Most excreta and wastewater are discharged untreated or semi-treated into local drains or water bodies, causing massive environmental pollution.

Electronics) has discharged untreated industrial effluents and population has grown at a faster rate than the rest of Mexico.

Spent liquor was discharged untreated into the Kapuskasing River.

Industries in the area were discharging as much sulphur dioxide as all of west Germany put together, and two-thirds of water from factories and residual sewage were discharged untreated.

Most of this is discharged untreated into the rivers and streams on which forest people and wildlife depend.

For two and a half centuries prior to this project, raw sewage was discharged untreated directly into Halifax Harbour.

The resulting combined flow was discharged largely untreated into the river downstream of Bucharest until the completion of the Glina wastewater treatment plant in 2011.

Until 1925, raw sewage from the city of Los Angeles was discharged untreated directly into Santa Monica Bay in the region of today's Hyperion Treatment Plant.

Concerning municipal wastewater, the bulk of collected sewage is discharged untreated and constitutes a major source of pollution to groundwater and a risk to public health.

In developing countries most wastewater is still discharged untreated into the environment.