In 2023, the percentage of the population connected to sewerage with tertiary treatment in Japan was recorded at 36.88%. From 2024 onwards, the forecasted figures show a steady annual increase. The values for 2024 through 2028 are estimated to be 37.85%, 38.83%, 39.8%, 40.75%, and 41.68%, respectively.
The year-on-year percentage variations from 2024 to 2028 are as follows:
- 2024-2025: +2.59%
- 2025-2026: +2.50%
- 2026-2027: +2.39%
- 2027-2028: +2.29%
Over the last two years, the average annual growth rate (CAGR) is approximately +2.44%, indicating a consistent long-term trend of incremental increases in the population connected to sewerage with tertiary treatment.
Future Trends to Watch For:
- Government policies on environmental sustainability that could accelerate the adoption of tertiary treatment
- Technological advancements in water purification processes that could drive efficiency and lower costs
- Population shifts and urbanization trends impacting sewerage infrastructure requirements
