We keep a Brita and extra filters in one of our Owner's Lockers. However, before our OL's we would still tote the Brita back and forth as it was so easy and sooooo much cheaper. As far as faucet attached filter systems, we had originally tought of that until we spoke with a maintenance person at OKW. He was repairing our running toilet and we specifically asked about it. He said that as they replace or repair kitchen faucet they are using "loctite" to prevent the faucet end from being unscrewed, this was back in 2005 or 2006. Every now and then DH will check, he thought maybe the person just didn't want us unscrewing anything, most of the time the end won't unscrew by hand.