Why Is My Well Pump Sparking?

Ruan Marinho • Jul 26, 2021

A sparking well pump is a common enough occurrence, but it is still a cause for concern. A well pump spark indicates a faulty pressure switch. The pressure switch has mechanical and electrical components, and a defect in these components can lead the switch to spark when the pump cycles on.

Why Should I Replace the Pressure Switch?

If you see sparks when your well pump turns on, you will need to replace the pressure switch before damage is done to other components of your well pump. A sparking pressure switch can damage any or all of the following:

  • Check Valve
  • Motor
  • Capacitor
  • Start Switch

Electrical damage to any of these well pump components can result in a more costly repair, so timely replacement of the pressure switch is the best course of action.

Frequently Asked Questions

Many well water pump owners want to learn more about well pump sparks. Here you will find the answers to the most common questions:


What causes pressure switch failure?

The most common cause of electrical failure in well pump pressure switches is the degradation of the electrical contacts that signal the pump to cycle on or off.


When should I replace the faulty pressure switch?

Replacing a damaged or defective pressure switch as soon as possible can prevent other costly component repairs or the need for a complete pump replacement.


What can I do if the sparking pressure switch causes other damage to my pump?

Depending on the extent of the damage, you may need to replace additional components or replace the well pump altogether. 

Why Choose Mosman Well Works?

The friendly and knowledgeable technicians at Mosman Well Works can quickly diagnose well pump issues, such as a faulty pressure switch. We have the skill and the expertise to identify the cause of the failure, replace the damaged components, or complete a pump replacement if necessary. 



At Mosman Well Works, we understand the intricacies of well water systems and their components. If you need well pump repairs or replacement services in the Woodbury area, Mosman Well Works has skilled technicians ready to help. Call or click today to learn more!

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