Septic tank and drainfield installation
in Lanaudière and the Laurentians

The price of a septic tank in Quebec can vary according to several factors, including the size of the system, the type of tank, the complexity of the installation, and the particularities of the terrain. In general, for a standard installation, the cost can range from $7,000 to $15,000. This price usually includes the cost of the pit itself, installation and site preparation work. However, if additional elements such as a larger drainfield, specific pumps or site modifications are required, the price may increase. It’s important to call in a qualified professional for an accurate assessment based on your specific needs and to comply with local regulations.

The lifespan of a septic tank depends on several factors, such as the quality of the materials used, regular maintenance, and proper use of the system. In general, a properly installed and maintained septic tank can last between 20 and 40 years. Concrete tanks tend to last longer, often up to 40 years or more, while those made of plastic or fiberglass may have a slightly shorter lifespan, generally around 20 to 30 years.

To maximize the longevity of your septic tank, it’s essential to have it inspected regularly by a professional, to have it emptied every 2 to 5 years, depending on the size of the tank and the size of the household, and to avoid disposing of chemicals or non-biodegradable objects in the system. Proper maintenance can considerably extend the life of your septic system.

There are several types of septic tank, each adapted to specific needs and conditions. Here are the main types of septic tanks used in Quebec:

1. Concrete septic tank :

   • Description: The most commonly used type of pit. Made of concrete, it is durable and resistant.
   • Advantages: Long service life (up to 40 years or more), robustness.
   • Disadvantages : High weight, which can complicate installation and require heavy equipment.

2. Plastic septic tank (polyethylene) :

   • Description: Made of sturdy plastic, this pit is lighter than the concrete pit.
   • Advantages: Easy to transport and install, corrosion-resistant.
   • Disadvantages: Less durable than concrete, with a generally shorter lifespan (20 to 30 years).

3. Fiberglass septic tank:

   • Description: This type of pit is made of fiberglass, a lightweight, corrosion-resistant material.
   • Advantages: Easy to install, highly corrosion-resistant, good durability (approx. 30 years).
   • Disadvantages : Cost often higher than plastic, sensitive to certain types of impact or pressure.

4. Septic tank with bio filter :

   • Description: A septic tank that integrates a biological filter for additional wastewater treatment.
   • Advantages: Improved water treatment efficiency, reduced pollution, ideal for sensitive sites.
   • Disadvantages: Higher cost, requires regular filter maintenance.

5. Micro sewage treatment plant :

   • Description: A more advanced wastewater treatment system that includes several biological and sometimes chemical treatment stages.
   • Advantages: Highly effective in areas where the soil is unsuitable for a traditional, compact leaching bed.
   • Disadvantages : High installation cost, more complex and regular maintenance.

The choice of septic tank type depends on many factors, including household size, soil type, local regulations and available budget.

The price of emptying a septic tank in Quebec can vary depending on the region, the size of the tank, and the service company chosen. In general, the cost of emptying a septic tank is between $200 and $400.

Certain factors can influence this cost:

1. Site accessibility: If the septic tank is difficult to access, additional charges may apply for transportation or the use of specialized equipment.

2. Emptying frequency: Customers who regularly use an emptying service can benefit from preferential rates or packages.

3. Distance: If the oil change company has to travel a long distance to reach your home, additional travel costs may apply.

Regular emptying, every 2 to 5 years, is essential to ensure the proper operation and longevity of your septic tank.

* Septic tank emptying is not a service offered by DR Excavation.