• In this video, This Old House plumbing and heating expert Richard Trethewey cleans up some drinking-water problems.

    1. Remove aerator and rubber washer from sink faucet.
    2. Sterilize end of faucet with rubbing alcohol or propane lighter.
    3. Collect water sample and bring to local water-testing lab for analysis.
    4. Install a whole-house filtration system to remove sand and sediment from water. Replace sediment filter at least twice a year.
    5. Treat excessively hard water with a water softener. Replace salt in the storage tank, as needed.
    • Difficulty: Hard
      Professional installation required
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