Private well water questions

EPA recommends annual testing for total coliform bacteria, nitrates, total dissolved solids, and pH, plus additional testing after flooding, repairs, nearby contamination, or changes in taste, odor, or appearance.

You can, but it is risky. A filter should match the contaminant, concentration, flow rate, and point of use. Testing gives you the basis for that decision.

Generally, private wells are the owner’s responsibility and are not federally regulated like public water systems under the Safe Drinking Water Act.

Yes. NSF/ANSI standards help verify specific product claims. The relevant standard depends on the contaminant and product type.

Sometimes for screening. Use certified lab testing when the result affects health decisions, real estate, babies, pregnancy, or expensive treatment equipment.