What are the disadvantages of sewage system?

Sewage systems can have several disadvantages, including high maintenance and operational costs, which can strain municipal budgets. They can also lead to environmental pollution if not properly managed, as untreated sewage can contaminate water sources. Additionally, sewage systems can contribute to public health issues if there are system failures or overflows, potentially exposing communities to harmful pathogens. Finally, they require significant infrastructure investments, which can be challenging in densely populated or economically disadvantaged areas.