Is Your Home Water Pressure Too Low? Here’s How to Fix It!
Low water pressure can be incredibly frustrating, whether it’s affecting a single faucet, your shower, or the entire house.
But don’t worry—this guide will help you:
✅ Determine if it’s a simple DIY fix
✅ Understand the possible causes of low water pressure
✅ Know when it’s time to call a professional
✅ Learn preventative maintenance tips to avoid future issues
Follow our step-by-step troubleshooting guide below or take our [Water Pressure Troubleshooter Quiz] to get quick, personalized recommendations.
Common Causes of Low Water Pressure
Why Has My Water Pressure Suddenly Dropped in the Whole House?
A sudden drop in water pressure can be alarming. Here are some common reasons why it may happen:
- 🏡 Municipal Water Supply Issues – Your city may be performing repairs, flushing hydrants, or dealing with a system-wide pressure drop.
- 🚰 Main Shutoff Valve Partially Closed – If your main water valve isn’t fully open, it could be restricting flow.
- 🏗️ Faulty Pressure Regulator (PRV) – A malfunctioning PRV can restrict water pressure throughout your home.
- 🔧 Clogged Pipes – Over time, mineral buildup, rust, or sediment can restrict flow in your plumbing system.
- 💦 Sediment Buildup in Water Heater or Fixtures – Hard water deposits can clog aerators, showerheads, and internal pipes.
- 🚿 Plumbing Leaks – Hidden leaks can cause a noticeable pressure drop. Check for damp areas or an unexpected increase in your water bill.
📌 Pro Tip: Use our [Water Pressure Troubleshooter Quiz] to quickly diagnose the issue.
DIY Fixes for Low Water Pressure
How to Fix Low Water Pressure Without Calling a Plumber
🔹 Step 1: Inspect Faucet Aerators & Showerheads
- Mineral buildup can clog aerators and restrict flow. Soak them in vinegar or replace them if needed.
🔹 Step 2: Check Your Main Shutoff Valve
- Ensure your valve (typically near your water meter) is fully open to allow maximum flow.
🔹 Step 3: Test Outdoor Spigots with a Pressure Gauge
- If your home’s PSI is below 40, it may indicate a problem requiring professional attention.
🔹 Step 4: Flush Your Water Heater
- Sediment accumulation can lower pressure. Drain and flush your water heater annually to maintain performance.
🔹 Step 5: Adjust the Pressure Regulator
- If your home has a PRV, turn the adjustment screw clockwise to increase pressure.
🚨 Not seeing improvement? Take our [Water Pressure Troubleshooter Quiz] or contact a professional.
Fixing Specific Low Water Pressure Issues
Low Water Pressure After a Main Line Replacement
- If pressure is lower than before, it could be due to debris, trapped air, or a partially closed valve.
✅ Solution:
- Fully open all valves & flush the system by running faucets for several minutes.
- Inspect the pressure regulator for issues.
- If the issue persists, a professional inspection is recommended.
Clogged Pipes Causing Low Water Pressure
- Older homes with galvanized steel pipes are prone to corrosion and buildup, which can restrict water flow.
✅ Solution:
- Try flushing your pipes with a high-pressure cleaner.
- If clogging is severe, repiping with PEX or copper might be necessary.
Increasing Water Pressure in Homes with Well Water
- Homes that rely on well water have different pressure challenges than those using city water.
✅ Solution:
- Adjust the well pressure switch (typically set at 40/60 PSI).
- Check the pressure tank—if waterlogged, it may need to be re-pressurized or replaced.
- Install a booster pump if additional pressure is required.
Low Water Pressure Upstairs but Fine Downstairs
- If your lower floors have good pressure but your upper floors don’t, the issue could be gravity-related.
✅ Solution:
- Install a pressure booster pump to maintain strong flow upstairs.
- Inspect showerheads & valves—some fixtures have built-in flow restrictors that can be adjusted.
- Flush pipes to remove sediment and buildup affecting upper-floor flow.
Best Shower Head for Homes with Low Water Pressure
- If your house has aging plumbing, choosing the right showerhead can make a significant difference.
🔹 Top Showerheads for Low Water Pressure:
- 🚿 Speakman S-2252 – Delivers strong pressure with adjustable spray patterns.
- 🚀 AquaDance 6-Function – Budget-friendly and effective.
- 💦 Wassa High-Pressure Showerhead – Compact yet powerful water flow.
📌 Pro Tip: If your home still has galvanized pipes, replacing them with PEX or copper can lead to a long-term water pressure improvement.
When to Call a Professional
If you’ve tried all the above steps and still have low water pressure, it might be time to bring in a professional.
✅ Your water pressure is consistently below 40 PSI at the main line
✅ You’ve experienced a noticeable drop in pressure after a main line replacement
✅ Your pipes are old and may be severely corroded
✅ Your PRV or well system adjustments don’t restore proper pressure