What is one disadvantage of using septic systems?

Using septic systems has certain disadvantages, and one major concern is their potential to leak and contaminate groundwater. Septic systems function by treating wastewater on-site, but if not properly designed, installed, or maintained, they can fail over time. A failing septic system may allow untreated sewage to seep into the surrounding soil and groundwater, which poses risks to public health and the environment. This contamination can lead to serious issues, such as the spread of waterborne diseases and pollution of local water supplies, which can affect drinking water sources and local ecosystems.

In contrast, options that suggest septic systems are inexpensive to maintain or require no maintenance do not accurately reflect reality. All septic systems require regular maintenance, including inspections and possible pumping to function correctly. Additionally, while a well-maintained septic system can help manage wastewater, it does not inherently enhance local water quality; rather, it poses risks if not properly managed. Therefore, the ability of septic systems to potentially pollute groundwater makes their leak potential a significant disadvantage.