Septic tank pumping

 What is a septic system

A conventional septic system is composed of a septic tank and a leaching bed. A septic system treats your sewage right in your own yard and releases the treated effluent back into the groundwater.

 The septic tank
The septic tank retains the solid portion of household wastewater and begins its decomposition. Heavier solids settle out of the wastewater and accumulate on the bottom of the septic tank as sludge. Lighter solids float to the surface and accumulate as scum.


 The leaching bed

Liquid wastewater leaving the septic tank is directed towards the leaching bed. Wastewater is filtered through the ground and treated naturally by the decomposing action of bacteria and micro-organisms living underground.

 The septic tank pump-out
Over time, the sludge will build up in the bottom of the septic tank. If the sludge is allowed to accumulate it will eventually flow into the leaching bed and rapidly clog the distribution pipes. Once the pipes become clogged, the wastewater will either seep to the surface of the ground or worse yet, back up into your house. Not only can a clogged septic system be hazardous to the environment and to your family’s health, it also represents a very expensive repair bill.
The municipality of Chelsea, within its septic tank, emptying program, empty, inspect and measure the sludge level of every residential tank on its territory, once every 2 years. When you will receive a notice at your doorstep saying that the municipality will be in your area soon for the pumping, you must, if the lids are underground, uncover the 2 original lids of the septic tank. We will not pump septic tanks with extension pipes. A municipal employee will attend the contractor to do an inspection of the system and to hand over an inspection report.
 Effluent filters
An effluent filter can be installed into a polyethylene outlet baffle; this will add a protection to the leaching bed. The effluent filter captures the fine particles carried by wastewater.
However, if your septic tank has one, it must be cleaned once or twice every year to prevent clogging. Simply remove the filter and rinse it with a garden hose over the solid side of your septic tank.
Please note that, since January 2009 in the province of Québec, every prefabricated septic tanks must comply with BNQ (Bureau de Normalisation du Québec) standard 3680-905, and be equipped with an effluent filter at the outlet. 
 Protect your septic system 
You should never send down the drain stuff that decomposes slowly or not at all. For example: cigarette butts, condoms, paper towels, cat litter, cooking oil, etc. These substances accumulate into the septic tank and can eventually block the leaching bed.
You should also avoid putting in the system chemical products such as paint, expired medication, backwash from a water softener (contains salts), bleach, etc. These products kill bacteria or micro-organisms that decompose normally the sludge. It is also harmful for every concrete component of septic tanks. 
If you require additional information: 819 827-6226, or by email septic tank
The installation of a septic system must conform to our Municipal By-law number 639-05 and the Q-2,r.22 Provincial Regulation respecting waste water disposal systems for isolated dwellings. 
This regulation applies to the waste water management during the construction of a new detached residence containing six bedrooms or less, the addition of another bedroom in an existing home and under certain conditions such as major renovation projects. When a residence has more than six bedrooms or for buildings that have a daily water flow rate superior to 3240 Litres, the construction of a septic system must be authorized by the Ministère du Développement durable, de l’Environnement et des Parcs du Québec. 
An isolated dwelling is serviced by an individual waste water disposal system unless it is serviced by an authorized sewer system. All other sewer hook-up projects are subject to approval by an officer in charge. These requirements on septic installations also apply to new subdivisions. It is advisable to request information from the Municipal Planning Officer before the initiation of any subdivision request.
By respecting the regulatory provisions, you contribute to the promotion of our public health and the protection of our environment.
If you require additional information: 819-827-6226 or Septic systems
Click HERE to consult By-law 639-05  (See Section for Septic installation)
 Before you begin
For further information regarding your request, please call 819 827-6226 to speak with a representative of the Planning and sustainable development division who will assist you in answering all of your concerns and confirm the documents you will need to bring with you when you apply for a permit.