Do not litter and waste into the river canalsDo not release the chemical waste water Toxic substances into water sources.Waste water treatment of water prior to initial the vent or drain.
Do not litter and other waste into the river. No discharge of toxic chemicals into the water. Wastewater gross Before discharge into waterways or sewers.
No littering and various waste into the river not released wastewater, chemical toxins in various water purification into initially. Before releasing the water or sewer.