A water hardness level of 250 mg/L (or approximately 14.6 grains per gallon) indicates very hard water that requires immediate conditioning to protect your home's plumbing infrastructure. Water measuring above 180 mg/L is classified as very hard, meaning it will cause rapid limescale accumulation inside water heater tanks, chalky white crusts on plumbing fixtures, stiff laundry, and dry skin. If your water hardness reads 250, installing a properly sized residential ion-exchange water softener is highly recommended to extend appliance lifespans. Verification: Test your water with a digital meter or laboratory kit to confirm grain-per-gallon ratings.
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