The science of water spots (and how to avoid them)
Spots are usually minerals. Weather decides how quickly they get left behind.
Most water spots are mineral deposits (from hard water) left as rinse water evaporates. Hot panels and direct sun speed evaporation, increasing the chance of visible spotting.
Why weather matters
- Heat + sun: flash drying, faster deposits.
- Wind: can dry quickly (good) but also dries drips before you catch them (bad).
- Humidity: slows evaporation; reduces flash spots but can leave more streaky drips.
How to reduce spots
- Work in shade where possible.
- Rinse thoroughly and dry immediately.
- If you have very hard water, consider a final rinse with filtered/DI water (or dry faster and more thoroughly).
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