A question frequently asked by homeowners is: “How much does it cost to replace my septic tank?” The answer varies depending on several factors, including the characteristics of your land, the type of septic system to be installed, and the associated installation costs. This article will provide you with a detailed overview of the costs involved and the different options available.

Repair or Replacement?

Before embarking on a complete replacement of your septic tank, have you considered the possibility of a repair? Sometimes, a simple part replacement can solve the problem, allowing your septic tank to function correctly again and saving you thousands of dollars. A professional inspection can determine if a repair is sufficient or if a complete replacement is necessary.

Types of Septic Tanks: Septic Tank with Drain Field or Sealed Septic Tank?

In the world of septic tanks, there are primarily two types of systems: the septic tank with a drain field and the sealed septic tank. The septic tank with a drain field is the most common and allows wastewater to infiltrate the soil after treatment. In contrast, the sealed septic tank is used when the land does not allow for a drain field. This type of tank collects wastewater that cannot be discharged into the soil, requiring regular pumping.

Septic Tank with Drain Field

The septic tank with a drain field is designed to treat wastewater naturally. After the separation of solids, the wastewater is directed to a drain field where it slowly infiltrates the soil, undergoing natural biological treatment.

Sealed Septic Tank

The sealed septic tank is an alternative solution when the land does not permit a drain field. This hermetic system retains wastewater that must be periodically pumped and evacuated. Although less expensive to install, it requires higher maintenance costs in the long term.

Factors Influencing Installation Costs

The cost of a septic tank varies depending on several factors, including the type of tank, construction materials, required size, and specific characteristics of the land. In Quebec, septic installations are governed by the Regulation respecting waste water disposal systems for isolated dwellings (Q-2, r.22) and the Environmental Quality Act. Here are some key elements to consider:

Type of Terrain

The configuration of your land greatly influences installation costs. The slope, soil infiltration capacity, and proximity to watercourses, wells, and your home are determining factors. For example, a sloped terrain or soil with low permeability will require additional modifications, increasing costs.

Construction Materials

Septic tanks can be made of concrete or polyethylene. Concrete is robust and durable, while polyethylene is lightweight and resistant to corrosion. Prices vary based on materials:

• Concrete septic tank: $1,000 to $3,000, depending on the size of your home.
• Polyethylene septic tank: $1,700 to $3,500.
• Sealed concrete septic tank: $1,500 to $3,000.
• Sealed polyethylene septic tank: $2,700 to $5,000.

Additional Installation Costs

Besides the cost of the septic tank itself, there are additional expenses for the materials needed for installation, such as sand, crushed stone, pipes, and fittings. Here are some examples of additional costs depending on the type of tank installed:

• Sealed septic tank: $3,000 to $6,000.
• Septic tank with drain field: $5,000 to $8,000.
• Septic tank with advanced secondary treatment and polishing field: $10,000 to $26,000.
• Septic tank with advanced secondary treatment and UV or phosphorus removal: $20,000 to $45,000.

Labor Costs

The labor cost for installing a septic tank largely depends on the accessibility of your land. An easily accessible site will reduce costs, while a difficult-to-access site will increase expenses. It is crucial to hire a specialized company for these tasks to ensure a compliant and durable installation. Additional work, such as drainage arrangements or retaining walls, may be necessary to ensure the longevity of your septic tank, thus prolonging the duration of the work.

Summary

To answer the question: “How much does it cost to replace my septic tank?” there is no single answer. The total cost depends on many factors related to your land and the specific installation requirements. It is essential to collaborate with a professional in septic tank installation, such as a technologist, engineer, or geologist, to accurately assess your needs and ensure a compliant and durable installation. The installation must be carried out by a professional holding the 2.4 autonomous sanitation license from the Régie du Bâtiment du Québec.

Sanivac and Soluo

Sanivac does not install septic tanks. We specialize in the maintenance and pumping of septic tanks once they are installed. For septic tank installation, we recommend contacting our partner Soluo, specializing in septic installations. For quality pumping services, contact Sanivac.

About Soluo:

Founded in 1995, Soluo is a Quebec-based company specializing in the inspection, design, and installation of septic systems throughout Quebec. With a wealth of specialized content online and a free support service, Soluo is the true reference for septic installations in Quebec. Each year, more than 500 septic installations are inspected, designed, and installed by Soluo’s 65 experts. Soluo has become a key player in its industry due to its commitment to providing the best support to Quebec customers in their septic installation projects. For more details, visit soluo.com.