How To Look At A House

McGarry and Madsen's home inspection blog for buyers of  

site-built, mobile/manfuactured and modular homes

What is the average life expectancy of a sewage grinder pump?

Wednesday, June 3, 2020

How long does a sewage grinder pump last?

You can expect a sewage grinder pump to last 6 to 16 years, with an average of 9 years. A grinder pump is installed along the drain line to a municipal sewer system or private septic tank when the pipe slope is not enough to flow by gravity. See our blog post What is a grinder pump? to learn more. Like any appliance, heavy usage—and specifically lots of on/off cycles of the pump motor—will shorten life expectancy. 

    Here’s a bar graph that compares the life expectancy of a grinder pump to other well and septic components.
    Go to our blog post What is the average lifespan of the parts of a house? for rating of other house components. To understand the basis, potential use, and limitations of lifespan ratings, see How accurate are the average life expectancy ratings of home components? Are they actually useful? 

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  To learn more about SEPTIC TANK SYSTEMS, see these other blog posts:

What are the building code requirements for gray water reuse in Florida?

What can I add to my septic tank to help it work better? 

Why do septic tank contractors want you to get rid of your kitchen disposal?

How can I tell if a house is connected to a septic tank system or sewer?

How can I locate my septic tank?

Does a septic tank have to be re-certified if a house has been vacant for a while?

Can a house have more than one septic tank? 

How often should I pump out the septic tank?

Should I call a plumber or septic tank contractor when my septic tank backs up into the house? 

Do I have to get a larger septic tank when I build a home addition?

• Where is the septic tank? Are you going to inspect it? 

• What is the difference between gray water and black water in the plumbing code? 

• Is it alright to disconnect the washing machine drain from the septic tank and divert it to the ground in the yard?

    Visit our SEPTIC TANK SYSTEMS page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.

NOTE: These life expectancies are based on data provided by InterNACHI, NAHB, FannieMae, and our own professional experience. Because of the numerous variables that can affect a lifespan, they should be used as rough guidelines only, and not relied upon as a warranty or guarantee of future performance.

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