A typical Delta faucet cartridge has an expected operational lifespan ranging between five and ten years under normal residential usage conditions before hard water mineral scaling, rubber O-ring fatigue, or internal seal wear causes stiffness or a dripping leak. In households supplied with hard water containing high concentrations of calcium and magnesium, mineral deposits accumulate much faster inside the valve body, shortening the cartridge's functional lifespan. Swapping an aging cartridge quickly restores factory-new performance.
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