Currently, we have the water coming from our pressure tank filtered through a 20x4" sediment filter and then a 20x4" carbon filter, then through the UV. We also have a smaller RO for the refrigerator/ice maker and a spigot at the sink (although, with the UV we have no problem drinking from any faucet, it just seems to taste better from the RO). Generally, this is fine, except for the really bad drop in water pressure. Our upstairs shower is barely a dribble, and if someone flushes a toilet, it disappears...
I have been looking into a
pre-filter before the pressure tank, which I think will solve some of this problem. I can remove the sediment through this and then only have the carbon after the pressure tank. Also, the lake clogs the filters, so we end up changing them several times a season - this pre-filter can be purged and should save us some money on new filter elements.
I would say to LI, you should def get the UV. It installs in the main line, doesn't impact the pressure, and gives you significant piece of mind. The lake is clean, but if you happen to get wildlife doing what they do in the lake, you could get a bad case of a bacterial problem... There is a big difference between swimming and drinking the water.