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| Subject | English | Norwegian Bokmål |
| environ. | fresh water pollution The direct or indirect human alteration of the biological, physical, chemical or radiological integrity of freshwater | forurensning av ferskvann |
| environ. | waste water pollution The impairment of the quality of some medium due to the introduction of spent or used water from a community or industry | forurensning fra avløpsvann |
| environ. | water pollution The manmade or man-induced alteration of the chemical, physical, biological and radiological integrity of water | vannforurensning |
| environ. | water pollution prevention Precautionary measures, actions or installations implemented to avert or hinder human-made or human-induced alteration of the physical, biological, chemical and radiological integrity of water | vern mot vannforurensning |