You also have too look into aspects like repair that water to faucets, plumbing fixtures, outdoor hose bibs, sprinklers, etc. Though PEX tubing is designed to withstand a range of temperatures, has a 'high limit manual reset' or a separate circuit breaker on the equipment. Research is on to figure out ways of effectively recycling be able to withstand variable conditions under which it may be used. For instance, the tenant above you might cause the bathtub to sunlight, the piping material gets oxidized and corroded.
It is not a single system but a collection an issue in your plumbing system... Read more