Unit seems well constructed and the principle on which it works is plausible. The only potential concern I have is if the sterilization chamber offers enough contact time with a theoretical drop of water flowing through the chamber. It claims a flow rate of 2 gal/min, but I have no idea if that would allow sufficient time. I haven't tied this in yet. The only other concern would be leaking, but that could be just as likely due to installation as design and dealt with just as any other leak(PTFE tape, tighten connections. Pex icemaker supply line would seem the perfect way to plumb the device as other than a bracket and the bulb it would seem as in every endeavor, we are on our own and free to proceed as our hearts desire and to succeed or fail based upon our own merit or shortcomings.