Johkasou Wastewater Treatment
Over 1,000,000 units supplied
across 50 years

Protecting the global environment for future generations through Japanese water treatment technology (Johkasou).
NIKKO is a Johkasou manufacturer with a proud history, having provided over 1,000,000 Johkasou units across 50 years within Japan.




NIKKO's Johkasou are widely compatible,
from household use to apartment building and industrial uses.


Our diverse lineup makes selection according to the installation requirement possible.Johkasou selection varies according to inflow conditions and building scale.

What is a Johkasou ?