Hi! it is very hot thesedays. I often feel like i want to go to the sea to swim. However, many sea in japan are not clean. My home town is in Shiga. There are no sea around Shiga but there is lake Biwa in there. Lake Biwa is the biggest lake in japan. My house is far from laek Biwa so i don't go there often but sometimes I go there. Because there is lake Biwa, my prefecture work hard to clean the water of lake. It is said that water from house is one of the cause of water pollution. Therefore, people encouraged us to do something to stop pollute water. For example, it is bad for water to throw away(?) used oil to drain. Therefore, community try to gather used oil and they made soap from oil. Also poeple recommend us not to throw away the water which was used to wash rice before boil to drain. Instead of doing this, they reccomend us to use this water to flower or foliage plant. It is not easy to do this because it is very easy to throw them directly to drain. However, this small action make water clean!