Low water pressure can be frustrating, whether you’re struggling to rinse off in the shower, waiting forever to fill a pot, or dealing with a trickling faucet. If you’ve noticed a sudden drop in water pressure or ongoing weak flow, there are several possible causes. Some are easy to fix, while others may require professional plumbing repairs.
1. Clogged Pipes or Fixtures
Over time, mineral deposits, rust, or debris can build up inside pipes and fixtures, restricting water flow.
How to check:
- Unscrew the aerator on your faucet and clean out any buildup.
- If only one fixture has low pressure, the issue is likely within that fixture.
- If multiple fixtures are affected, the problem may be in your pipes.
Solution: Clean or replace clogged aerators and showerheads. If buildup is inside the pipes, professional pipe cleaning or repiping may be necessary.
2. Partially Closed or Faulty Valves
Your home’s water supply is controlled by several valves, and if one isn’t fully open, it can restrict water flow.
How to check:
- Locate the main shutoff valve (usually near your water meter or where the main water line enters your home).
- Ensure the valve is fully open.
- If you have a pressure-reducing valve (PRV), it may need to be adjusted or replaced.
Solution: Open any partially closed valves. If the PRV is faulty, a plumber can adjust or replace it.
3. Corroded or Aging Pipes
Older homes with galvanized steel pipes often experience corrosion over time, leading to restricted water flow.
How to check:
- If your home was built before the 1970s and still has galvanized pipes, they could be corroded inside.
- If water pressure has gradually decreased over time, this may be the cause.
Solution: Repiping with copper or PEX piping is often the best long-term fix.
4. Leaks in the Plumbing System
A hidden leak in your pipes can reduce water pressure and cause higher water bills.
How to check:
- Turn off all water inside your home and check your water meter. If it continues to move, there may be a leak.
- Look for damp spots on walls, ceilings, or floors.
- Listen for hissing sounds behind walls.
Solution: Small leaks can sometimes be repaired with sealant, but larger leaks require professional plumbing repairs.
5. Municipal Water Supply Issues
Sometimes, the problem isn’t inside your home—it’s with the city’s water supply.
How to check:
- Ask your neighbors if they’re experiencing the same issue.
- Check with your local water provider for service disruptions or maintenance work.
Solution: If the issue is on the city’s end, you may need to wait until it’s resolved. In some cases, installing a pressure booster pump can help.
6. Water Heater Issues (For Hot Water Pressure Problems)
If only your hot water pressure is low, the problem could be your water heater.
How to check:
- Sediment buildup in the water heater tank can restrict flow.
- A partially closed or faulty shutoff valve on the water heater may also be the culprit.
Solution: Flush your water heater annually to remove sediment buildup or replace a faulty shutoff valve.
When to Call a Plumber
If you’ve tried troubleshooting and still have low water pressure, it may be time to call in the pros. A licensed plumber can diagnose the issue, whether it’s a pipe blockage, leak, or water supply problem.
At Platinum Plumbing & Heating, we specialize in diagnosing and fixing low water pressure issues to restore strong, steady water flow in your home. Contact us today for expert service!
