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

    Steps:
    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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