Let us introduce NIHON GENRYO.

We have a variety of products and services, including Filter Media, which we have continued to manufacture and sell since our founding,
water treatment apparatus equipped with our original technologies,
and construction technology backed by considerable experience and knowledge as an advocate of Filter Rehabilitation Work.


Filter Media

Since 1945, we have been supporting the Japan water supply business as a pioneer in the manufacture of filter media With the experience and achievements we have built up as a specialized manufacturer of filter media, NIHON GENRYO’s filter media are used in more than 80% of the water purification plants in Japan. We are also focusing on the development of special filtration materials to purify “water”, which is said to be unique.


Water Treatment System

NIHON GENRYO has developed various water treatment equipment as a manufacturing company, taking advantage of its expertise in manufacturing filter sand work and rehabilitation work.
The SIPHON series, which incorporates "SIPHON cleaning technology," an original technology of NIHON GENRYO, is evolving day by day to contribute to solving environmental and water problems.


Partners Products

NIHON GENRYO is the Xylem Official Distributer in Japan and handles overseas products such as Leopold resin blocks, Flygt submersible pumps, WEDECO ultraviolet systems and KSH strainers.