Low water pressure is frustrating, and the cause can range from something simple to something that needs a professional diagnosis.
Fixture-Level Causes
If low pressure is limited to a single faucet or showerhead, a clogged aerator or showerhead is often the culprit and is sometimes something you can check yourself.
Whole-House Causes
When every fixture in the house is affected, the cause is more likely related to the main water line, a failing pressure regulator, or, less commonly, a municipal supply issue. See our water line page for more detail.
Pipe Corrosion
In older homes, corrosion buildup inside galvanized pipes can gradually narrow the interior of the pipe and reduce flow over time. Our pipe repair page covers this in more detail.
When to Have It Checked
If pressure has dropped noticeably and isn't explained by a simple fixture issue, it's generally worth having a professional check the system rather than assuming it will resolve on its own.