Summary: Excel Floor Care in Gilbert, Arizona is alerting Phoenix Valley homeowners that monsoon dust combined with hard tap water minerals can create grout buildup that mimics permanent floor damage, potentially leading to costly and unnecessary tile replacement. The company offers professional tile and grout cleaning with a free test area so homeowners can see restoration results on their own floors before committing to any service or replacement decision. Takeaways: - Wet mopping during monsoon season can push fine dust particles into porous grout lines, where hard water minerals then bond with the grit and form a darkening mineral crust that worsens with repeated cleaning. - Phoenix tap water measures up to 276 milligrams per liter of dissolved minerals, well above the U.S. Geological Survey's threshold for very hard water, making every mop ses ...