We don't, generally connect to "city" water as we tend to not stay put for very long. We are more tourers than destinationers. Anyway, as I dewinterized I noticed sediment in the water heater drain pl...
You don't have to order from this company but check out their site for very good water filtering information. Give them a call and ask what they'd recommend dependent on your style and length of camping trips. Also ask what to do with the filter in between trips. Some store it in their freezer.