Cloudy Glasses From the Dishwasher: Hard Water or Etching?

A white film usually wipes off (hard water); permanent cloudiness (etching) does not. The fix depends on which you have.

By Marcus ElleryDecember 6, 20253 min read read

Written by Wade Holbrook, Lead Technician — True Fix Dallas. Factory-trained, EPA-certified, 9 years servicing Dallas–Fort Worth.

There are two very different causes of cloudy glassware, and the test is simple.

Test Which One It Is

Soak a cloudy glass in white vinegar for five minutes.

Fix: If the film clears, it is hard-water deposits; if it stays, it is permanent etching.

Minerals in Dallas water leave a chalky residue.

Fix: Add a rinse aid, use a water-softening additive, and avoid over-dosing detergent.

Etching is caused by too much detergent, very soft water, and high heat together.

Fix: Reduce detergent, skip pre-rinsing, and use a gentler cycle for glassware.

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