10 Causes of Low Water Pressure in Your House
Have you ever stepped into the shower expecting a refreshing spray, only to find yourself standing under a disappointing trickle? Low water pressure in your house disrupts everything from your morning routine to basic cleaning tasks. Whether you need a trusted plumber in Mountain View, CA, or want to troubleshoot the issue yourself, understanding the root causes helps you take the right action.
In this guide, Superior Plumbing will explain the most common causes of low water pressure in your house.
1. Partially Closed Main Shutoff Valve
Check that this critical valve, located near your water meter, is turned fully counterclockwise. Even a partial closure can dramatically reduce water flow throughout your home. These valve issues often provide the easiest fixes for homeowners.
2. Water Meter Valve Problems
Recent utility work, meter replacements, or service calls may have left the water company’s valve partially closed. This restricts flow before the water even enters your property.
3. Municipal Supply Issues
High demand periods during peak usage hours, scheduled system maintenance, or infrastructure problems can reduce neighborhood water pressure, affecting multiple homes simultaneously.
4. Pressure Regulator Malfunction
Your home’s pressure regulator controls water flow from the main water line into your plumbing system. When this component malfunctions, it can significantly reduce pressure throughout your house. You can test your pressure regulator by attaching a gauge to an outdoor spigot and comparing readings.
5. Clogged Pipes
Clogged pipes represent one of the most serious causes of low water pressure in your house. Mineral buildup, debris, or foreign objects can block water flow deep within your plumbing system, creating significant pressure restrictions.
6. Pipe Corrosion
Pipe corrosion also reduces water pressure as galvanized steel pipes deteriorate after just 20 years of service. This creates internal restrictions that limit the flow of water.
7. Water Leaks
Water leaks divert precious water away from your fixtures, leaving you with reduced pressure at every tap. Even small leaks can significantly impact your overall water pressure.
8. Dirty Aerators
Mineral deposits and sediment can clog the small holes in faucet aerators, reducing water flow at specific fixtures. Regular plumbing inspection helps identify these issues before they worsen.
9. Clogged Showerheads
Hard water buildup and debris can block showerhead openings, resulting in weak and uneven spray patterns that impact your daily routine.
10. Corroded Faucets
Internal corrosion within aging faucets can restrict water flow, requiring fixture replacement for optimal pressure restoration.
These 10 causes help explain why low water pressure occurs and when professional intervention becomes necessary. Complex issues, such as pipe corrosion and internal clogs, require expert diagnostics and repairs.
Superior Plumbing Solves Your Water Pressure Problems
When you experience low water pressure in your house, the causes range from simple valve problems to complex pipe leaks. At Superior Plumbing, we provide comprehensive plumbing services and annual inspections throughout the greater San Jose area, backed by years of experience and 24/7 emergency availability.
Don’t let low water pressure continue to disrupt your daily routine. Call Superior Plumbing at (408) 446-1760 for expert service.
