We are getting a lot of white build up on our dishes from our dishwasher that doesn't decrease with rinse aids. Our water source is well water, and I don't know if this very hard mineral-full water is to blame, but is there a way to remedy this? When we moved into our house last fall we replaced the dishwasher because the old one was full of these deposits, I don't want to have to buy another new dishwasher, any suggestions of cleaning and maintaining this one?



You might try running your dishwasher through a cycle with a cup of vinegar on the top rack of the dishwasher in the middle. Run it through a complete cycle to clean the dishwasher. Some other ideas to consider from Whirlpool


Spotting and filming on dishes

Is your water hard or is there a high mineral content in your water?

Conditioning the final rinse water with a liquid rinse aid helps eliminate spotting and filming. Keep the rinse aid dispenser filled.

Is the water temperature too low?

For best dishwashing results, water should be 120°F (49°C) as it enters the dishwasher. Refer to the "Dishwasher Efficiency Tips" section in your Use & Care Guide.

Did you use the correct amount of effective detergent?

Use recommended dishwasher detergents only. Refer to the "Detergent Dispenser" section in your Use & Care Guide. Never use less than 1 tb (15 g) per load. Detergent must be fresh to be effective. Store detergent in a cool, dry area. Heavy soil and/or hard water generally require extra detergent.

Is the home water pressure high enough for proper dishwasher filling?

Home water pressure should be 20 to 120 psi (138 to 828 kPa) for proper dishwasher fill. A booster pump on the water supply can be added if pressure is too low.

NOTE: To remove spots and film from dishes, try a white vinegar rinse. This procedure is intended for occasional use only. Vinegar is an acid and using it too often could damage your dishwasher. Back to top 1. Wash and rinse dishes. Use an air-dry or an energy-saving dry option.

Remove all silverware or metal items.

2. Put 2 cups (500 mL) white vinegar in a glass or dishwasher-safe measuring cup on the bottom rack.

3. Run the dishwasher through a complete washing cycle using an air-dry or an energy-saving dry option. Do not use detergent. Vinegar will mix with the wash water.

Silica film or etching (silica film is a milky, rainbow-coloured deposit; etching is a cloudy film) Sometimes there is a water/chemical reaction with certain types of glassware. This is usually caused by some combination of soft or softened water, alkaline washing solutions, insufficient rinsing, overloading the dishwasher, and the heat of drying. It might not be possible to prevent the problem, except by hand washing.

To slow this process, use a minimum amount of detergent but not less than 1 tb (15 g) per load. Use a liquid rinse aid and underload the dishwasher to allow thorough rinsing. Silica film and etching are permanent and cannot be removed. Do not use heated drying.


Posted on 1 Aug 2007

Marilyn Albertson
County Director, Family and Consumer Sciences Agent, Salt Lake County

Other Questions In This Topic