Food Grade Water Hoses
The Frugal Choice: Camco TastePURE 25' and 50' Options
These are inexpensive and work fine.
Your First Upgrade: Valterra EZ Coil
Some RVers find rolling up and storing a regular hose to be cumbersome and awkward. This hose solves those problems.
The Savvy Sweet Setup: Camco Heated Hose 12' and 25' options
Frozen water lines are a real pain to deal with. Aside from the problems at your RV, sometimes the hydrant has to be dug up underground to repair the break. If there's any chance of freezing temps, these heated hoses can save you a lot of money and hassle.