How to use good quality water helped push out waste and polluted water, polluted water has lots of help. To resolve the problem by using waste water, polluted water from the river and lots of foul water from the Canal to take a little dirt. Keep clean up canals as well.
How to boost water quality, wastewater and allows water to dilute pollution. To fix sewage problems Using a dilute river water, wastewater, and carry dirt from the canals. Make canal clean-up as well.
How to use help push the water quality 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.