How To Adjust Well Pump Pressure?


Having issues with your well pump pressure? Don’t worry, we’ve got you covered! Here, we will walk you through the process of adjusting well pump pressure like a pro. Whether it’s too high or too low, we’ll help you find the perfect balance.

Understanding Well Pump Pressure

Before diving into the adjustment process, let’s first understand what well pump pressure is all about. The well pump pressure refers to the force at which water is delivered from your well system to your faucets and appliances. It plays a crucial role in ensuring optimal performance and efficiency.

Why Adjusting Well Pump Pressure Matters

Adjusting well pump pressure can solve various issues such as fluctuating water flow, insufficient water supply, or even leaking pipes. By properly adjusting the pressure, you can ensure constant water supply without any disruptions. Additionally, it helps extend the lifespan of your well pump system by avoiding unnecessary strain.

Signs That Your Well Pump Pressure Needs Adjustment

It’s important to identify when your well pump pressure needs adjustment so that you can address it promptly. Here are some common signs to look out for:

  1. Fluctuating Water Flow: If you notice inconsistencies in water flow from your faucets or showers.
  2. Too High or Low Water Pressure: Excessive force or weak flow rate can both indicate imbalanced well pump pressure.
  3. Air Sputtering from Faucets: Air bubbles coming out along with the water may point towards an issue with pressure levels.
  4. Frequent Pipe Ruptures: Frequent pipe ruptures could be a result of excessive pressure buildup.

Once you have identified any of these signs, it’s time to roll up our sleeves and get down to business!

Steps to Adjust Well Pump Pressure

Now that we’re ready to adjust our well pump pressure, here’s a step-by-step guide to help you navigate through the process:

Step 1: Safety First

Before making any adjustments, ensure your safety by following these precautions:

  • Switch off the Power: Always cut off the power supply to the well pump system before working on it.
  • Relieve Pressure in System: Open faucets and drain water from the system to relieve pressure.

Step 2: Locate the Pressure Switch

In order to adjust the well pump pressure, we need to locate the pressure switch. This switch is usually found near or inside the well’s pressure tank. Refer to your owner’s manual or consult a professional if you’re unsure about its location.

Pro Tip: Make sure to handle all electrical equipment with care and only proceed if you are confident in doing so. If unsure, it’s best to seek professional assistance.

Step 3: Accessing the Pressure Controls

Once you have located the pressure switch, it’s time to access its controls. Follow these steps:

  1. Disconnect Power: Turn off power supply at breaker box or disconnect box.
  2. Remove Cover: Remove cover of pressure switch using appropriate tools.
  3. Identify Adjustment Screws: Inside the cover, you’ll find two screws – one for adjusting ‘cut-in’ pressure and another for ‘cut-out’ pressure.

Adjusting Cut-In Pressure

The ‘cut-in’ adjustment determines when your well pump starts delivering water after dropping below a certain threshold.

Step 4: Determining Desired Cut-In Pressure

To determine your desired cut-in pressure, consider factors like household water demand and plumbing requirements specific to your system. Most residential systems operate around 20-40 psi (pounds per square inch).

Fun Fact: PSI stands for pounds per square inch and measures how much force an area of one square inch can exert.

Step 5: Adjusting Cut-In Pressure

Using a flat-head screwdriver, turn the ‘cut-in’ screw clockwise to increase it or counterclockwise to decrease it. Make small adjustments at a time and test the water flow after each adjustment. Aim for the desired pressure range determined in step 4.

Quote: “Patience is key when adjusting the cut-in pressure. Small changes can bring significant improvement. ” – Anonymous

Adjusting Cut-Out Pressure

The ‘cut-out’ adjustment sets the upper limit of well pump pressure before it stops delivering water.

Step 6: Determining Desired Cut-Out Pressure

Similar to determining cut-in pressure, you need to consider factors like plumbing requirements and desired flow consistency when setting your cut-out pressure. Most residential systems operate around 40-60 psi.

Step 7: Adjusting Cut-Out Pressure

Using a flat-head screwdriver, turn the ‘cut-out’ screw clockwise to increase it or counterclockwise to decrease it. Again, make incremental adjustments and test water flow after each change until you achieve your desired pressure range from step 6.

Did You Know?: Well pumps are typically set up with some hysteresis (pressure difference between cut-in and cut-out) to prevent rapid cycling on/off as demand fluctuates.

Final Steps

Now that we’ve adjusted both our cut-in and cut-out pressures let’s wrap things up with some final steps:

Step 8: Reassemble Equipment

Carefully reattach any covers or removed components back onto your well pump system ensuring everything is securely tightened.

Step 9: Power Up & Test System

Turn on power supply at breaker box or reconnect power source safely. Run water from various faucets in your house and assess if the adjusted pressures suit your needs while ensuring there are no leaks present.

Adjusting well pump pressure may seem daunting initially, but with the right knowledge and precautions, it can be done smoothly. By following these steps, you are now equipped to handle any pressure issues that may arise in your well pump system. Remember, regular maintenance and monitoring will keep your well pump performing optimally for years to come.

Expert Tip: If you’re unsure about making adjustments or experience persistent issues, it’s best to consult a professional plumber who specializes in well pump systems.


  • Well Pump Pressure: The force at which water is delivered from your well system.
  • Fluctuating Water Flow: Inconsistent water flow from faucets or showers.
  • Cut-In Pressure: The lower threshold at which the well pump starts delivering water.
  • Cut-Out Pressure: The upper limit of well pump pressure before it stops delivering water.
  • Hysteresis: A pressure difference between cut-in and cut-out points in order to prevent rapid cycling of the well pump on/off as demand fluctuates.

FAQ: How To Adjust Well Pump Pressure?

Q: What is a well pump pressure?
A: Well pump pressure refers to the amount of force or pressure exerted by a well pump system to deliver water from a well.

Q: Why would I need to adjust my well pump pressure?
A: Adjusting the well pump pressure may be necessary in cases where the water flow is too weak or too strong, or when you experience fluctuations in water pressure while using your plumbing fixtures.

Q: What tools do I need to adjust my well pump pressure?
A: To adjust the well pump pressure, you may require basic tools such as a wrench, screwdriver, manometer (pressure gauge), and possibly an air compressor if your system uses a bladder tank.

Q: How can I decrease the water pressure from my well pump?
A: To reduce the water pressure from your well pump, locate the adjusting nut on your switch control box and turn it counterclockwise with a wrench. Consult your product manual for specific instructions pertaining to your system.

Q: How can I increase the water pressure from my well pump?
A: Increasing water pressure typically involves adjusting the cut-in and cut-out settings on your switch control box. Usually, turning clockwise increases both cut-in and cut-out pressures. However, refer to your product manual for detailed instructions pertaining to your specific system.

Q: Can I adjust my well pump’s pressure without professional help?
A: Yes, adjusting the well pump’s pressure can often be done without professional assistance if you have knowledge about switch control boxes and are comfortable working with them. However, it is always recommended to consult an expert if you’re unsure or uncomfortable performing such tasks yourself.

Q: Are there any risks associated with adjusting my own well pump’s pressure?
A; While adjusting the pressure is generally safe unless mishandled, there are some risks involved. Incorrect adjustments might damage your pump, plumbing fixtures, or result in water pressure that is too low to meet your household needs. It’s advised to follow the manufacturer’s guidelines and consult a professional if you have any doubts.

Q: How often should I adjust my well pump pressure?
A: In most cases, adjusting the well pump pressure may not be required frequently. However, if you notice significant changes in water pressure or experience problems with your system, it is worth checking and adjusting the pressure accordingly.

Q: Are there any alternatives to adjusting my well pump pressure?
A: Yes, in certain situations, alternative fixes might help resolve issues without directly adjusting the well pump pressure. For example, cleaning clogged filters/screens or replacing faulty pressure switches may restore proper water flow and eliminate the need for adjustment.

Remember that specific instructions may vary depending on your well pump system’s make and model. Please refer to your product manual or contact a professional for accurate guidance tailored to your setup.