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Family & Women-Owned

Serving Central New Jersey Since 1977

Licensed & Insured

Plumbing, HVAC & Remodeling Under One Roof

Financing Available

24-Hour Emergency Response Available

Backflow Prevention & Testing

Central New Jersey

Family & Women-Owned

Serving Central New Jersey Since 1977

Licensed & Insured

Plumbing, HVAC & Remodeling Under One Roof

Financing Available

24-Hour Emergency Response Available

Backflow Testing, Repair & Installation

Backflow prevention devices help protect potable water systems from unwanted reverse flow. MSI Plumbing & Remodeling provides backflow testing, repair, replacement, and installation services throughout Central New Jersey for applicable residential and commercial systems.


Our team can help determine what type of device is installed, whether testing is required, and what repair or documentation may be needed based on the system and local requirements.

Why Backflow Prevention Matters for Your Property

Backflow can occur when pressure changes allow water to move in the wrong direction through a plumbing system. Backflow prevention devices are designed to help protect potable water from cross-connections with non-potable sources.

  • Helps protect potable water from cross-connections
  • Supports compliance with applicable plumbing and municipal requirements
  • Provides a testable safeguard where backflow protection is required
  • Allows failed components to be identified and repaired
  • Provides documentation when testing is required by the authority having jurisdiction

Testing and maintenance requirements depend on the type of device, property, and local regulations. MSI can help you understand what applies to your system.

Why Choose MSI Plumbing and Remodeling

Backflow work is specialized plumbing that requires the right certification, testing equipment, and documentation. MSI provides backflow testing and service as part of our broader licensed plumbing capabilities.

  • Certified backflow testing
  • Licensed and insured plumbing professionals
  • Backflow device repair and replacement
  • New backflow prevention device installation
  • Testing documentation and reporting when required
  • Plumbing, HVAC, and remodeling under one roof

If a device fails testing, we can explain what failed, what repair may be needed, and whether retesting is required after the repair.

A Little Backflow History

Backflow prevention isn’t just a plumbing technicality. Concerns about protecting public drinking-water systems received increased attention after 9/11, including the potential for contamination through cross-connections. Testing requirements have continued to evolve as water-system safeguards have become more formalized.

Need Backflow Testing or Service?

If you have a backflow device that needs testing, repair, replacement, or documentation, MSI can help determine what is required for your system. Book online or contact us.

Need Backflow Testing or Service?

If you have a backflow device that needs testing, repair, replacement, or documentation, MSI can help determine what is required for your system. Book online or contact us.

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