Short answer: Cloudy water that clears from the bottom up in a minute or two is almost always air, and it is usually harmless. Water that stays cloudy, or leaves sand or silt at the bottom of the glass, is carrying solids, and that points to the well, the pump or the pressure tank.
- Who this is for: homes on a private well, which is most of the North Georgia mountains.
- Can wait: milky water that clears fast, with normal pressure and no change after rain.
- Act today: sand or grit, water that stays cloudy, or cloudy water after heavy rain. Stop drinking it until you know why.
- Call or text Ryan if: sand keeps coming back, the pump seems to be working harder, or you want the system checked.
The Glass Test: Air or Solids?
Fill a clear glass from the kitchen tap and set it on the counter. Watch it for a couple of minutes. What you see sorts most cases right away.
- It clears from the bottom up. Tiny air bubbles are rising out of the water. That is air in the lines. It looks alarming and it is not a dirt problem.
- It stays cloudy, or looks tan or gray. Something is suspended in the water. That could be fine silt or clay from the well, or minerals.
- Grit settles on the bottom. That is sediment or sand. The water is carrying real solids, and solids wear things out.
Do the glass test from a cold tap, then again from a hot tap. If only the hot side is cloudy or gritty, the water heater may be the source. That is a different problem, and brown or discolored water from the tap covers how to tell them apart.
Milky Water That Clears: Air in the Lines
Air gets into a well system a few ways. The pressure tank may have lost its charge, so the pump is pushing air along with water. The pump may be pulling air because the water level in the well dropped. Or someone just had work done on the plumbing, and air is working its way out of the pipes.
If the air clears in a day or two after plumbing work, you can leave it alone. If it keeps happening, or the faucets also cough and spit, read air spitting from the faucet. If the pump kicks on and off every few seconds on top of it, read well pump short cycling.
Not sure if it is air or sand?
Text Ryan a photo of the glass. He is a licensed Master Plumber and answers his own phone, day or night.
Cloudy or Sandy Water: What Is Coming Out of the Well
When the water carries solids, there are three common reasons on a mountain well.
Sediment in the water the well draws. Wells in rock country pull from cracks and pockets, and fine silt can come with the water, especially after a lot of rain or a dry spell that lowers the water level. Heavy rain can also be a sign that surface water is finding its way into the well. That is the case where you stop drinking the water and get it tested (more on that below).
Iron and manganese. The EPA lists both as common nuisance minerals. Iron can make water look rusty or leave sediment and orange stains. Manganese can make it look brown or black. The EPA treats these as taste, color and staining concerns, not health-based limits. If your water is more orange than cloudy, start with orange stains in the sink.
A worn pump or a damaged well screen or casing. If the water was clear for years and suddenly runs sandy, something changed in the well. A pump that is wearing out, or a pump sitting too close to the bottom of the well, can stir up sand and pull it into the house. Sand that keeps coming is hard on faucets, valves and the pump itself. That is the sign to have the system looked at rather than waiting.
When to Test the Water
A cloudy glass tells you what you are seeing. It does not tell you what is in the water. A private well is the owner's responsibility, so testing is on you, and the right time is after a change like cloudy water after heavy rain, a flood, or work on the well.
The UGA Cooperative Extension guidance on shock chlorination lists muddy or cloudy water after rain as one reason to consider disinfecting a well, and says to retest for total coliform and E. coli afterward. Your county UGA Extension office is the place to ask about getting water tested. Our guide to well water testing in Georgia goes further.
Ryan is a plumber, not a water lab. He does not sell water tests. What he does is the equipment side: the pump, the pressure tank, and filtration or softening once you know what is in the water.
What Fixes It, Depending on the Cause
- Air from a low tank charge: the well pressure tank is checked and recharged or replaced. Ryan installs well bladder (pressure) tanks.
- Silt or fine sediment: a whole-home sediment filter catches it before it reaches the taps and fixtures. Ryan installs whole-home filtration.
- Iron or manganese: treatment is matched to what the test shows. A water softener or a filter may be part of it. See water filtration vs. water softener to compare.
- Sand from the pump or well: the pump is checked first. If the pump is worn, it is replaced. Ryan installs well pumps.
A filter is a good way to protect the house, but it is not a fix for a well that is failing. If sand keeps getting through, the filter will clog fast and the cause still needs to be found.
What to Do Today
- Run a cold tap outside, such as a hose bib, for a few minutes. See whether it clears.
- Save a clear glass of the water on the counter so you can show Ryan, or photograph it next to a clear glass of tap water from a neighbor or a store bottle for comparison.
- Do not run the washing machine or the dishwasher while the water is gritty. Sand in a fill valve causes trouble.
- Do not drink it if it stayed cloudy after rain, or if you are not sure. Use bottled water until you know more.
- Check the faucet aerators. If a bit of grit collects there, rinse them and note how fast it comes back.
Text Ryan the photo, how long it has been happening, and whether it follows rain. That is usually enough to tell you what kind of problem it is.