At Sony Semiconductor Manufacturing Corporation's Kumamoto Technology Center (Kumamoto TEC), a large volume of water (groundwater) is used in semiconductor production. Kumamoto area, home to Kumamoto TEC, has always been blessed with abundant groundwater resources. However, the decline in groundwater has been a deep concern in recent years, and has been attributed to a decrease in the area of land used for rice paddy cultivation and an increase in the land used for residential purposes. Kumamoto TEC recognizes the importance of groundwater as natural capital, and is involved in continuous efforts to recharge* groundwater using neighboring paddies in cooperation with local environmental NGOs as part of its responsibility as a local business. From May through October, Kumamoto TEC uses its water facilities to help fill unused rice paddies with river water, thus allowing the extra water to penetrate into the soil and ultimately replenish the aquifer.