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How Long Does a Well Pump Last?

A well pump lasts about 15 years, according to InterNACHI's home life-expectancy chart, and cost sites such as HomeGuide give 10 to 15 years. How often the pump starts matters more than its age: most wear happens when it stops and starts.

No government agency or university extension service we checked publishes a pump lifespan in years. The National Ground Water Association says only that submersible pumps can be very reliable, going years or even decades without service, and that pump systems usually need replacing before the well does.

The year ranges people quote come from home-inspection and cost sites. The table gives each with its source, along with the pressure tank, whose condition decides how hard the pump works.

Well pump lifespan by part and source

PartPublished lifespanSource
Well pump (any type)15 yearsInterNACHI life-expectancy chart
Well pump (any type)10 to 15 years with proper careHomeGuide
Submersible pump8 to 15 yearsAngi
Jet pump (above ground)8 to 10 yearsAngi
Pressure tankAbout 10 years; some have run properly for 30Nebraska Extension
Manufacturer warrantyPumps at least 1 year; pressure tanks at least 5Michigan EGLE, describing what manufacturers generally offer

HomeGuide and Angi are cost sites; their ranges are the ones our well pump replacement cost guide uses. No source we found gives a government or university figure by pump type.

What shortens a well pump's life?

  • Short cycling. The Water Systems Council says most wear and tear on a well pump occurs when it stops and starts, and that a larger pressure tank can prolong the pump's life by making it cycle less often.
  • A waterlogged or undersized pressure tank. PrivateWellClass.org, run by the Illinois State Water Survey and RCAP, says an undersized tank causes extra wear that shortens the pump's usable life, and that a waterlogged tank or leaking diaphragm causes the same problem.
  • Too many starts for the motor. Franklin Electric's 2026 submersible motor manual says excessive cycling can cause spline damage, bearing damage or motor overheating. Its limit is 300 starts per 24 hours for single-phase motors up to 0.75 HP and 100 for 1 to 5.5 HP, with a minimum run of one minute each time.
  • Sand and sediment. PrivateWellClass.org says abrasive water wears on the pump and piping.
  • Running dry. A submersible pump is cooled by the water around it, so if the water level drops below the pump the motor can overheat or be damaged (PrivateWellClass.org).
  • Lightning. Michigan's environment department lists a lightning strike next to normal wear as a reason a pump needs replacing. Franklin Electric says every submersible motor needs a dedicated surge arrestor.

Signs a well pump is failing

  • Less water or pressure than before, or pressure that drops and surges (National Ground Water Association).
  • The pump turns on and off rapidly. Minnesota's Well Owner's Handbook lists a waterlogged pressure tank as the cause.
  • The pump runs for only a few seconds and shuts off. Nebraska Extension says that means there is a problem with the system.
  • The pump runs continuously. Nebraska Extension says a check valve in the pump or riser pipe may be stuck open.
  • The pump runs when no water is being used. Michigan's environment department says to call a well driller.

Is it the pump or the pressure tank?

Check the tank first. Rapid on-and-off cycling points to a waterlogged tank, and a tank costs less to replace than a pump. Left alone, a bad tank wears the pump out, because every extra start is wear.

If the pump is past the age ranges above and the fix means pulling it out of the well, compare the repair quote with a replacement quote. Our repair-or-replace tool walks through that decision, and the replacement cost guide has current prices.

Frequently Asked Questions

How long does a submersible well pump last?

Angi gives 8 to 15 years for submersible pumps, and InterNACHI's chart gives 15 years for well pumps in general. The National Ground Water Association gives no number but says submersible pumps can go years or even decades without service.

How long does a well pressure tank last?

Nebraska Extension says a pressure tank will last about 10 years, although some have performed properly for 30. HomeGuide gives 10 to 15 years. Michigan's environment department says manufacturers generally warranty pressure tanks for at least five years.

What wears out a well pump fastest?

Starting and stopping. The Water Systems Council says most wear and tear on a well pump occurs when it stops and starts. A waterlogged or undersized pressure tank makes the pump cycle more often, which is why a failing tank shortens pump life.

Does a bigger pressure tank make a well pump last longer?

It can. The Water Systems Council says a larger tank can prolong the life of a well pump because the pump doesn't need to cycle as often. Franklin Electric's motor manual says to choose the pump, tank and controls so that starts per day are as low as possible.

Will a well pump outlast the well?

Usually not. The National Ground Water Association says pump systems typically have a shorter lifespan and may need replacement before the well itself.

Related guides and tools

General information, not a diagnosis of your system. Figures last checked against the sources below on 2026-11-12.

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