-Interesting facts about water you probably don't know
-What you should know about Singapore water ways
by Waterways Watch Society and Singapore International Foundation
9. Starting in the 1880s, there was heavy traffic on the Singapore River due to rapid urbanization and expanding trade. At the same time, it brought in water pollution caused by the disposal of garbage, sewage and other by-products of industries located along the river's banks.
About 70% of the planet covered with water but 97% of this water is in the oceans unusable for drinking About 3% of the planet's water is fresh, but 1.6% is locked up in the polar ice caps and glaciers, another 0.36% is found underground in aquifers and wells Only about 0.036% of the planet's total water supply is found in lakes and rivers The rest of the water on the planet is either: floating in the air as clouds and water vapor, or is locked up in plants and animals