Phil Excavation Inc.

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Everything You Need to Know About Your Underground Infrastructure

Are you planning a water service line or sewer work for your commercial or residential building? Phil Excavation Inc. answers the most common questions about installation, repair, and replacement of your underground pipes. Our team has over 50 years of experience in Greater Montreal and guides you through every step of your project.

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  • How Long Does a Residential or Commercial Water Service Line Last?

    A copper or PEX (cross-linked polyethylene) water service line installed according to current standards lasts 50 to 70 years. Old lead or galvanized steel pipes have a shorter lifespan of 30 to 50 years due to corrosion.


    Factors influencing longevity include soil type, municipal water quality, and installation depth. In Montreal, freeze-thaw cycles also affect the durability of poorly insulated pipes.

  • What Are the Signs That a Sewer System Needs to Be Replaced?

    Main indicators include frequent backups, persistent sewer odours, wet or sunken areas on your property, and drains that clog recurrently.


    Clay or cast iron sewer pipes, common in Montreal properties built before 1980, are vulnerable to cracks caused by tree roots and soil movement.


    A camera inspection can confirm the extent of damage and determine whether localized repair or complete replacement is necessary.

  • Is Replacement Mandatory for Lead Water Service Lines in Montreal?

    Yes, lead water service line replacement is mandatory in Montreal. The City requires upgrading during major renovation work, change of ownership, or municipal pipe replacement. Lead pipes contaminate drinking water, particularly when water stagnates, presenting serious health risks.


    The City of Montreal offers a subsidy program to help property owners replace their lead water service lines. Phil Excavation Inc. assists with the process and performs compliant installation.

  • How Much Does a Water Service Line Installation Cost for Commercial Sprinkler Systems?

    The cost varies depending on the distance between the municipal network and your building, the required pipe diameter, excavation complexity, and specific flow requirements. Institutional projects also require rigorous pressure testing and complete documentation.


    Phil Excavation Inc. provides detailed free estimates that account for all these elements, allowing you to budget precisely without surprises.

  • What Is the Required Depth for a Water Service Line in Montreal?

    In Montreal and the metropolitan area, water service entries must be installed at a minimum depth of 1.8 metres (6 feet) to prevent freezing during winter. This depth varies slightly according to surrounding municipalities. The frost line in Quebec typically reaches 1.8 to 2 metres during harsh winters. Pipes installed too close to the surface risk freezing, causing costly ruptures.


    Phil Excavation Inc. knows the specific regulations and guarantees installation according to standards.

  • Are Permits Required to Install or Repair a Water Service or Sewer Line?

    Yes, permits are required to perform these types of work. Phil Excavation Inc. can handle obtaining all required permits for you.

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