What Causes Low Water Pressure?

Few things are more frustrating than stepping into a shower only to be met with a weak, trickling stream of water. Low water pressure can happen suddenly or gradually over time. Here are the most common reasons your home is experiencing poor water flow.

1. A Failing Pressure Reducing Valve (PRV)

If the low pressure is affecting your entire house suddenly, the culprit is often your Pressure Reducing Valve. The PRV is a bell-shaped device installed on your main water line. Its job is to reduce the highly pressurized municipal water down to a safe level for your home's pipes. When a PRV fails, it often drops the pressure dramatically.

2. Hard Water and Mineral Buildup

If you have an older home with galvanized steel pipes, or if you live in an area with hard water, minerals like calcium can build up inside your pipes over time. This scale acts like clogged arteries, restricting the diameter of the pipe and severely reducing water flow to your fixtures.

3. A Hidden Leak

If a significant amount of water is escaping through a cracked pipe in your crawlspace or under your slab, less water is making it to your faucets. If your low pressure is accompanied by a spike in your water bill, a hidden leak is highly likely.

4. Clogged Aerators

If the low pressure is isolated to just one sink or showerhead, the issue is likely a clogged aerator. The small screen at the end of the faucet can easily become blocked by small pieces of sediment or hard water scale. Simply unscrewing the aerator and soaking it in vinegar can often fix the issue.

If you're tired of dealing with weak water pressure, contact Pipedex Plumbing & Drains at 864-900-0300. Our licensed technicians will diagnose the root cause and provide a flat-rate quote to restore your home's comfort.