By not hacking wastewater that does not contain sewage treatment or wastewater and reduce the illicit release of dirt or disposal of sewage or waste into the river and canals.
By not illegal discharge wastewater without treatment. Or reduce contamination of waste water. Or illegally discharge sewage Garbage dumped into rivers or canals.
By not smuggle let wastewater without treatment. Or reduce contamination of wastewater treatment. Or illegally release sewage or waste into the river, ditch canal.