I used to buy my water at one of the filtration shops in a mini mall in Mountain View, CA. It was around $0.25 a gallon. Tasted great and was a lot cheaper than rigging a filter. The shop was run by a Korean lady who sold a lot of reverse osmosis systems she imported from Korea.
At the Korean food court in Santa Clara there are all these little table top filtration units that are fed by ice maker lines. THe water tastes great. I notice the South Koreans are really up on their water filtration. Does the water suck over there?
I also noticed while traveling in Maryland recently, the hotel ice maker had a cartridge filter on he back of it made in - you guessed it- Korea. It must be cultural.
Anyhow if I were to look into something beyond Brita, I'd head to Korea town and start asking questions. Have you noticed how Korean BBQs always have one of those water filtering machines with free cups and a bunch of brochures stuck to the side of it? And the water tastes great. And it's such an inside thing...they don't sell them to mainstream America like Samsung phones.
It's a good excuse to head down to Korea town for some short ribs.
Edit - I just got back from the Korean market in Irvine. While shopping for bulgogi sauce I saw the kiosk for Coway water filtration systems.
http://coway-usa.com/index.php?route=pr ... duct_id=58
The saleswoman gave me the rundown on it. She says Korean people (south?) don't drink tap water and won't drink bottled water. Really?
Ok. Every home in Korea has some type of water filter. So she claimed it is like having a Mr. Coffee on the counter. It looks like a system costs $600 with annual filter swaps of $150 (five filters to replace). I looked at the rig and it looks like a ripoff. It goes inline with the plumbing and slowly filters into a 3 gal pressure tank. I mean, it looks like a good system and the flavor of the water was an improvement over tap, but $600 seemed like a lot to pay if $150 of it is filters.
The system looks like a GE whole house on steroids. More cartridges. Carbon, two sediment and two RO.
Seriously the five filters are just plumbed together in series with ice maker line and compression fittings. I'm tempted to buy her filters and just plumb them together with swagelok and put a little well tank on the side. That's pretty much what they sell. My water is pretty clean already so I'm not sure how often I'll need to change things. I bet if you put a cheap GE spun poly 5 micron up front you can save he expensive ones downstream.
I'm thinking of building it all into a milk crate like my biodiesel filter rig. T off my ice maker and put a little tap on the side of my fridge (I don't have a water dispenser).
I'm not going to spend $600 on this thing. It's too easy to build.
Edit 2 - oh man, I just typed in "reverse osmosis water filter system" on eBay and a whole bunch of systems came up. They look comparable for a small fraction of the price.