Water Pressure Repair in Lawrenceville

Common Causes of Water Pressure Problems in Lawrenceville Homes

Pressure issues have distinct causes, and the right fix depends entirely on which one applies to your system. Before recommending any repair, we identify what’s actually driving the problem.

Pressure-Reducing Valve Failure

A pressure-reducing valve (PRV) steps down the incoming municipal supply to a safe level for household use. When it fails, pressure can read too low, too high, or swing inconsistently between fixtures. Gwinnett County Department of Water Resources confirms that pressure issues on the customer’s side of the meter, including PRV repair and replacement, are the homeowner’s responsibility. If your pressure problems are house-wide and unrelated to a recent service interruption, the PRV is a logical first stop.

Corroded or Scaled Pipes

Galvanized pipes accumulate mineral scale on the interior over time, gradually reducing flow volume even when incoming pressure reads normal. The restriction builds slowly until pressure at fixtures drops noticeably. Homes with galvanized lines that have reached this stage may need whole-house repiping to restore full flow rather than a patch on one section.

Partially Closed Shutoff Valve

A main shutoff valve turned back only partially after a repair reduces flow to the entire home. It’s one of the most common and most overlooked causes of sudden house-wide low pressure.

Hidden Water Line Leak

A leak between the meter and the home bleeds pressure before water reaches any fixture. These leaks often go undetected until a bill spike or a wet area in the yard appears. Our leak detection process locates the source without unnecessary excavation.

Localized Fixture Buildup

Mineral deposits in faucet aerators or showerheads cause low pressure at a single fixture while the rest of the home reads normal. This is usually a straightforward cleaning or fixture replacement, not a system-wide issue.

High Pressure Above 80 PSI

Water pressure consistently above 80 PSI accelerates wear on pipe joints, fixtures, and appliances and often produces water hammer, the banging noise when a valve closes quickly. A PRV adjustment or replacement can bring pressure into the recommended range and reduce ongoing wear.

How We Diagnose & Repair Water Pressure Issues

The first step is determining whether low pressure is house-wide or isolated to a single fixture. House-wide pressure loss points toward the main shutoff valve, PRV, or a supply line problem. Single-fixture pressure loss usually traces to a clogged aerator or showerhead. Comparing hot-water-only pressure against cold-water pressure helps us determine whether the water heater is contributing to the problem.

Our technicians assess the entire plumbing system during the service call, not only the presenting symptom. A pressure diagnosis may surface a corroded shutoff valve or an aging PRV approaching failure, which we’ll flag so you can plan ahead. We explain what we find in plain terms, walk through your options, and don’t recommend work you don’t need.

Common water pressure repairs we handle in Lawrenceville and across Gwinnett County:

• PRV adjustment and replacement
• Main valve inspection
• Leak detection and water line repair
• Aerator and fixture cleaning
• Polybutylene or galvanized pipe replacement for homes where aging infrastructure is the root cause of chronic pressure loss

When repiping is the right answer, we handle it directly. You’re not coordinating with a separate contractor.