City water is used when you are at a place that supplies water for you through the use of a faucet. Hook hose from faucet to city water inlet and youll have water when needed. Fresh water is used to fill up the water holding tank when you are going somewhere that doesnt provide water.

What is city water connection on RV?

Fresh Water: Using a “City Water” Connection Most RV campgrounds have a city water connection. This is a faucet at your campsite that allows you to connect your RV directly to a city water supply.

How do I keep water fresh in my RV tank?

Regularly sanitizing the tank ensures that the water you store in that tank also stays clean. The standard method of sanitizing a fresh water tank is to add a bleach and water mixture. Using a ratio of 1/4 cup of bleach for every 15 gallons of tank capacity, add this mixture to your fresh water tank.