The share of the population connected to wastewater treatment in Japan stood at 94% in 2023. The forecast data shows a gradual increase: 94.5% in 2024, 95% in 2025, 95.5% in 2026, 96% in 2027, and 96.5% in 2028. Year-on-year, the percentage increases steadily by roughly 0.5 percentage points. Over the last two years, the increase has been consistent. The Compound Annual Growth Rate (CAGR) over the last five years indicates an average annual increase of approximately 0.5%.
Going forward, trends to watch include technological advancements in wastewater treatment, government policies promoting environmental sustainability, and potential shifts in population demographics that may affect connectivity rates. Additionally, the impact of climate change on infrastructure and water resources could also influence future connectivity rates.
