Why are my dishes coming out spotted?

Spots form when hard water droplets evaporate leaving a deposit. To prevent spotting, use hot water and a detergent with a higher level of phosphates (preferably 8.7% or higher), or use more of a low phosphate detergent. Always use a rinse aid and load glasses and plates so they have minimum contact with racks and pins. If water is very hard, it may be necessary to install a water softener.