Publications Plus online catalog
This Land
50 Ways Farmers Can Protect Their Groundwater
50 ways 57 ways 60 ways

40. Make Sure Your Septic System Operates Correctly

septic system operation

If you don't maintain your septic system on a regular basis, the system could malfunction, possibly causing problems: contamination of groundwater and surface water; spread of sewage-borne diseases such as cholera, typhoid fever, and more commonly, gastroenteritis; or costly damage to your home and septic system.

The key factors in keeping a septic system operating properly are proper soil conditions, proper sizing of the system, and homeowner maintenance. Therefore, it's important to know the basic components of the system and how to keep them functioning properly.

septic diagram The septic tank is usually a concrete container that receives wastewater from your bathroom, kitchen, and laundry room. It allows heavy particles, or sludge, to settle and light materials, or scum, to float. In the tank, bacteria break down some waste products, allowing liquids to move into the absorption system.
absorption system The absorption system, or drainfield, consists of a distribution box, perforated distribution lines, and a soil area that has the capacity to accept wastewater. Wastewater from the septic tank moves through the drainfield, where harmful microorganisms, organic materials, and nutrients are removed.
septic system maintenance To help your septic system operate correctly, know the location of all of the parts of your system, and don't run heavy vehicles over them.
homeowners attempt to locate their septic tank In this photo, homeowners attempt to locate their septic tank.
septic system maintenance Avoid planting trees or shrubs near drain tiles. Their roots can clog drain lines. Also, divert surface runoff around the system, if possible. And be careful of what you dispose of in the toilet or in your drains. Household chemicals can destroy the bacteria that break down organic material in your septic tank; garbage disposals can add unnecessary solids and grease to your system; and non-biodegradable material can clog the absorption field.
clogged drainfield When a drainfield becomes clogged, it can no longer handle septic tank effluent.
septic system maintenance Conserve water whenever possible. To avoid overloading your system on any particular day, try to distribute throughout the week your laundry and other chores that require heavy water use. Install a lint trap on the washing machine because lint can clog the septic system.
septic system maintenance Finally, monitor your septic tank annually, and have a reputable contractor pump it out every two to three years.
pumping tank In some cases, the tank may need to be pumped out even more frequently.
Next
 

University of Illinois Logo