In Part 1, published in this magazine’s February 2022 issue, we talked about why buildings lean, how this phenomenon affects plumbing systems and drain lines, and how low-flow fixtures compound this problem.

Back in October 2020, Cory Powers wrote Part 1 of this article, introducing myself, and my Master’s capstone project focusing on one of the hottest topics in the plumbing industry — Legionella

In nearly every building in America, tub-shower valves with integral maximum-temperature limit stops, field-adjusted to limit the maximum setting of the valve to 120 F, are code-required.