Does Cold Weather Affect Septic Systems

During winter, the freezing temperature outside makes the various components of your septic system freeze up. With the septic tank being frozen, the waste does not break down quickly, which causes problems for the residents.

Do septic tanks drain slower in winter?

Unfortunately, the bacteria in septic tanks are sensitive to temperature and tend to slow down or even stop when the temperatures plunge below about 50°F. Combine this with the increased load placed on your septic system during the winter months due to house guests and fatty foods, and you’ve got a recipe for disaster.

Do septic tanks work in the winter?

In general, pumping septic tanks is not recommended in cold climates during the winter months. Winter’s arrival can vary year to year, but a good rule of thumb in Minnesota, for example, is to avoid pumping from November to April. Below are the most common problems associated with winter pumping.