The trick is to have clean water going in to the RV. I use the same set up on my RV as I do on my house well and I never buy bottled water. Everyone else in our area buys bottled water either at the store or from a delivery service. Set up a double 2.5" x 10" filter system with or without a regulator, your choice. In the first filter install a 1 micron spun poly filter and a .5 micron charcoal filter in the second housing. At the house I replace filters monthly, approximately 2900 gallons, and on the RV I remove the old filters when I get home and install new when I leave on the next trip. Filters cost me from $7.00 to $9.00 a pair depending on price fluctuations. After having lived in an area with $100/month water bills even $15.00 for filters is cheap. Good, clean water in to the RV or house eliminates a lot of other issues in a water system. My neighbors ignored their 20+ year old filter system and had to replace their washer, water heater and dishwasher when they were only about 8 years old.
