How to Test for Hard Water and Add Softeners

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.