Sperm waterWhile it is hard to rank rivers and lakes around the world in terms of who is THE worst, there are a few that stand out in the crowd. Pollutants like industrial waste, sewage runoff, overpopulation and agriculture discharges all make for quite a toxic brew. When you count in the fact that many of these major rivers and lakes supply food to nearby major population centers then they are having an even greater effect than as simply some polluted body of water in the middle of nowhere.

Spoiler: Walang Pasig River.

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