Sewage Backup Prevention

Professional Backwater Valve Installation Protects Your Home

A backwater valve (also called a sewer backflow preventer or check valve) is a critical safety device that prevents sewage from backing up into your home during heavy rains or municipal sewer overflows. Mansour's Innovations specializes in professional backwater valve installation that meets all Michigan building codes and protects your property from costly flood damage.

Sewage backups can cause tens of thousands of dollars in damage, destroy personal belongings, and create serious health hazards. Installing a backwater valve is one of the most effective ways to protect your basement from this devastating problem. Our expert plumbers ensure proper installation, testing, and documentation to give you peace of mind and potentially reduce your insurance premiums.

See How Backwater Valves Work

Our Backwater Valve Work

Professional backflow prevention that protects your home

Backwater valve installation — Backwater Valve Installation

Backwater valve excavation — Floor Excavation

Completed backwater valve — Completed Installation

Completed installation — Completed Install

Professional backwater valve — Professional System

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Our Backflow Prevention Services

Backwater Valve Installation

Professional installation of backwater valves that automatically close when sewage tries to flow backward into your home.

Check Valve Systems

Installation of check valves and backflow prevention devices for all plumbing fixtures below the flood level.

Flood Prevention

Complete sewage backup protection systems that safeguard your basement from municipal sewer overflows.

Code Compliance

All installations meet Michigan building codes and municipal requirements. Full documentation provided.

Maintenance & Testing

Regular maintenance, testing, and cleaning services to ensure your backwater valve functions properly.

Emergency Service

24/7 emergency backwater valve repair and replacement when you need it most.

Our Installation Process

Property Assessment

We inspect your sewer system, basement layout, and plumbing configuration to determine the best backwater valve solution.

Location Selection

Our experts identify the optimal location for the backwater valve to protect all basement fixtures while allowing proper access for maintenance.

Professional Installation

We excavate the necessary area, install the backwater valve assembly, and ensure all connections are watertight and code-compliant.

Testing & Verification

Comprehensive testing ensures the valve opens and closes properly, water flows correctly, and the system functions as designed.

Documentation & Training

We provide complete documentation for insurance and building departments, plus train you on maintenance requirements.

Why Choose Mansour's for Backwater Valves?

Code-Compliant Installation

All installations meet Michigan building codes and municipal requirements with full documentation.

Expert Experience

Specialized expertise in backwater valve installation and sewage backup prevention systems.

Insurance Documentation

Complete documentation provided for insurance claims and potential premium reductions.

Quick Installation

Efficient installation process minimizes disruption to your home and daily routine.

Frequently Asked Questions

A backwater valve is installed in your main sewer line and contains a flap that normally stays open to allow sewage to flow out. When sewage tries to flow backward into your home (during municipal sewer backups or heavy rain events), the flap automatically closes, preventing sewage from entering your basement. Once the backup clears, the flap reopens to allow normal drainage.

Many Michigan municipalities now require backwater valves for new construction and basement renovations that include plumbing fixtures below the flood level. Even if not required, they're highly recommended as they can prevent catastrophic damage. Some insurance companies offer premium reductions for homes with properly installed backwater valves.

Backwater valves should be inspected and cleaned at least once per year. The valve lid can be removed to check the flap mechanism for debris, sediment, or damage. We recommend professional maintenance to ensure the valve operates correctly. Regular cleaning prevents the flap from sticking and ensures reliable protection when you need it most.

Installation costs typically range from $2,000 to $5,000 depending on accessibility, basement floor type (concrete vs. dirt), pipe depth, and the number of fixtures being protected. While this may seem expensive, it's a small price compared to the $20,000-$50,000+ cost of sewage backup cleanup and repairs. Some municipalities offer rebates or subsidies for backwater valve installation.

Many insurance companies offer premium reductions for homes with professionally installed backwater valves, as they significantly reduce the risk of sewage backup claims. Some insurers require backwater valves as a condition for coverage in high-risk areas. We provide complete documentation of the installation for your insurance company. Contact your insurance agent to learn about potential savings.

Sewer Backflow Preventers & Backwater Valves