The glass test
Fill a clear glass from the cold tap and set it on the counter.
- Clears from the bottom up in a minute or two: dissolved air. Common after utility work, in cooler water warming up, or with aerated faucets.
- Stays cloudy, or a layer settles at the bottom: particles such as sediment, minerals or rust.
- White film after it dries: dissolved minerals (hardness), which is a separate issue covered in white scale on faucets.
Repeat with hot water. Cloudiness only on the hot side can point to the water heater, such as sediment or minerals in the tank.
Common reasons on city water
- Air entering the lines after a main repair, hydrant flushing or a meter change.
- Pressure changes in the system.
- Sediment stirred up in older pipes.
- Recent plumbing work in your home. See water changes after plumbing work.
If cloudiness persists for more than a day on city water, call your utility. They track turbidity at the treatment plant, and your annual Water Quality Report (Consumer Confidence Report) shows those results. Utilities also issue notices if there is a problem that affects use of the water.
Common reasons on well water
Wells can turn cloudy after heavy rain, nearby construction, pump problems, or a drop in the water table. Fine sand or silt, iron or manganese particles, and gas can all cause it. The Florida Department of Health recommends testing a private well at least once a year and again whenever taste, odor or color changes, so a new cloudiness is itself a reason to test.
When to test, and what to test for
| Situation | Useful tests |
|---|---|
| Cloudy and does not clear | Turbidity or sediment check, iron, manganese, hardness |
| Cloudy plus orange or brown tint | Iron, manganese, pH |
| Cloudy plus odor | Hydrogen sulfide, bacteria (lab) on wells |
| Private well after flooding or work on the well | Total coliform and E. coli through a certified lab |
Jorge's free in-home test covers the everyday measures and explains when a certified lab is the right next step. See home screening vs lab analysis.
Treatment, if it turns out you need it
Air needs no treatment. Persistent particles are usually handled with sediment filtration sized for your flow; mineral-related cloudiness may call for softening; iron and manganese need their own approach. See sediment filtration options for wells.
A quick log helps
If cloudiness keeps coming back, keep a short log: date, time, hot or cold, which faucet, whether it cleared, and anything happening nearby such as road work or heavy rain. Bring that log to your utility or to your water test. Patterns, like cloudiness only on Monday mornings or only after storms, often point straight to the cause and save guesswork. Call, text or WhatsApp Jorge at (305) 793-5974 if you want a second look.
https://www.epa.gov/ccr/ccr-information-consumers
https://www.floridahealth.gov/community-environmental-public-health/environmental-public-health/water-quality/drinking-water/private-wells/
https://www.epa.gov/sdwa/secondary-drinking-water-standards-guidance-nuisance-chemicals
https://www.epa.gov/privatewells
Updated 2026-10-17 · Living Waters · Jorge Canela, Water Quality Specialist