| Subject | English | Spanish |
| UN, ecol. | downwind source of pollution | fuente de contaminación a sotavento |
| environ. | source of pollution | fuentes de contaminación |
| environ. | source of pollution The place, places or areas from where a pollutant is released into the atmosphere or water, or where noise is generated. A source can be classified as point source, i.e. a large individual generator of pollution, an area source, or a line source, e.g. vehicle emissions and noise | fuentes de contaminación |