A Plumber’s Guide to Water Leak Detection
Research shows a 1.5 mm hole in a water pipe can waste an average of 100,000 liters monthly. Even a minor leak can cost you thousands of dollars in home repairs. Proactive leak detection can protect your home against water damage for the years ahead. To help guide you, our plumbers offer their insights derived from decades of leak detection and repair throughout Victoria.
The Common Signs of Leaks
Visual Leak Indicators
Water stains on walls, ceilings, or floors
Darker patches of paint or wallpaper on the walls and ceilings indicate a leak in a pipe. If you suspect a leak in the home due to higher water costs, remember to move dishwashers and fridges to check for water stains on the floor, indicating leaks in connecting lines.
Mold or mildew growth
Mold growth can appear as fuzzy, discoloured patches that grow quickly. You may also smell a musty scent in bathrooms and near kitchen connections, indicating a mold issue.
Warped or damaged flooring
Water warps flooring by absorption of the unfinished underside of the wood, which causes the bottom of the board to expand.
Peeling paint or wallpaper
The walls are usually the first areas most notice a home water leak. Moisture from the leak builds underneath the top paint layer and cracks through the paint or wallpaper.
Dripping fixtures
A leak from a dripping fixture is usually the easiest to spot and simplest to fix. Fixtures often drip due to failing o-rings and washers, which are easy for plumbers to replace.
Audible Leak Indicators
Hissing sounds within walls or floors
Hissing is a clear indicator of a leak in a pressurized water line.
Running water when fixtures aren’t in use
The sound of running water in the walls and under the floor may relate to a serious slab leak.
Gurgling in pipes
Gurgling sounds within the pipe are often the result of cracked or broken drain lines allowing air into the pipe and disrupting water flow.
Hidden Leak Warning Signs
In addition to the visual and audible indicators of a leak, there are other signs you have a moisture issue in the home. If you’re experiencing any one of the following without a clear cause, give your local Victoria plumber a call for leak analysis:
Unexplained increase in water bill
A minor leak within your pipes can add hundreds of dollars to your water costs annually. Check your water bills often for signs you’re suddenly using more water.
Reduced water pressure
Leaks in your home pipes allow air into your plumbing. The air lowers water pressure. If your shower water flow is suddenly low or you’re not getting high-pressure water from the garden hose, you may have a significant pipe leak.
Wet spots in the yard or driveway
You may find leak issues don’t begin inside the home. The leak could result from tree roots growing into the pipes or changing temperatures that cause soil erosion and impact the home sewer lines.
Home Leak Detection Methods
Water Meter Test
- Turn off all water fixtures and water-using appliances
- Record the reading on your water meter
- Wait 2 hours without using any water
- Check the meter – any change indicates a leak
Toilet Leak Test
- Add food coloring to the toilet tank
- Wait 15 minutes without flushing
- If color appears in the bowl, there’s a leak
Checking Fixtures
- Inspect all visible pipes under sinks and behind toilets
- Check faucet gaskets and pipe fittings for moisture
- Look for corrosion, which indicates slow leaks
Outdoor Inspection
- Check outdoor spigots and hose connections
- Inspect irrigation system components
- Look for unusually damp areas in your yard
Book Victoria Plumbing Leak Repair with Thunderbird Plumbing

Thunderbird Plumbing Victoria is your home leak repair specialist, ready to respond quickly to leak emergencies. If you’re experiencing the signs and symptoms of a leak in your home, request a visit from our plumbers today by calling 778-402-9431 or booking your leak service online. Our plumbers service properties across Greater Victoria, including Saanich, Oak Bay, Colwood, and Langford.
Your Victoria Pipe Leak FAQ
What Are the Seasonal Considerations in B.C. for Pipe Leaks?
Winter Considerations
- Insulate pipes to prevent freezing and bursting
- Disconnect garden hoses before freezing temperatures
- Know the location of your main water shut-off valve
- Consider shutting off water to outdoor faucets
Rainy Season Considerations
- Ensure proper drainage away from the foundation
- Check that gutters and downspouts are clear
- Inspect basement walls for seepage
- Test sump pumps if you have them
When Should I Call a Professional for Water Leaks?
Call a local Victoria plumber immediately if you notice the following leak concerns:
- High water bills with no clear leak source
- Persistent damp spots with no identifiable cause
- The water meter continues running when all water is off
- Unusual sounds in the plumbing system
How Can I Choose a Leak Detection Service?
- Verify licensing with the Technical Safety B.C.
- Look for technicians with thermal imaging cameras and acoustic detection equipment
- Request references and check reviews
- Ensure they provide a detailed assessment report
Will Insurance Pay for Home Leaks?
Your insurance provider can help explain your current levels of coverage and the deductible you’ll pay for insurance-covered leak repair. Consider the following when coordinating with insurance and your local plumber:
Coverage Information
- Review your homeowner’s policy for water damage coverage
- Understand the difference between sudden/accidental damage vs. ongoing leaks
- Document all leak-related issues with photos and reports
- Contact your insurer promptly when damage occurs
Risk Mitigation
- Some insurers offer discounts for leak-detection systems
- Consider enhanced water damage coverage if in a high-risk area
- Keep records of all plumbing maintenance and repairs