Failing to empty your septic tank regularly can lead to a host of problems, including blockages, system overflows, and environmental contamination. As sludge and scum build up in the tank, they reduce the tank’s capacity to hold wastewater, causing it to back up into your home or overflow into your garden. This can result in unpleasant odours, health hazards, and costly damage to your property. Additionally, a full septic tank puts stress on the system, leading to potential failures that could require expensive repairs or even a complete system replacement.