backflow1

Backflow Preventer Inspection, Testing, Installation, Repair and Replacement

Active Fire and Safety Services has a team of certified backflow preventer technicians who provide a full range of backflow prevention services from  inspections, tests, installations, repair and replacement.  All work is done to municipal standards and approvals.
Jump to a section on this page:

  1. Backflow Preventer Servicing
  2. Backflow Preventer Techs
  3. Potable Water System Installation and Containment
  4. Backflow Prevention Device Installation and Testing
  5. Contact us for a Free Quote

The Canadian Standards Association (CAN/CSA B64.10 4.5.2) refers to similar backflow prevention devices on fire and domestic water services of all classes.  This is based on the highest hazard presented by the building or its use.  This enforces the code in a way to provide enhanced protection to the potable water system regardless of the potential hazard, be it high or low.

BOOK INSPECTION

Backflow Preventer Techs – BC Building Code and AWWA Compliant

Water safety regulators have established a scale of potential hazards for potable water systems.  Each type of potable water system has its own set of specific equipment that needs to be used.  Fire suppression chemicals, antifreeze fluid and the auxiliary water supply are all elements that our certified technicians will consider to ensure proper public safety and BC Fire Code, BC Building Code, AWWA and CSA compliance.

Potable Water System and Treatment Device Installation and Containment – Health and Safety

BC Building Code 1998 Section 7.6.2.1 Connection of Systems.

Connections to potable water systems are designed and installed so that non-potable water or substances can’t contaminate the system.  Correct placement of the water treatment system is critical.  It must be a safe distance from the auxiliary line so as to keep the public water supply free from contaminants.

We at Active Fire and Safety Services understand these threats and use backflow prevention system methods as set out by BC Building Code to be sure there is safe drinking water for all.  A properly working and maintained backflow prevention system will trap contaminated water and keep it from flowing in the wrong direction.

Backflow Prevention Device Installation and Testing – Public Water Supply Protection

All water purveyors have a responsibility to provide safe consumable water.  Cross-connections in private premises and water purveyor’s sources can cause severe hazards.  Backflow prevention devices are installed to protect the public water supply and therefore backflow preventer testing must be done on a regular basis.

A backflow preventer consists of a set of valves that only allows safe water to flow into the system. There are several types of mechanical backflow prevention devices. The different types are used in different situations and for different levels of hazard.  The main types are high, medium and low hazard.

High Hazard Water Contamination – Double Check Valve Assembly, Reduce Pressure Principal Assembly

These two different systems are used in cross-connection when a health hazard is present in the water supply that can cause sickness or death.
Backflow-Preventers2

Medium Hazard Water Contamination – Pressure Vacuum Breaker and Dual Check Valve

These two types of devices used in a non-health (non-toxic) hazards where a polluting substance may come in contact with potable water.  This will affect the taste, odor or appearance of the water, but is not hazardous to health.

Low Hazard Water Contamination – Dual Check with Atmospheric Port, Atmospheric Vacuum Breaker and Air Gap

These are three low hazard devices that are commonly used which allow isolation of the water supply system as per regulations.  The water has no hazards and this device is purely in place as per AWWA and regulatory body requirements.

Please visit the American Waterworks site for more details about how a backflow preventer works.

Contact us for A Free Quote for Backflow Preventer Installation, Maintenance, Repair and Replacement

Contact us via the form to the left or call us at 604- 0149 for backflow preventer testing, maintenance and replacement services.  We are fully compliant with BC Fire Code, BC Building Code, Vancouver and Greater Vancouver Building By Laws.

FAQ

Questions? Look here.

What is Backflow and why is it dangerous?

Backflow is the unwanted reversal of water flow in a piping system. Instead of water flowing into your building from the city main, pressure changes can cause water from your building (which may be contaminated with chemicals, fire sprinkler water, or irrigation fertilizers) to flow back into the public drinking water supply. This poses a serious health risk to the community.

What causes Backflow to happen?

Backflow typically happens due to one of two physical conditions:

  1. Back Siphonage: Occurs when there is a sudden drop in pressure in the city main (e.g., due to a water main break or fire hydrants being opened nearby), “sucking” contaminated water back into the system.
  2. Back Pressure: Occurs when the pressure in your building’s system (e.g., from a booster pump or boiler) becomes higher than the city’s supply pressure, “pushing” water back into the main.

What is a Backflow Preventer?

A backflow preventer is a mechanical plumbing device installed on your water pipes that acts as a one-way gate. It allows water to enter your building but physically prevents it from flowing backward, ensuring that any contaminants in your pipes stay contained within your property.

How often must my Backflow Preventer be tested?

In virtually all British Columbia municipalities, backflow preventers must be tested annually. This is a mandatory requirement enforced by municipal water purveyors to ensure the device has not failed or become infiltrated by debris.

Who is authorized to test Backflow Preventers?

Tests must be performed by a BCWWA (British Columbia Water & Waste Association) Certified Cross Connection Control Tester. Standard plumbers cannot perform this test unless they hold this specific certification. Active Fire’s technicians are fully certified to test, repair, and tag your devices.

Will my water be shut off during the test?

Yes, but only briefly. The testing process requires the water supply to the specific device to be isolated. Typically, the water is off for 15 to 30 minutes per device. We coordinate with you to schedule tests at convenient times to minimize disruption to your business or tenants.

What happens if I forget to have my Backflow Preventer device tested?

Municipalities track these devices closely. If you fail to submit your annual test report, you may receive a compliance order or fine. In severe cases, the city has the authority to shut off water service to your property until the device is proven to be functioning.

What is the difference between a DCVA and an RPBA?

These are the two most common types of devices:

  1. DCVA (Double Check Valve Assembly): Used for moderate hazards (e.g., fire sprinkler systems, general domestic lines). It has two internal check valves.
  2. RPBA (Reduced Pressure Backflow Assembly): Used for high hazards (e.g., irrigation systems with chemicals, car washes, boilers). It has two check valves plus a relief valve that dumps water out if a failure occurs, offering a higher level of protection.

My backflow preventer failed its test. What now?

A failed test means the internal seals or springs are no longer holding back pressure effectively. Remedies include:

  1. Cleaning: Often, the device just needs to be opened and cleaned of debris (sand, pebbles) that is preventing a tight seal.
  2. Repair: If the rubber parts are worn, we install a repair kit (new rubber and springs).
  3. Retest: After cleaning or repair, the device must be re-tested immediately to confirm it passes. Active Fire handles the repair and re-testing in a single visit whenever possible.

Why is my Reduced Pressure (RP) device leaking water?

An RP device is designed to drip or dump water if it senses a pressure fluctuation or a failure. If it is discharging a steady stream of water, it usually indicates that one of the internal check valves is fouled or broken, or the relief valve is stuck open. This requires immediate service.

Does Active Fire handle the Backflow Preventer test paperwork?

Yes. After every test, our certified technicians complete the specific test report form required by your local municipality (e.g., City of Vancouver, City of Surrey). We submit a copy to the city on your behalf and provide you with a copy for your records, ensuring you remain fully compliant without the administrative hassle.

Does Active Fire install new backflow preventers?

Yes. If you are constructing a new building, upgrading a renovation, or if your existing device is beyond repair, we can supply and install a new, code-compliant backflow prevention assembly tailored to your system’s size and hazard level.

How do I book a Backflow Preventer test?

Call Active Fire at 604-590-0149 or use the Contact Us form on our website. It is helpful to have your reminder letter from the city handy so we can confirm the specific device ID and location.

Contact Us for a Custom Quote! line

reCAPTCHA