We moved ours indoors to under our sink as well due to getting to cold in our rig's wet bay. Don't find a need to filter shower, toilet, or dish water although we have an external filter we could hook up, under most circumstances we bring city water from home and use our FW pump. We get our dual filtration system/filters from Lowes, Home Depot, good variety on Amazon if you don't want to hassle with big box stores. Fittings can be had from locations above to easily integrate into plumbing under sink. After all that, we drink bottled water and use filtered water primarily for cooking.
