Chalky white crust on faucets, showerheads, and appliances is limescale from hard water. Hard water contains dissolved calcium and magnesium that leave mineral deposits behind. Testing your water hardness is the first step to understanding your conditions and choosing the right solution.
Hard water is water that contains dissolved minerals — primarily calcium and magnesium. When hard water evaporates or is heated, those minerals are left behind as a chalky, white or off-white deposit called limescale or scale buildup. Hard water is common across Fresno and the Central Valley and is one of the most frequent reasons homeowners test their water.
This problem can have more than one possible cause — from the water supply to household plumbing to a water heater. Identifying the cause is the right first step, because the solution depends on what is actually happening.
Hard water is not a health hazard — the minerals it contains are common dietary minerals. The concern with hard water is practical: scale buildup damages fixtures and appliances, shortens the life of water heaters, makes cleaning harder, and leaves spots on glassware. Testing your water hardness tells you the level so you can decide whether treatment is worth it for your home.
Not every water problem is solved the same way. The right option depends on what testing finds in your water. Here are solutions that may apply — a water test tells you which one actually fits your conditions.
A water softener uses ion exchange to reduce hardness minerals, preventing scale buildup throughout the home and protecting fixtures, appliances, and water heaters.
Learn moreA salt-free conditioner alters the way hardness minerals behave so they are less likely to form scale — an option for homeowners who want reduced maintenance without added salt.
Learn morePairs with softening or conditioning to reduce sediment and chlorine alongside hardness, so every tap gets cleaner, better-handling water.
Learn moreA water softener reduces hardness minerals (primarily calcium and magnesium) through an ion-exchange process. Softening addresses the effects of hard water — scale buildup, spots on fixtures, and reduced soap effectiveness — rather than taste or dissolved contaminants.
Learn moreSalt-free conditioning systems alter the way hardness minerals behave so they are less likely to form scale — without using salt or sodium. They are a lower-maintenance option for homeowners who want scale protection without the ion-exchange softening process.
Learn moreA whole house water filtration system treats water at the point where it enters your home, so every faucet, shower, and appliance receives filtered water. It is designed to reduce sediment, chlorine taste and odor, and other common contaminants depending on the media used.
Learn moreEvery home's water is different. Generation H2O can help you understand your water conditions and explore solutions based on your test results — with no obligation.
Free test • No obligation • Tested at your tap
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