Dealing with well pump pressure too high can be frustrating, but it’s often a problem you can tackle yourself. High pressure can stress your pressure tank, potentially leading to leaks or even damage. The most common culprit behind this issue is often a malfunctioning pressure switch, which is responsible for regulating the pump’s operation. Understanding how your well pump system works, including the role of the pressure relief valve, is essential to diagnosing and resolving issues when your well pump pressure too high.

Image taken from the YouTube channel proclaimliberty2000 , from the video titled How To Adjust A Water Well Pressure Tank – Fast & Easy! .
Well Pump Pressure Too High? Quick Fix Guide!
Dealing with excessively high water pressure from your well pump can be frustrating and even damaging to your plumbing system. This guide will walk you through understanding why this happens and provide practical steps to troubleshoot and potentially fix the problem yourself. We’ll focus on getting your "well pump pressure too high" situation under control.
Understanding Well Pump Pressure
Before diving into fixes, it’s important to understand how your well pump system works.
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How Well Pumps Work: Well pumps draw water from your well and deliver it to your home. They operate within a set pressure range, typically between 40 and 60 PSI (pounds per square inch). A pressure switch monitors the pressure and tells the pump when to turn on and off.
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The Role of the Pressure Tank: The pressure tank acts as a buffer, storing water under pressure and allowing you to use water without the pump constantly cycling on and off. This extends the life of your pump.
Diagnosing High Well Pump Pressure
High water pressure manifests in several ways. Identifying the symptoms helps pinpoint the potential cause.
Symptoms of High Water Pressure
- Loud Banging Pipes (Water Hammer): When you quickly shut off a faucet, the abrupt stop of water flow creates a shockwave that travels through your pipes, causing them to bang. Excessive pressure amplifies this effect.
- Leaking Faucets and Toilets: High pressure forces water through worn seals and valves, leading to drips and leaks.
- Damaged Appliances: Appliances connected to your water line, like washing machines and dishwashers, are designed for a specific pressure range. Exceeding this range can damage internal components.
- Spitting Faucets: Air trapped in the system due to high pressure or other issues can cause faucets to sputter.
- Erratic Pressure Gauge Readings: The pressure gauge on your pressure tank provides a visual indication of your water pressure. Consistently reading above 60 PSI indicates a problem.
Checking Your Water Pressure
- Locate the Pressure Gauge: Find the pressure gauge, usually located near the pressure tank.
- Read the Gauge: Note the current pressure reading.
- Run Water: Turn on a faucet and observe the pressure gauge as the water runs. Does it stay consistently high?
Potential Causes of High Well Pump Pressure
Several factors can cause your "well pump pressure too high." Let’s explore the common culprits.
1. Faulty Pressure Switch
The pressure switch is responsible for regulating the pump’s operation.
- How it Fails: Over time, the pressure switch can become clogged, corroded, or simply malfunction, causing it to misread the pressure and allow the pump to run continuously or cycle rapidly, leading to high pressure.
- Testing the Pressure Switch:
- Turn off power to the pump at the breaker.
- Remove the cover of the pressure switch (usually a small, rectangular box).
- Visually inspect for corrosion or debris.
- Clean the switch with a small brush if necessary.
- Turn the power back on and observe the pump’s behavior. If the problem persists, the switch may need to be replaced.
2. Incorrect Pressure Switch Settings
The pressure switch has adjustable settings that determine the cut-in (pump starts) and cut-out (pump stops) pressure.
- How to Adjust (if possible): Some pressure switches have adjustable screws or nuts that allow you to fine-tune the pressure settings. Caution: Incorrect adjustments can damage your system. Consult the manufacturer’s instructions or a qualified professional before making any adjustments. Generally, you’ll want to reduce the cut-out pressure.
3. Saturated Pressure Tank
A pressure tank relies on an air cushion to maintain proper pressure. If the tank becomes waterlogged (saturated with water), it can lead to high pressure.
- How to Check the Air Charge:
- Turn off the pump at the breaker.
- Drain the water from the tank by opening a faucet.
- Use a tire pressure gauge to check the air pressure at the Schrader valve (similar to a tire valve, usually located on top of the tank).
- The air pressure should be 2 PSI below the cut-in pressure of your pump (typically around 38 PSI for a 40/60 switch).
- If there’s no air pressure or if water comes out of the Schrader valve, the tank bladder may be damaged and the tank may need to be replaced.
4. Blocked or Corroded Pipes
Restrictions in your plumbing system can cause pressure to build up.
- Checking for Blockages: Inspect pipes for visible signs of corrosion or mineral buildup.
- Flushing the System: Consider flushing your plumbing system to remove sediment and debris.
5. Well Pump Malfunction
In rare cases, the well pump itself might be malfunctioning, delivering water at an excessively high pressure.
- This is less likely but requires professional diagnosis and repair.
Troubleshooting Steps: A Quick Guide
Step | Description | Potential Solution |
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1 | Check the pressure gauge reading. | Note the reading to confirm high pressure. |
2 | Inspect the pressure switch. | Clean or replace if corroded or faulty. |
3 | Check the pressure tank air charge. | Add air if needed; replace tank if bladder is damaged. |
4 | Look for pipe blockages or corrosion. | Flush the system or replace damaged pipes. |
5 | Consult a professional. | If the problem persists, contact a qualified well pump technician. |
FAQ: Well Pump Pressure Problems
Here are some frequently asked questions to help you understand and troubleshoot high well pump pressure issues. We hope this helps you get your system running smoothly again!
What actually causes well pump pressure to be too high?
The most common cause is a faulty pressure switch. This switch is responsible for telling the pump when to turn on and off based on the water pressure in your system. If it’s malfunctioning, it might not shut the pump off at the correct pressure, causing the well pump pressure to climb too high.
How do I know if my pressure switch is the problem?
Observe your pressure gauge while the pump is running. If the pressure continues to rise well beyond the cut-off pressure setting and doesn’t stop until a safety relief valve triggers, or even exceeds the gauge’s maximum, the pressure switch is likely the culprit. This is a strong indication the switch isn’t functioning to regulate the well pump pressure.
Can a faulty pressure tank also cause high well pump pressure?
While a faulty pressure tank more commonly causes rapid cycling (the pump turning on and off frequently), in rare cases, a completely waterlogged tank can contribute to pressure issues. This is less direct than a bad pressure switch, but if the tank cannot store enough water to create a pressure buffer, the well pump pressure can become unstable.
Is it dangerous to have well pump pressure that’s too high?
Yes! Excessively high pressure can damage your plumbing fixtures, appliances, and even the well pump itself. Continuous high pressure puts strain on pipes and connections, potentially leading to leaks or bursts. Addressing high well pump pressure promptly is crucial to prevent costly repairs and ensure your safety.
Alright, you’ve got the lowdown on well pump pressure too high! Hopefully, this guide helped you get things back to normal. If you’re still scratching your head or feeling unsure, don’t hesitate to call in a pro. Stay safe out there!