Low Water Pressure? Here’s What It Could Be and How to Fix It

Experiencing low water pressure can be incredibly frustrating, but it’s more than just an inconvenience. It often signals underlying plumbing issues that need immediate attention. Whether it’s your kitchen sink or bathroom shower, weak water flow can disrupt your routine and hint at hidden problems within your plumbing system. That slow trickle might seem minor, but it could lead to more significant problems, such as leaks, pipe corrosion, or costly water damage.

At Advanced Plumbing & Drains, we help homeowners uncover and fix these issues before they escalate. Here are some of the most common causes of low water pressure, along with steps you can take to address them.

Common Causes of Low Water Pressure

Clogged Pipes or Fixtures

If your faucets or showerheads produce only a weak stream, mineral deposits could be the cause. Over time, calcium, magnesium, and other debris from hard water can accumulate inside plumbing fixtures and along pipe walls. This buildup narrows the flow path, reducing water pressure throughout your home.

Fix: Start by removing faucet aerators and showerheads, then soak them in vinegar to dissolve mineral buildup. If the issue affects multiple fixtures, the clog may be deeper in the pipes. In that case, you may need a professional plumbing repair to clear or replace the affected sections. A water softener can also help prevent future buildup if hard water is a recurring problem.

Pipe Corrosion

Older homes with galvanized steel pipes are especially prone to internal rust and pipe corrosion. As the pipes age, the inner walls begin to break down, and rust flakes off into the water supply, restricting flow and lowering pressure. This type of deterioration happens gradually and often goes unnoticed until water pressure is significantly affected.

Fix: Corroded pipes usually need to be replaced. A licensed plumber can inspect your plumbing system and recommend switching to modern materials such as copper or PEX, which are more durable and resistant to pipe corrosion. Addressing the issue early can also help avoid contamination from rust particles.

Leaks in the Supply Line

Even small leaks in your main supply line can cause a noticeable drop in water pressure. These leaks reduce the volume of water reaching your fixtures and can also waste a significant amount of water over time. Leaks often occur underground or inside walls, making them difficult to detect without the right tools.

Fix: Watch for signs like damp areas, unexplained mould, or a sudden increase in your water bill. A professional plumber can perform a pressure test or use specialized equipment to locate the leak. Once identified, the damaged section of the supply line can be repaired or replaced to restore proper pressure.

Municipal Water Supply Issues

Sometimes, the source of the problem isn’t inside your home. The municipal water system may be experiencing maintenance, high demand, or even a break in a water main, all of which can temporarily lower water pressure.

Fix: Contact your local water provider to check for known issues or disruptions. If the problem is ongoing and beyond your control, consider having a plumber install a water pressure booster. This device helps maintain consistent pressure inside your home regardless of supply fluctuations.

Faulty Pressure Regulator

Some homes are equipped with a pressure regulator valve to maintain safe and steady water pressure. If the valve fails, it can cause pressure to drop across all fixtures. Older regulators or those subjected to inconsistent municipal pressure are more likely to malfunction.

Fix: A plumber can test the regulator using a pressure gauge to confirm if it’s working properly. If it’s faulty, replacing the valve is a simple but effective solution. During routine plumbing repair or inspections, it’s a good idea to have this valve checked to avoid unexpected pressure issues.

When to Call a Professional for Plumbing Repair

While cleaning a clogged fixture is something many homeowners can handle, diagnosing more complex issues, such as a failing supply line or extensive pipe corrosion, requires the expertise of a licensed plumber. If basic troubleshooting doesn’t resolve your low water pressure, don’t wait. Delaying professional help can lead to more significant plumbing problems, including structural damage or health risks associated with contaminated water.

Investing in a qualified plumber means your issue will be diagnosed accurately and fixed efficiently the first time. Professionals have the right tools and experience to detect hidden problems, offer long-term solutions, and ensure your plumbing system meets current standards. This can ultimately save you time, money, and stress.

Quality Water Pressure Repair Services in Toronto

At Advanced Plumbing & Drains, we provide reliable and thorough plumbing repair services for homeowners in Toronto and throughout the GTA. Whether you’re dealing with low water pressure, aging pipes, or hidden supply line leaks, our team is equipped to identify and fix the issue efficiently.

With decades of experience, we have tackled every type of water pressure problem. We use advanced diagnostic tools, high-quality materials, and a customer-focused approach to ensure long-lasting results. Whether it’s a minor adjustment or a full system upgrade, we’ll get your plumbing working properly.

To learn more about our water pressure repair services, reach out to Advanced Plumbing & Drains today at 866-863-9539, email us at info@advancedplumbing.ca or click here to get in touch online.

Frequently Asked Questions About Low Water Pressure

Can water pressure affect my appliances?
Yes. Poor water pressure can reduce the performance of dishwashers, washing machines, water heaters, and other appliances that rely on a steady flow.

Is low water pressure dangerous?
Not directly, but it can indicate serious plumbing issues, such as supply line leaks or pipe corrosion, which may lead to property damage or health risks if left unaddressed.

How do I test my water pressure at home?
Attach a pressure gauge to an outdoor faucet. A normal reading should fall between 40 and 60 psi. If it’s lower, you may have a plumbing issue that needs attention.

Can the weather affect my water pressure?
Yes. In winter, extreme cold can cause pipes to contract or freeze, resulting in reduced or even stopped water flow.

Should I install a water pressure booster?
If your home consistently has low water pressure and the issue isn’t due to internal plumbing, a booster pump may help. Consult with a plumber first to determine if it’s the right solution for your home.