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Todd, Plumber
Category: Plumbing
Satisfied Customers: 368
Experience:  Union Plumber 28 years of service work, and new homes.
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I have water hammer most times the well pump starts up. It

Customer Question

I have water hammer most times the well pump starts up. It definitely seems to be at pump start up and not related to any valve shutoff issues. I just replaced the pressure tank which had a bad bladder and caused frequent pump starts. I readjusted the pressure switch to be within 2 psi of the tank pressure. Still having water hammer issue!
Any suggestions on cause?

Submitted: 7 years ago.
Category: Plumbing
Expert:  Todd replied 7 years ago.
Shut off the water to the toilet or toilets and see if this stop the hammering. Bad fill valve in toilets can cause hammering on well systems.
Expert:  Todd replied 7 years ago.
Did this work or not ?
Customer: replied 7 years ago.

This didn't work. I went thru a process to get air out of lines and this seems to ahve fixed problem.

Expert:  Todd replied 7 years ago.
I glad you got it, 70% of the time a toilet fill valve cause this to happen, but air in the line also will do it.