Plant sewage is treated by chemical neutralization and released into outlets. To enhance the environmental protection of treated sewage, we use a closed sewage-treatment system. This system concentrates chemically neutralized sewage and then evaporates it completely using a dryer.

Moisture that evaporates into the atmosphere is as clean as or cleaner than underground water. With this solution, no plant sewage is released into rivers, avoiding impact to the environment. This system was introduced into ROHM Fukuoka, REPI (ROHM Electronics Philippines, Inc.) and RMPI (ROHM Mechatech Philippines, Inc.) production sites.
Close to REPI and RMPI is Lake Laguna, the largest lake in the Philippines. Managing the water quality of Lake Laguna is a major issue in the Philippines' environmental administration. In order to prevent future damage, we introduced a closed treatment system in the Philippines. This is just one example of how ROHM's environmental measures domestically and abroad are very similar.

ROHM considers it important -- both in Japan and abroad -- to adequately understand local characteristics and measures necessary to coexist with the natural environment.