Well Water Test Before Buying a House: What to Include

Before buying a house with a private well, test bacteria, nitrate, arsenic, lead, pH, hardness, iron, manganese, TDS, and local contaminants such as uranium, radon, PFAS, pesticides, or VOCs.

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Tests to run

Total coliform
E. coli
Nitrate
Arsenic
Lead
pH
Hardness
Iron
Manganese
TDS

Next steps

Order a certified lab test before the inspection contingency expires.
Include bacteria and core chemistry, not just a basic potability screen.
Review nearby land use, septic distance, flooding history, and local geology.
Save the baseline report for future annual comparison.

FAQ

Is a bacteria test enough before buying a house?

No. Bacteria is important, but it does not check nitrate, arsenic, lead, hardness, pH, or local contaminants.

Who pays for well water testing when buying a house?

It depends on the contract and local practice. Buyers often request testing as part of inspection negotiations.

Download iOS App

Interpret once on the web. Track forever in the app.

Save test history, set annual reminders, compare results over time, and create a shareable report.

Download the iOS app

Educational guidance only. Always confirm important decisions with a certified laboratory, local health department, qualified water treatment professional, or clinician.