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Well Water Testing Basics

Test private well water regularly

This guide explains how to test private well water: choose tests for bacteria, nitrates, and region-specific contaminants, collect samples properly, and set a routine testing schedule.

Pick tests

Test annually for coliform bacteria, nitrates, and any known local contaminants (e.g., arsenic).

Collect samples correctly

Use clean bottles, avoid touching inside caps, and follow lab timing/shipping rules.

Set a schedule

Test yearly, after floods/repairs, or if taste/odor changes.

Act on results

If contaminants exceed limits, use certified treatment or remediation.

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