Contamination is conquerable!

There are some lakes which conquered the eutrophication problem in an advanced nation. Especially water resources carry out drinking water and the water for production, and have it which it is important, and should also be called human beings' lifeline if left by the problem lost.

Measure which we can do

There are many lakes which conquered contamination of a lake. All of those lakes were realized just because there was cooperation of many residents. However, the lake beyond it is polluted now. If drainage from the household, detergent, etc. which are one of the factors of contamination are taken care of, I will think that contamination of a lake changes