Good quality water is used to help push out waste and polluted water, polluted water help lose lots of fluids to try to fix the problem waste polluted water by using water from the river and lots of foul water from the Canal to take a little dirt. Keep clean up canals as well.
The use of good quality water, wastewater and help drive away and provides wastewater dilution. To fix sewage problems Using a dilute river water, wastewater, and carry dirt from the canals. Make canal clean-up as well.
The use of water quality, help push the operas waste away and help dilute water pollution. To solve the problem of operas. Using water from the River diluted water pollution, and induce the dirt from the canal.