If you’ve tested your home’s water pressure and found it’s too high or too low, you might be wondering: Can I fix this myself?
The reality is—while checking your water pressure is simple, fixing it correctly usually requires a licensed plumber. Water pressure issues often involve your home’s main water line, specialized valves, or system-wide problems that aren’t DIY-friendly.
Here’s what you need to know.
When Water Pressure Is Too High
High water pressure might feel great in the shower—but it can silently damage your plumbing system.
Over time, excessive pressure can:
- Wear out pipe joints and fittings
- Cause leaks inside walls
- Shorten the lifespan of appliances like water heaters, dishwashers, and washing machines
The Real Fix: Pressure Reducing Valve (PRV)
If your pressure is above safe levels (typically over 80 PSI), your home may need a Pressure Reducing Valve (PRV) installed or adjusted.
A PRV is installed on your main water line and regulates the pressure entering your home.
Why this isn’t DIY:
- It involves working directly on your main water supply
- Incorrect installation can lead to leaks or total water shutoff issues
- Adjustments require precision to avoid damaging your system
In many cases, PRVs also fail over time and need replacement—not just adjustment.
When Water Pressure Is Too Low
Low water pressure can be frustrating, but the cause isn’t always obvious.
Common causes include:
- A partially closed main shutoff valve
- Mineral buildup or corrosion in pipes
- A failing PRV
- Issues with the municipal water supply
- Distance or elevation from the water source
The Real Fix Depends on the Cause
Unlike high pressure, low pressure isn’t a one-size-fix situation.
A plumber may need to:
- Inspect your main line for blockages or restrictions
- Test pressure at multiple points in your home
- Diagnose whether your PRV is failing
- Recommend and install a water booster pump if your home simply isn’t getting enough incoming pressure
Why this isn’t DIY:
- Requires specialized tools to properly diagnose the issue
- Misdiagnosing the problem can waste time and money
- Installing a booster pump or replacing a PRV involves cutting into your plumbing system
Why Professional Diagnosis Matters
Water pressure issues aren’t always what they seem. What looks like a simple fix could actually be a symptom of a larger problem.
A licensed plumber can:
- Accurately diagnose the root cause
- Prevent unnecessary repairs or replacements
- Ensure your system is safe and up to code
- Protect your home from long-term damage
The Bottom Line
Checking your water pressure is a great first step—but fixing it is a different story.
Whether your pressure is too high or too low, the safest and most effective solution is to have a professional evaluate your system.
Need Help With Your Water Pressure?
If your home’s water pressure doesn’t feel right, don’t wait for hidden damage to show up.
A quick professional inspection can save you from costly repairs and give you peace of mind knowing your plumbing system is operating safely.