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The salt water would probably be too corrosive to pipe significant distances, which would make that difficult to get enough scale to make it feasible. Most of

The salt water would probably be too corrosive to pipe significant distances, which would make that difficult to get enough scale to make it feasible. Most of the dual-use water systems I’ve read about were fresh water vs gray water.

TylerE 8y ago
Much piping these days (>75% for major distribution pipes, and increasingly common in residential use) is PVC, which doesn't corrode.
- zikzak 8y ago
  Salt and minerals get into fittings, destroy valves, and coat everything when the water evaporates. Probably not a great solution.
  - baldfat 8y ago
    You would have to purge your system and shower head with vinegar every day just to keep things clean.
aclsid 8y ago
You are assuming that only metal pipes exist. Nowadays most pipes are made by either concrete for the big ones (canal like) or plastic connected with glue that is rated for hot or cold water.