I use a small unit in the basement which I have plumbed into a 35 gallon trash can. There is a float valve on the trash can that turns off the water flow when the tank is full.
Consider getting a larger system than you think you need, and a air bladder pressure tank. Our RO unit is also plumbed to a special tap on the kitchen sink, and we use that for drinking water and cooking. Tastes better than the well water.
Unfortunately the guy who did my system (an orchid grower and professional water guy) passed away recently, or I'd recommend him. Find a reputable water quality specialist in your area, and you will get a better system. It will cost a bit more, but I think it is worth it. I've done my own setups for other houses in the past, it isn't difficult, but I guess I'm getting old and don't mind paying a bit extra for somebody else to do it.
__________________
Rob's Rules:  http://littlefrogfarm.com
1) There is always room for one more orchid
2) There is always room for two more orchids
2a) See rule 1
3) When one has insufficient credit to purchase more orchids, obtain more credit
|