Low water pressure is one of those things you don’t think much about—until your shower starts trickling or the kitchen sink won’t rinse a plate. If you’re dealing with weak flow, here are some things you can check before calling a plumber. Some fixes are quick. Others might need a little help.
1. Make Sure the Main Valve is All the Way Open
Sometimes, after repairs—or even just by accident—the shut-off valve near where the water enters your home doesn’t get turned all the way back on. If it’s only halfway open, you’ll get reduced pressure everywhere.
2. Try Cleaning Your Fixtures
Minerals can build up inside faucet aerators or showerheads, especially in areas with hard water. It’s easy to miss, but it can really cut your flow. Unscrew the aerator or showerhead, soak it in vinegar, and rinse it out. If it’s too far gone, just replace it.
3. Check for Leaks
Even a small leak can mess with water pressure. Look under sinks, around your water heater, and near exposed pipes. If you’re still seeing low pressure and no visible leaks, there could be something going on behind the walls—or underground.
4. See If You’ve Got a Pressure Regulator
Not every home has one, but if yours does and it’s acting up, it might be lowering your pressure across the board. These devices can go bad over time. If pressure’s been off in the whole house, that might be why.
5. Look Into Your Piping
Older homes with galvanized pipes or buildup in the lines can develop internal clogs. It usually doesn’t happen overnight—more of a slow change over time. But eventually, it restricts flow enough that you’ll notice.
6. If It’s Just the Hot Water, Check the Heater
Low pressure only on the hot side? The water heater could be the issue. Sediment in the tank or a clog at the outlet can restrict flow. A flush might help. Or if it’s old, you might need a replacement.
When to Bring in a Plumber
If you’ve tried all the obvious stuff and still have low pressure, it’s worth calling someone in. Plumbers can test the pressure, check for hidden leaks, and see what’s going on inside the lines without guessing.
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