In society at large water pollution is becoming a major issue. Many companies are bottling up water tables and leaving many ecosystems dry and dead. Nearly every city pumps in water to their system, defecates in it and then fills it with harsh chemicals to "clean" it. Then this water is pumped back into the local water source to be reintegrated, but not before the next city sucks in the water and repeats the same process. This poop loop as some call it, is in my opinion one of the biggest contributors to water pollution.