How to Fix Low Water Pressure

Low water pressure is one of the most frustrating plumbing issues homeowners face. Weak showers, slow-filling toilets, and faucets that barely produce a stream can make daily tasks difficult and time-consuming. Understanding what causes low water pressure is the first step toward fixing it.

Golding Plumbing diagnoses and resolves water pressure problems throughout Pickering and Durham Region. Here are the most common causes and what you can do about them.

Clogged or Corroded Pipes

In older Durham Region homes, galvanized steel pipes can corrode internally over decades, gradually narrowing the pipe opening and restricting water flow. Mineral deposits and scale buildup compound the problem.

If low pressure affects your entire home and it has older plumbing, pipe replacement or whole-house repiping may be the long-term solution. Golding Plumbing can assess your pipes and recommend the best approach.

Partially Closed Valves

Check that your main shutoff valve and water meter valve are fully open. Sometimes after plumbing repairs or meter readings, valves are left partially closed. Even a slightly closed valve can significantly reduce water pressure throughout your home.

This is one of the easiest fixes—simply ensure both valves are turned fully to the open position.

Faulty Pressure Regulator

Many homes have a pressure regulator (also called a pressure reducing valve) installed where the main water line enters the house. When this device fails, it can cause either very high or very low water pressure.

Replacing a pressure regulator requires a licensed plumber to ensure proper installation and pressure settings. Call (416) 669-8327 if you suspect a regulator issue.

Municipal Water Supply Issues

Sometimes low water pressure is caused by issues with your municipality's water supply. Construction, main breaks, or high demand periods can temporarily reduce pressure. Check with your neighbors to see if they're experiencing similar issues.

If the problem is municipal, it's usually temporary. But if your home consistently has lower pressure than neighbors, the issue may be in your service line. Golding Plumbing can test your water pressure and identify the source of the problem.

Fixture-Specific Low Pressure

If only one faucet or showerhead has low pressure, the issue is likely a clogged aerator or showerhead. Mineral deposits from hard water can block these small openings over time. Removing and cleaning or replacing the aerator often solves the problem.

If cleaning doesn't help, there may be a supply line issue serving that specific fixture. Our plumbers can diagnose and fix individual fixture pressure problems quickly.