Returned on site to install halo h20 ultimate 150 with a prefilter, we turned the water off at the meter box and drained the entire home down. We first began by cutting out the old main water shut off and prv and replaced them both. We then built up the bypass system and tied the filtration system in. Backwashed filter for almost an hour until water was pure and clear. Client is happy with work performed, as stated water is back on with no leaks.