Trusted Backflow Prevention in Markham – Installation, Testing & Repair

What Is Backflow Prevention and Why It Matters

Backflow happens when water moves in the opposite direction inside a plumbing system, allowing contaminated or non-potable water to enter clean water lines. This can introduce fertilizers, chemicals, or even sewage into your drinking water. That’s why backflow prevention is essential for protecting water quality and meeting local regulations in Markham. A backflow preventer is a device installed on the plumbing system to stop this reverse flow, helping both residential and commercial properties stay safe and compliant.

Residential Backflow Preventer Installation

For homeowners in Markham, installing a backflow preventer is an important step in keeping household water safe. These devices are typically installed on the main water service, lawn irrigation, or sprinkler systems to prevent contaminated water from being siphoned back into the home’s supply. Key advantages include:

• Safety: Protects drinking water from contamination.
• Compliance: Meets Markham plumbing requirements.
• Peace of Mind: Reduces risks from cross-connections and back-siphonage.

FlowCraft Plumbing Services provides professional residential backflow preventer installation to keep your home protected and up to code.

Commercial Backflow Preventer Installation

Commercial buildings in Markham — including restaurants, medical clinics, industrial facilities, and multi-unit properties — must maintain strict water safety standards. Backflow prevention is especially important in businesses where chemicals, cleaning agents, or specialized equipment are connected to the plumbing system.

• Restaurants: Keep kitchen and dishwashing water clean.
• Offices & retail: Maintain safe water for employees and visitors.
• Healthcare & daycare: Prevent any cross-contamination risks.

Our team at FlowCraft Plumbing Services offers tailored commercial backflow preventer installation to match your building’s water use, pressure, and regulatory requirements.

Sewer & Backwater Valve Installation

Beyond potable water protection, sewer-related backflow must also be controlled. During storms, heavy rain, or municipal sewer overload, wastewater can push back into basements and lower levels. Installing a backwater valve helps stop this reverse flow.

We install backwater valves for:

• Basements and finished lower levels
• Lower-level bathrooms and laundry rooms
• Homes in flood-prone or older neighbourhoods

FlowCraft Plumbing Services ensures proper location, slope, and venting so your property is protected from sewage intrusion.

Backflow Preventer Replacement

Over time, backflow devices can wear out, corrode, or fail testing. When that happens, replacement is the safest option. Common signs you need a new device include:

• Corrosion or rust on the body or fittings
• Recurring leaks around the assembly
• Failed annual test or reduced water pressure

Our licensed plumbers in Markham can replace outdated or damaged assemblies and bring your system back into compliance.

Backflow Testing and Repair

In Ontario, backflow prevention devices in many residential and commercial settings must be tested regularly. FlowCraft Plumbing Services performs certified testing to confirm the device is working and protecting the supply.

Our backflow testing service includes:

• Annual or scheduled certification
• Pressure and check-valve inspections
• Repairs or part replacement if the device fails
• Documentation for local authorities if required

Schedule testing to keep your backflow preventer approved and your water system protected.

Professional Backflow Services in Markham

FlowCraft Plumbing Services delivers complete backflow solutions in Markham — installation, replacement, testing, and repair. All work is carried out by licensed and insured plumbers familiar with Ontario plumbing codes and local cross-connection control requirements. Choosing our team means your water system stays safe, your building stays compliant, and you stay protected from costly contamination issues.

If you’re searching for a reliable plumber in London, FlowCraft Plumbing Services is your trusted local expert for all backflow prevention needs.

Reach out today for fast, professional service and lasting results!