Japan’s Pollution Experience: Bringing Water Back to Life Part 1 of 4

 Untreated discharges from factories and homes polluted rivers and lakes that became so contaminated that even mosquito could not survive…

Both people and factories learned that controlling pollution at the sources is the best way of cleaning water. Freshwater fish slowly returned to the Tama river in the Tokyo Metropolitan area. But there are still problems like eutrophication of lakes, which shows how hard it is to restore aquatic ecosystems once polluted.