Annual baseline
EPA recommends private well owners test yearly for total coliform bacteria, nitrates, total dissolved solids, and pH.
Test kits
Choose the test before choosing the filter.
Use this hub for annual baseline testing, symptom-driven add-ons, and deciding when a certified lab is the better path.
Home kit vs lab
Home kits can screen quickly. Labs are better for health-related decisions, real estate, repeated failures, and baby formula concerns.
Symptom add-ons
Orange stains, rotten egg odor, cloudy water, or black specks should guide added tests for iron, manganese, sulfur species, sediment, or other local issues.