What to Do About Low Water Pressure: A Step-by-Step Guide
Struggling with weak showers or faucets that barely rinse? Low water pressure can be more than just an annoyance—it can disrupt your entire routine. Fortunately, there are several ways to diagnose and fix the issue, whether it’s a simple DIY task or something that needs a plumber’s help. Here’s how to get your water pressure back on track.
Step 1: Measure Your Water Pressure
Start by using a water pressure gauge to check your home's pressure. Ideal pressure falls between 45–80 PSI. Anything significantly below that? Time to investigate.
Step 2: Consider the Time of Day
If your pressure drops only during busy times (like mornings or evenings), the issue might be due to peak neighborhood usage. Try running water during off-peak hours to see if it improves.
Step 3: On a Well System?
If your home uses a well, check the pressure tank and switch settings. Sediment or debris in the pump may also be causing problems—have it cleaned or inspected if needed.
Step 4: Pinpoint the Problem Fixtures
Test each faucet individually. If only one or two have weak flow, and especially if hot water pressure is lower, the issue could be with the water heater—check for sediment buildup or a partially closed valve.
Step 5: Clean Showerheads & Faucets
Mineral deposits can clog fixtures. Soak aerators or showerheads in vinegar to dissolve buildup. For extra cleaning, use a toothbrush, then flush out the fixture before reattaching.
Step 6: Open Shut-Off Valves
Ensure all fixture-specific shut-off valves are fully open. Sometimes, they’re accidentally left partially closed during repairs or installations.
Step 7: Check Your Water Softener
A malfunctioning softener can reduce pressure. Try bypassing it—if the flow improves, the softener may need servicing or replacement.
Step 8: After Water Main Repairs
If there were recent repairs in your area, sediment may have entered your pipes. Remove aerators and flush your faucets to clear debris.
Step 9: Aging or Corroded Pipes
Older pipes—especially galvanized steel—can corrode and restrict flow. If this is the cause, replacing the pipes is the only long-term fix.
Step 10: Inspect Faucet Cartridges
If one faucet is struggling, the internal cartridge or stem might be clogged or worn out. Replacements are usually affordable and easy to install.
Step 11: Main Shut-Off Valve
Check that your home’s main water shut-off valve is fully open. If it’s partially closed, it could restrict water throughout the house.
Step 12: Pressure Reducing Valve (PRV)
If your home has a PRV installed (often near the water meter), it may be set too low. A plumber can adjust or replace it to restore proper pressure.
Step 13: Look for Leaks
Even small leaks—like running toilets or damp areas—can reduce pressure. Use a leak detection method or have a plumber inspect your lines.
Step 14: Ask Your Neighbors
If nearby homes are experiencing similar issues, the problem may be with the municipal supply. Contact your water provider to report it.
Step 15: Install a Booster Pump
If everything else checks out and your home just doesn’t get strong pressure, consider a booster pump. It increases water pressure and ensures consistent flow, especially in multi-story homes or during high-demand times.
Final Thoughts
Low water pressure can stem from a variety of sources—from simple clogs to aging pipes or system-wide issues. With this step-by-step guide, you can narrow down the cause and take the right action—whether it’s a DIY fix, a maintenance task, or time to call in a professional.