As Japan’s sewers age, a few towns are considering a switch to septic tanks

Approximately 15% of municipalities in Japan are currently considering the replacement of aging sewer infrastructure with combined septic tanks. This shift is being explored as the country’s existing sewage systems reach the end of their operational lifespans and require significant maintenance or upgrades.

The move toward septic tanks represents a potential strategic pivot in how local governments manage wastewater treatment. By evaluating these alternatives, towns aim to address the logistical and financial challenges posed by the degradation of conventional sewer networks.