Arsenic 10 ppb in Well Water: Is It Safe?

A 10 ppb arsenic result is at the federal limit, not a comfort target. Because arsenic risk is mostly long-term, many homeowners retest and consider treatment to reduce exposure further.

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Tests to run

Arsenic
pH
Iron
Manganese
Phosphate

Next steps

Retest with a certified lab to confirm the result.
Use treated or alternate water for drinking and cooking if household risk is a concern.
Check pH, iron, and competing ions because they affect treatment choice.
Verify any arsenic treatment with a post-installation lab test.

FAQ

Is 10 ppb arsenic completely safe?

It is the regulatory limit for public water systems, but lower exposure is generally preferred when practical.

Does reverse osmosis remove arsenic?

Reverse osmosis can reduce many arsenic forms, but performance depends on water chemistry and maintenance. Verify with testing.

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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.

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