Keep Your Water Supply Safe & Compliant
Backflow occurs when contaminated water reverses direction and enters your clean water supply - a serious health hazard. Many Surrey properties are legally required to have a backflow prevention assembly that is tested annually by a certified tester.
WaterLine Plumbing employs certified backflow assembly testers who install, test, repair, and certify devices for residential, commercial, and irrigation systems. We file the paperwork with your water authority so you stay fully compliant.
Backflow Services
Annual Backflow Testing
Certified testing and reporting to meet municipal requirements.
Device Installation
Proper sizing and installation of code-approved assemblies.
Backflow Repair
Rebuild and repair failed or leaking backflow devices.
Cross-Connection Control
Survey and eliminate hazardous cross-connections.
Irrigation Backflow
Testing and service for lawn and sprinkler systems.
Compliance Filing
We submit results directly to your water purveyor.
Why Choose Us Over the Competition
Anyone can fix a pipe. We earn your trust with honesty, expertise, and guarantees other companies won't match.
Upfront Pricing
Flat-rate quotes approved before we start. No hidden fees or overtime surprises.
Licensed & Insured
Red Seal certified, TSBC licensed, and fully insured for your protection.
Same-Day Service
Fast appointments and true 24/7 emergency response across the Lower Mainland.
Satisfaction Guarantee
Every job is backed in writing. If you're not happy, we make it right.
How It Works
Getting help from WaterLine Plumbing is fast and stress-free, from your first call to a job done right.
Call or Book Online
Reach us 24/7. We schedule a convenient time and confirm your upfront pricing.
Expert Diagnosis
A licensed technician inspects the issue and explains your options in plain language.
Approve the Price
You approve a flat-rate price before any work begins, with no surprises, ever.
Guaranteed Repair
We complete the work cleanly and back it with our written satisfaction guarantee.
You May Need Backflow Service If
Recognize any of these? Don't wait - early service saves you money and stress.
What Our Customers Say
"The technician was polite and took care of a complex water heater problem quickly. Took the time to explain everything to me. I am very pleased with the service!"
Sarah M.
Surrey, BC
"Louis was very professional and did a fantastic job getting my plumbing working. Will definitely use WaterLine Plumbing again for all my plumbing needs."
James K.
Langley, BC
"Jason was polite, explained his assessment thoroughly, and definitely went the extra mile to get us set up. Excellent emergency service at 2 AM!"
Michelle T.
White Rock, BC
"The technician was polite and took care of a complex water heater problem quickly. Took the time to explain everything to me. I am very pleased with the service!"
Sarah M.
Surrey, BC
Why the Lower Mainland Trusts WaterLine Plumbing
Accredited, licensed, and independently reviewed. WaterLine Plumbing meets the highest standards for safety, quality, and customer trust.
Backflow Prevention & Testing FAQs
How often does a backflow device need testing?
Most municipalities require certified backflow testing once per year. We track your due date and handle the filing so you never miss a deadline.
Who needs a backflow preventer?
Commercial properties, irrigation systems, and many residential connections are required to have one. If you received a notice from your water authority, we can help.
Can you repair a failed backflow assembly?
Yes. If your device fails a test, our certified testers can rebuild or replace it and re-test to bring you back into compliance.
Proudly Serving Surrey & the Lower Mainland
Local, licensed technicians ready to help in your neighborhood.
- Surrey
- Langley
- White Rock
- Delta
- Cloverdale
- Newton
- Fleetwood
- Guildford
- South Surrey
- North Delta
- Langley City
- Walnut Grove
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One trusted team for all your home's plumbing, heating, and comfort needs.