Homeowner Guide
Low water pressure can affect a single faucet, one bathroom, or an entire home. This guide explains common causes, simple homeowner checks, and situations that may require professional plumbing service.
☎ Call (866) 227-6805Does the problem affect one fixture, several fixtures, or the entire house? That answer often narrows the list of possible causes.
Often caused by a clogged aerator, worn cartridge, or partially closed shutoff valve.
May involve branch plumbing, a fixture valve, or localized mineral buildup.
Could involve the pressure regulator, main shutoff valve, service line, or water utility.
A supply-line leak can reduce pressure while increasing water usage.
A failing regulator can cause pressure that is consistently too low.
Hard-water deposits may restrict flow through fixtures and pipes.
Main or fixture shutoff valves that are not fully open can restrict flow.
Utility maintenance or water-main repairs can temporarily reduce pressure.
Corrosion or internal pipe buildup can reduce available flow over time.
| Check | What to Look For |
|---|---|
| Compare Fixtures | Determine whether the issue affects one fixture or the entire home. |
| Clean Aerators | Remove debris or mineral buildup from faucet screens. |
| Inspect Shutoff Valves | Confirm valves beneath sinks and toilets are fully open. |
| Review Water Meter | Unexpected meter movement may indicate a hidden leak. |
| Ask Neighbors | If nearby homes have the same issue, the water utility may be involved. |
Yes. A supply-line leak can reduce the amount of water reaching fixtures.
Yes. Mineral deposits can restrict flow inside aerators, showerheads, valves, and older pipes.
Consider calling if pressure drops suddenly, affects the whole house, is accompanied by unexplained water use, or you suspect a concealed leak.
Describe which fixtures are affected and whether the change happened suddenly or gradually.