Few things are more frustrating than a trickle of water from the shower or a kitchen tap that barely fills a pot. Low water pressure is a common complaint among Kamloops homeowners, and while the cause is sometimes simple, it can also point to deeper issues in your plumbing system that need professional attention.

Common Causes of Low Water Pressure

Partially Closed Shutoff Valves

Your home has a main shutoff valve — often near the water meter — as well as secondary valves at fixtures. If one was closed during repairs and not fully reopened, pressure throughout your home can drop noticeably. Check that all valves are fully open before looking further.

Mineral Buildup in Pipes

Kamloops water contains moderate levels of minerals that can accumulate inside older galvanized steel pipes over time, gradually restricting flow. If your home was built before the 1980s and still has original pipes, mineral buildup may be the culprit. In severe cases, repipe work with modern copper or PEX piping is the most effective long-term solution.

Clogged Aerators and Showerheads

If low pressure is limited to one fixture, a clogged aerator screen or showerhead nozzle is often to blame. Unscrew the aerator from your tap, soak it in white vinegar for 30 minutes, and rinse clean. This simple fix resolves the issue in many cases at no cost.

Pressure Reducing Valve (PRV) Issues

Most Kamloops homes have a pressure reducing valve where the city supply enters the house. PRVs are set between 45–80 psi and can wear out over time, either letting pressure drop too low or allowing it to climb too high. A licensed plumber can test your PRV and replace it if needed — it's a straightforward repair that makes a significant difference.

Pipe Leaks

A hidden leak somewhere in your supply lines will rob pressure from the rest of the system. Warning signs include unexplained spikes in your water bill, damp spots on walls or ceilings, or the sound of running water when all taps are off. Leaks should be addressed promptly to prevent structural damage and mold growth.

How to Check Your Home's Water Pressure

You can test your water pressure with an inexpensive gauge that screws onto an outdoor hose bib. Normal residential pressure is between 45 and 80 psi. Readings below 40 psi indicate a problem worth investigating; anything above 80 psi puts unnecessary stress on fixtures, appliances, and pipe joints.

When to Call a Professional

• Pressure is low throughout the entire home, not just one fixture
• Pressure fluctuates unpredictably throughout the day
• You suspect a hidden leak or corroded pipes
• Your PRV is more than 10 years old
• Neighbours on the same street have normal pressure (ruling out a City supply issue)

Pressure problems that affect the whole house almost always require a licensed plumber to diagnose accurately. Attempting to adjust a PRV or repair supply lines without proper training can make the situation worse and may void your home insurance coverage.

Advanced Plumbing Kamloops offers comprehensive water pressure diagnostics for Kamloops homeowners. Our licensed plumbers can identify the root cause quickly and restore proper pressure so your home's plumbing works the way it should. Contact us today to schedule a diagnosis.