clock menu more-arrow no yes

How to Choose a Water Filter

Ask This Old House plumbing and heating expert Richard Trethewey explains the many filter options and home water systems available for filtering drinking water

In this video, Ask This Old House plumbing and heating expert Richard Trethewey explains the many options available for filtering drinking water.

Steps:

1. The simplest way to filter tap water is with a pitcher-style water filter, which has a granulated carbon filter that improves taste and odor, and removes some chlorine and sediment.

2. Faucet-mounted filters have a switch that diverts tap water through a granulated carbon filter. Turn on the switch for filtered drinking water; flip it off when washing dishes.

3. For greater water filtration convenience and capacity, install an under-sink, dual-filter system that has its own gooseneck faucet.

4. For optimum point-of-use filtration, consider a reverse-osmosis system. Water passes through a series of three filters, resulting in extremely clean, pure drinking water.

5. Whole-house water filters are installed near the water main and are ideal for delivering clean, filtered water to every faucet throughout the entire house.

6. There are a variety of filters available to remove a wide range of impurities.

7. Sediment filters contain a stainless-steel pre-screen filter and back-flush system that automatically cleans the filter.

8. For the highest level of water filtration, first have your tap water tested, then call in a water-treatment specialist to install a whole-house filtration system designed specifically to treat your water.