water pollution Nowadays, water pollution is a problem of environment. River/lakes and even oceans all over the world are becoming polluted by garbage and dangerous chemicals. NO.1, if we think about how to deal with this problem, we should first know the reason why cause the problem. Industrial wastewater, daily life sewage and pesticide pollution are man-made pollution. These make the water harmful. NO.2, the impact of water pollution. Sewage help algae grow. The lake and river can not balance. That make body unhealthy. For industry, it affect the quality of products. NO.3, reduce water pollution. We can spread the environmentalist message. Dont put harmful substances into water. Build sewage system.