PurTest PURPG-8 UV Water Purifier

All buyers: search PurTest installation on YouTube, there's a video of a gentleman who went through all the mistakes that can be made by following the factory directions. I didn't need to consult the manual after watching that video.My water was failing with 50ppm of coliform, now with this purifier the lab says my water is some of the cleanest they've seen. I would have paid double for this peace of mind,