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Air in your well water lines

Sputtering faucets mean air is getting into the water line. The usual causes are a water level that has dropped near the pump, a leak in the drop pipe or suction line, or a torn bladder in the pressure tank. If it happens after heavy use and clears after a rest, the well may be running low.

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Step 1 of 3

What kind of pump do you have?

When does it sputter?

  • After laundry, showers or watering: the water level is likely dropping near the pump.
  • Every time a tap opens: suspect a leak in the drop pipe or suction line.
  • Right after the pump starts: suspect the tank bladder.

Check the pressure tank

Turn the pump off and drain the tank. Press the air valve on top for a moment. Water out of the air valve means the bladder is torn, and the tank needs replacing.

Milky water is usually air

Fill a clear glass. If the cloudiness clears from the bottom up within a minute, it is air. If it settles as grit or stays cloudy, read our cloudy well water guide.

Questions

Is air in my well water dangerous?

Air itself is not harmful, but it can mean the water level is low or a pipe is leaking. A pump that pulls air can overheat.

Why do my faucets sputter only in the evening?

Heavy use during the day can pull the water level down near the pump. If a rest fixes it, the well may be low-yield or running dry in a dry spell.

Can a pressure tank cause air in the lines?

Yes. A torn bladder lets the tank's air charge escape into the water lines.

Next step

Sources