Why does my well water look milky or cloudy?

Cloudy well water is most commonly caused by: dissolved air bubbles (harmless), suspended sediment particles, bacterial growth, methane gas, hard water minerals, or surface water contamination. The quickest test is to fill a glass and wait 5 minutes—if it clears from the bottom up, it's air bubbles; if it stays cloudy or clears from top down, it's particles.

Is cloudy well water safe to drink?

It depends on the cause. Cloudiness from air bubbles is completely harmless. However, cloudiness from bacteria, surface contamination, or certain particles can be unsafe. If cloudiness persists, doesn't clear when left standing, or is accompanied by odor or taste changes, have your water tested before drinking it.

How do I test if cloudy water is just air bubbles?

Fill a clear glass with the cloudy water and set it on the counter. Watch for 2-5 minutes. If the cloudiness is air bubbles, the water will clear from the bottom up as bubbles rise and escape. The glass should be completely clear within 5-10 minutes. If it stays cloudy or clears from the top down, the cause is something else.

Why is my well water suddenly cloudy when it wasn't before?

Sudden cloudiness often indicates a change in your well or water system: pump or check valve problems introducing air, dropping water levels, recent heavy rain causing surface water infiltration, well or casing damage, or changes in the aquifer. Sudden changes warrant inspection to rule out contamination.

Will a water filter fix cloudy well water?

Filtration can help with cloudiness from sediment or certain particles, but it won't fix air bubbles (which are harmless anyway) or bacterial contamination (which needs disinfection). The right solution depends on the cause. If cloudiness is from dissolved gases, an aeration system may help. For bacteria, chlorination or UV treatment is needed.