab Results

Questions to Ask Your Local Health Department About Your WellYour county or state health department often knows things about local groundwater that no website can tell you. Here is how to reach the right office and what to ask so the call is worth your time.