抄録
Water contamination in generally divided into two kinds, excremental Contamination and one caused by toxious substances. From these contamination, mass infections diseases and toxications are likely to break out.
In order to control aud water pollution, we now have “Basic Law. for Environmental Pollution Control” “Water Pollution Control Law”, which regulate standards of environment and water quality. Both standards limit allowable quantity by ingredient, and we must recognize their sanitary importance.
The general problem sewage disposal can be solved by improvement of coagulants, treatment of actived carbons, sludge treatment, and other procedures.
