Backflow Prevention & Cross-Connection Control Services in Chilliwack & the Lower Mainland
Protect your water supply with certified backflow testing, installation, repairs, and annual inspections, fully compliant with BC regulations.
Book Your Backflow Test or Device Installation
Backflow Prevention & Cross-Connection Control Services in Chilliwack & the Lower Mainland
Protect your water supply with certified backflow testing, installation, repairs, and annual inspections, fully compliant with BC regulations.
Book Your Backflow Test or Device Installation
Cohesive Mechanical provides certified backflow prevention services for homes, businesses, and commercial facilities. We install, test, repair, and certify all types of backflow prevention assemblies to keep your water supply safe and fully compliant with municipal requirements.
Protect your building and stay compliant with BC regulations.
Protect your building and stay compliant with BC regulations.
Protect your building and stay compliant with BC regulations.
Why Backflow Prevention Matters
Backflow can contaminate your drinking water with pesticides, chemicals, sewage, or other hazardous materials. Municipalities across BC — including Chilliwack and the Lower Mainland — require annual backflow testing for many buildings.
We ensure your water system stays:
Safe – Protected from contamination
Compliant – Meets all city & provincial regulations
Reliable – Maintained and tested by certified professionals
Why Choose Cohesive Mechanical
Certified Backflow Testers - Fully licensed, insured, and cross-connection certified.
Annual Reports Submitted for You - We handle all municipal paperwork and compliance records.
Full Installation, Testing & Repair - All makes and models, residential and commercial.
Fast Scheduling - Same-day or next-day testing appointments available.
Commercial Specialists - Trusted by strata, industrial, and commercial facilities across the Fraser Valley and Lower Mainland.
Our Backflow Prevention Services
1. Backflow Device Testing (Annual Certification)
We test all backflow devices - RP, DCVA, PVB, SVB - using calibrated equipment, ensuring they meet BC Waterworks and cross-connection control requirements. Certification documents are sent directly to your municipality.
2. Backflow Prevention Installation
We install new backflow assemblies for:
Commercial buildings
Multi-unit residential
Irrigation systems
Fire suppression systems
Restaurants & food services
Industrial facilities
All installations meet local bylaws and CSA B64 standards.
3. Backflow Repair & Replacement
If a device fails testing or shows signs of wear, we repair or replace it quickly using CSA-approved components.
4. Cross-Connection Control Inspections
We inspect your entire building's water system to identify potential cross-connection risks and recommend compliant solutions.
What We Use
Calibrated Backflow Test Kits - Required for municipal certification.
CSA-Approved Backflow Assemblies - RP, DCVA, PVB, SVB devices.
Commercial-Grade Valves & Fittings - Built for high-pressure applications.
Compliance Documentation Tools - For accurate reporting and submission.
The Benefits
Protect Your Drinking Water - Prevent contamination from irrigation, fire lines, chemicals, and more.
Meet City Requirements - Avoid fines or water service interruption.
Fast Testing & Certification - No delays — we handle all paperwork.
Long-Term Reliability - Quality parts and professional service extend device life.
Who We Serve
Strata & Multi-Unit Residential
Commercial Offices & Retail
Industrial & Manufacturing
Restaurants & Food Services
Schools & Municipal Facilities
Residential Irrigation Systems
Why Backflow Prevention Matters
Backflow can contaminate your drinking water with pesticides, chemicals, sewage, or other hazardous materials. Municipalities across BC — including Chilliwack and the Lower Mainland — require annual backflow testing for many buildings.
We ensure your water system stays:
Safe – Protected from contamination
Compliant – Meets all city & provincial regulations
Reliable – Maintained and tested by certified professionals
Why Choose Cohesive Mechanical
Certified Backflow Testers - Fully licensed, insured, and cross-connection certified.
Annual Reports Submitted for You - We handle all municipal paperwork and compliance records.
Full Installation, Testing & Repair - All makes and models, residential and commercial.
Fast Scheduling - Same-day or next-day testing appointments available.
Commercial Specialists - Trusted by strata, industrial, and commercial facilities across the Fraser Valley and Lower Mainland.
Our Backflow Prevention Services
1. Backflow Device Testing (Annual Certification)
We test all backflow devices - RP, DCVA, PVB, SVB - using calibrated equipment, ensuring they meet BC Waterworks and cross-connection control requirements. Certification documents are sent directly to your municipality.
2. Backflow Prevention Installation
We install new backflow assemblies for:
Commercial buildings
Multi-unit residential
Irrigation systems
Fire suppression systems
Restaurants & food services
Industrial facilities
All installations meet local bylaws and CSA B64 standards.
3. Backflow Repair & Replacement
If a device fails testing or shows signs of wear, we repair or replace it quickly using CSA-approved components.
4. Cross-Connection Control Inspections
We inspect your entire building's water system to identify potential cross-connection risks and recommend compliant solutions.
What We Use
Calibrated Backflow Test Kits - Required for municipal certification.
CSA-Approved Backflow Assemblies - RP, DCVA, PVB, SVB devices.
Commercial-Grade Valves & Fittings - Built for high-pressure applications.
Compliance Documentation Tools - For accurate reporting and submission.
The Benefits
Protect Your Drinking Water - Prevent contamination from irrigation, fire lines, chemicals, and more.
Meet City Requirements - Avoid fines or water service interruption.
Fast Testing & Certification - No delays — we handle all paperwork.
Long-Term Reliability - Quality parts and professional service extend device life.
Who We Serve
Strata & Multi-Unit Residential
Commercial Offices & Retail
Industrial & Manufacturing
Restaurants & Food Services
Schools & Municipal Facilities
Residential Irrigation Systems
Why Backflow Prevention Matters
Backflow can contaminate your drinking water with pesticides, chemicals, sewage, or other hazardous materials. Municipalities across BC — including Chilliwack and the Lower Mainland — require annual backflow testing for many buildings.
We ensure your water system stays:
Safe – Protected from contamination
Compliant – Meets all city & provincial regulations
Reliable – Maintained and tested by certified professionals
Why Choose Cohesive Mechanical
Certified Backflow Testers - Fully licensed, insured, and cross-connection certified.
Annual Reports Submitted for You - We handle all municipal paperwork and compliance records.
Full Installation, Testing & Repair - All makes and models, residential and commercial.
Fast Scheduling - Same-day or next-day testing appointments available.
Commercial Specialists - Trusted by strata, industrial, and commercial facilities across the Fraser Valley and Lower Mainland.
Our Backflow Prevention Services
1. Backflow Device Testing (Annual Certification)
We test all backflow devices - RP, DCVA, PVB, SVB - using calibrated equipment, ensuring they meet BC Waterworks and cross-connection control requirements. Certification documents are sent directly to your municipality.
2. Backflow Prevention Installation
We install new backflow assemblies for:
Commercial buildings
Multi-unit residential
Irrigation systems
Fire suppression systems
Restaurants & food services
Industrial facilities
All installations meet local bylaws and CSA B64 standards.
3. Backflow Repair & Replacement
If a device fails testing or shows signs of wear, we repair or replace it quickly using CSA-approved components.
4. Cross-Connection Control Inspections
We inspect your entire building's water system to identify potential cross-connection risks and recommend compliant solutions.
What We Use
Calibrated Backflow Test Kits - Required for municipal certification.
CSA-Approved Backflow Assemblies - RP, DCVA, PVB, SVB devices.
Commercial-Grade Valves & Fittings - Built for high-pressure applications.
Compliance Documentation Tools - For accurate reporting and submission.
The Benefits
Protect Your Drinking Water - Prevent contamination from irrigation, fire lines, chemicals, and more.
Meet City Requirements - Avoid fines or water service interruption.
Fast Testing & Certification - No delays — we handle all paperwork.
Long-Term Reliability - Quality parts and professional service extend device life.
Who We Serve
Strata & Multi-Unit Residential
Commercial Offices & Retail
Industrial & Manufacturing
Restaurants & Food Services
Schools & Municipal Facilities
Residential Irrigation Systems
FAQs
What is backflow and why is it dangerous?
Backflow occurs when water flows in the reverse direction, potentially pulling contaminants into your drinking water. This can include chemicals, irrigation runoff, bacteria, or sewage.
Is backflow testing required in BC?
Yes. Municipalities including Chilliwack, Abbotsford, and Lower Mainland cities require annual backflow testing for many commercial and multi-unit properties.
How often do I need to test my backflow device?
Once per year, or immediately after installation, repair, or any device replacement.
What types of backflow devices do you test?
We test and certify:
RP (Reduced Pressure Principle Assemblies)
DCVA (Double Check Valve Assemblies)
PVB / SVB (Pressure Vacuum Breakers)
Do you handle the paperwork?
Yes. After testing, we complete and send the certification documents directly to your municipality.
How long does testing take?
Most tests take 20–40 minutes per device.
What happens if my device fails the test?
Our technician will explain the issue and provide a repair or replacement quote. We can often repair devices on the same visit.
Do you install new backflow devices?
Yes. We install all CSA-approved models for residential, commercial, and industrial applications.
FAQs
What is backflow and why is it dangerous?
Backflow occurs when water flows in the reverse direction, potentially pulling contaminants into your drinking water. This can include chemicals, irrigation runoff, bacteria, or sewage.
Is backflow testing required in BC?
Yes. Municipalities including Chilliwack, Abbotsford, and Lower Mainland cities require annual backflow testing for many commercial and multi-unit properties.
How often do I need to test my backflow device?
Once per year, or immediately after installation, repair, or any device replacement.
What types of backflow devices do you test?
We test and certify:
RP (Reduced Pressure Principle Assemblies)
DCVA (Double Check Valve Assemblies)
PVB / SVB (Pressure Vacuum Breakers)
Do you handle the paperwork?
Yes. After testing, we complete and send the certification documents directly to your municipality.
How long does testing take?
Most tests take 20–40 minutes per device.
What happens if my device fails the test?
Our technician will explain the issue and provide a repair or replacement quote. We can often repair devices on the same visit.
Do you install new backflow devices?
Yes. We install all CSA-approved models for residential, commercial, and industrial applications.
FAQs
What is backflow and why is it dangerous?
Backflow occurs when water flows in the reverse direction, potentially pulling contaminants into your drinking water. This can include chemicals, irrigation runoff, bacteria, or sewage.
Is backflow testing required in BC?
Yes. Municipalities including Chilliwack, Abbotsford, and Lower Mainland cities require annual backflow testing for many commercial and multi-unit properties.
How often do I need to test my backflow device?
Once per year, or immediately after installation, repair, or any device replacement.
What types of backflow devices do you test?
We test and certify:
RP (Reduced Pressure Principle Assemblies)
DCVA (Double Check Valve Assemblies)
PVB / SVB (Pressure Vacuum Breakers)
Do you handle the paperwork?
Yes. After testing, we complete and send the certification documents directly to your municipality.
How long does testing take?
Most tests take 20–40 minutes per device.
What happens if my device fails the test?
Our technician will explain the issue and provide a repair or replacement quote. We can often repair devices on the same visit.
Do you install new backflow devices?
Yes. We install all CSA-approved models for residential, commercial, and industrial applications.
Need backflow testing, installation, or repair?
Need backflow testing, installation, or repair?
(Serving Chilliwack, Abbotsford, Agassiz, and the Fraser Valley)
(Serving Chilliwack, Abbotsford, Agassiz, and the Fraser Valley)
Other Services
Other services we offer
Other Services
Other services we offer
Other Services
Other services we offer
Contact Us Today
Give your home or business the preventative maintenance that it deserves. Cohesive Mechanical is here to help with all your plumbing and HVAC needs, so your space stays comfortable and efficient year-round.
Contact Us Today
Give your home or business the preventative maintenance that it deserves. Cohesive Mechanical is here to help with all your plumbing and HVAC needs, so your space stays comfortable and efficient year-round.
Contact Us Today
Give your home or business the preventative maintenance that it deserves. Cohesive Mechanical is here to help with all your plumbing and HVAC needs, so your space stays comfortable and efficient year-round.