Note: This podcast transcript has been edited for clarity and length.
Today’s episode is about troubleshooting low water pressure on well water for homes and small businesses.
Do you have plenty of water but experience low water pressure? This is a common problem.
I put together a Checklist and quick Troubleshooting guide called “How to Troubleshoot Low Water Pressure On Well Water.” This free guide includes pictures, checklists, and things to look for to troubleshoot low water pressure (see the link below to get your guide).
Discussed During This Episode
* What is the water pressure, and what is the difference between water pressure and flow rate?
* Determine your water pressure and the flow rate before any water treatment systems or plumbing.
* How to Troubleshoot common problems with low water pressure and flow rate.
* How to read a filter pressure drop chart and a pump curve chart.
* How to size whole house filters, automatic backwash filters, and softeners to avoid pressure drop problems.
* What is the water pressure, and what is the difference between water pressure and flow rate?
What is Water Pressure?
Water pressure refers to how strongly water flows through your pipes, measured in pounds per square inch (PSI). In well systems, pressure is typically maintained by a submersible pump and a pressure tank with an air bladder.
Most homes run best with 50–60 PSI. Too low, and you’ll get weak flow, especially in multi-bathroom homes. Too high (above 70 PSI), and you risk damaging appliances.
You can check your system's PSI using the pressure gauge near your pressure tank. Standard systems cycle between a lower and upper range (e.g., 30–50 PSI), while constant pressure systems aim to hold steady at one setting.
Knowing your PSI helps you troubleshoot low water flow and keep your system running smoothly.
What is Flow Rate?
Flow rate can be thought of as gallons per minute flowing through a pipe. A common residential well pump might deliver anywhere from 5 to 20 gallons in one minute. Pressure is not the same as flow, however.
For example, you could have great water pressure from the well but a terrible flow rate and reduced water pressure in the home.
Most pipes in traditional homes are ½”, ¾,” or 1” in diameter. Say you had really great water pressure of 60 or 70 PSI, and your home had all ½” piping, and you had 3 bathrooms all being used at the same time, or you had a large spa-type bathtub that likes to be filled at 15 gallons per minute.
Because you have ½” piping, you might experience a low flow rate, even if you have 70 PSI to start with, because the flow rate needed requires a larger diameter pipe.
How to Find Out You're Well Pumps Flow Rate
If you get a chance, listen to Episode 2, where I discuss how easy it is to find out your well pumping flow rate and what it is. I am putting a link in the show notes that goes to a page that shows how to check your well flow rate easily. Basically, the flow rate in gallons per minute is how many gallons can flow in one minute.
Link to
Flow Rate Calculator Page
Pumps are typically set to turn on automatically at one pressure and off at a higher pressure, usually 20 PSI higher than the low pressure.
Standard single-speed submersible wells or booster pumps operate with a pressure range that fluctuates between a low and high setting. Some homeowners use a constant-pressure system, which maintains steady water pressure throughout the home.
Standard systems use a pressure switch to turn on and off the well pump. If you measure the drawdown from your pressure tank in gallons and determi...