Domestic wastewater from Hitachi Construction Machinery’s Kasumigaura Works is treated and turned into clean water, after which it is released into rice field irrigation ditches.
In April 2012, the clear spring water activities emerged out of a single comment from the general manager of the Component Product Dept. which was “I want to see if fish can live in this clean water.”
Employees were asked to submit names for the small pond. The name Kasumigaura Seiryusen (clear spring water pond) was chosen. Goldfish and the Japanese rice fish (medaka), which live in the pond, had babies, giving birth to a whole new ecosystem. During break time, some employees come to look at the spring and see how the fish are doing.