After the American Civil War, public health advocates called on the government to provide more public space-a swimming pool known as a floating pond was born. At that time, the water was clean and people could bathe directly in the river. But with industrialization and factories discharging more pollution into the river, the government eventually had to close most of the swimming pools. Even the remaining floating ponds have shifted from directly into the river in the past to closing the floodgates to introduce pure water from the outside.
wrong?
Most of the floating ponds are forced to close because of environmental pollution.