Detroit's water hardness averages 120 to 150 milligrams per liter, classified as moderately hard. Calcium and magnesium deposits accumulate inside valve cartridges, restricting the spool movement that controls temperature and flow. Over time, the buildup causes stiff handles, inconsistent water temperature, and reduced pressure. Homeowners in areas near the Detroit Water and Sewerage Department treatment plants often see white crust on showerheads and tub spouts within months of installation. Tub and shower installation projects require cartridges rated for hard water, and bathtub fixture replacement jobs frequently involve descaling valve bodies before installing new trim. Regular cartridge maintenance extends fixture life and prevents scalding incidents caused by sticky pressure-balance spools.
Detroit's older housing stock predates modern plumbing codes. Many homes lack the shutoff valves, proper venting, and pressure-balancing protection that current code requires. Ironwood Plumbing Detroit brings local expertise to every shower plumbing service call. We recognize the difference between a 1920s brass valve rough-in and a 1970s copper sweat connection. We know which supply line configurations meet current Michigan Residential Code and which require upgrades during remodels. This knowledge prevents costly mistakes and ensures that your shower and tub plumber delivers a repair or installation that passes inspection and protects your family from scalding and water damage.