Although Japan's water treatment market is mature and expected to achieve stable growth, the market structure could change in 5 to 10 years with technological innovation and the introduction of new business models.
Japan's water treatment market exceeded approximately ¥2 trillion as of 2023, with demand supported by measures to address aging water and sewerage infrastructure, tighter wastewater regulations and overseas expansion. Although the projected annual growth rate is modest despite population decline, the market is expected to remain stable while continuing to grow.
The advancement of digital technology is one factor expected to drive future growth. IoT sensors and AI-based water-quality monitoring and predictive maintenance can reduce operating costs, while the industry is moving from conventional equipment sales to business models combining services with resource recovery. This is expected to promote adoption among SMEs and in emerging markets, although disparities could also arise from differences in the pace of technological innovation.
By segment, demand is increasing for ultrapure and high-purity water used in semiconductor manufacturing, as well as for advanced wastewater treatment and membrane filtration. Replacement demand from municipalities and industry, phased replacement models and long-term operation and maintenance contracts are supporting market growth, while new technologies such as energy efficiency improvements, resource recovery and reclaimed-water use are becoming sources of competitive strength.