How to Choose the Right Water Filter

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Ask This Old House plumbing and heating expert Richard Trethewey explains how to choose the right water filter for different water quality issues.

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Time: at least 1 hour

Cost: -00

Skill Level: Beginner

Shopping List:
Water quality test kit
Water filter

1. Purchase a water quality home test kit.
2. Follow the instructions on the kit and wait for results on water quality issues.
3. Based on the results of the test, choose a filter that will treat the water quality issue.

All the filters Richard demonstrated, including the granular activated carbon filters, sink mounted filters, sediment filters, and water softeners can be purchased at a home center or plumbing supply store.

Expert assistance for this segment was provided by Morris Merchants (

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