24/7 emergency plumbing services: Text name, address and pictures to +1 (236) 233-9696

Langley Backflow Testing, Repairs & Installation
Professional backflow testing, repairs, and installation in Langley, BC. Fast, reliable, and affordable service for residential and commercial properties — with no callout fees.
24/7 emergency plumbing services. Give us a call anytime and we'll be there to help.


What is Backflow?
Backflow happens when water flows opposite from its intended direction. Backflow potentially introduces toxic substances into your drinking water like human waste, fertilizers, pesticides, chlorine and chemicals, and pathogens that can cause illness.
There are two main causes of backflow: Back pressure and back siphonage.
Back Pressure
Back pressure happens when your home’s water pressure needs exceed what the supply can give. Back pressure can be caused by a boiler or power washing system malfunction.
Back Siphonage
Back siphonage happens when there’s negative pressure from a vacuum in the supply pipes. The most common causes of back siphonage are water main breaks or increased demand for water, such as fire fighting. Back siphonage causes the normal water flow to reverse direction, pulling contaminants into your drinking water.
What is Backflow Prevention?
To protect your water against backflow contamination, you can install a backwater valve. A backwater valve or backflow preventer is a simple device that allows water to flow in its intended direction, and these devices are required in some municipalities.
Backflow valves contain a small flap that is typically open to allow wastewater to exit the home and enter the sewer line.
On each side of the flap is a flotation device. If the water flow reverses, the floats lift the flap to close, stopping the contaminated water from backing up into your plumbing system.
If you’re installing a backflow valve onto your existing plumbing system, you’ll need a professional plumber and a permit from your local municipality.
Reasons You Need Regular Backflow Testing
It goes without saying, but backflow preventers require routine testing to ensure they’re working correctly and providing adequate protection. Most backflow valves are marked with dates indicating when they should be tested.
So, why is this testing so important?
Protect Your Health
As mentioned, backflow can introduce various harmful chemicals and pathogens into your drinking water, which can negatively impact your health. Routine testing ensures your backwater valve is in good working condition and will protect your family.
Prevent Damage
If you’re a property manager, routine backwater valve testing is essential to guard against damage. If water flows back into your system, the high pressure can damage walls, and the contaminated water can cause pipes to corrode prematurely.
Environmental Protection
Lastly, backflow preventers protect against contaminated water entering the water supply and ending up polluting lakes and oceans.
Backflow Testing, Repairs & Installation
Backflow Reviews
Read our client experiences with our plumbing services and solutions.
Plumblink provided prompt service when we needed it. Truly the best!
Melissa Chen
Surrey, BC
I am impressed by the professionalism and efficiency of Plumblink. They handled my plumbing issue swiftly and offered affordable rates, making the entire process smooth and stress-free.
Jason Thompson
Langley, BC
★★★★★
★★★★★
Backflow Testing, Repair & Installation Quote
Looking to get started with a quote for your next kitchen and bathroom plumbing project?
Please fill in the form to schedule your quote.
24/7 emergency plumbing services. Give us a call anytime and we'll be there to help.