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anicol Feb 04, 2020 04:01 PM
Pollution from diffuse sources
Concerning the pollution of surfaces water, you distinguish point sources et diffuse sources. My question concerns diffuse sources.
As the seas and the rivers have been considered in the past as natural dust collector, people used to get rid of their wastes in the rivers : rotten fruit production, wastes, trashes, car battery, etc. For example, in the past, the green algae have proliferated on the french coasts because of the fertilizers used in agriculture. Perhaps there is no pentachlorobenzene and no trifluralin in some rivers, but plastic, metallic trashes and fertilizers (which change the natural ecosystem). How to evaluate that pollution from diffuse sources ? (perhaps you give these data but I didn't understand because of the weakness of my knowledges in Chemistry : what are the chemical elements in a fertilizer, nitrates ??? in that case, sorry to have ask a stupid question)
Replies (3)
EEA Feb 06, 2020 09:20 AM
Dear Ms. A. Nicol,

Thank you for contacting the European Environment Agency (EEA).
Your request was forwarded to our experts and we are awaiting their feedbacks.

Thank you for your patience.

With kind regards,
EEA Enquiry Service
EEA Feb 14, 2020 02:54 PM
Dear Ms. A. Nicol,

The EEA uses the following definition for 'diffuse sources': pollution from widespread activities with no specific point of discharge, such as losses from natural areas and agricultural land, losses from paved areas, etc.

For further references, you may wish to look into the EEA's report on 'Source apportionment of nitrogen and phosphorus inputs into the aquatic environment' ( and 'Guidance Document No 28 on the Preparation of an Inventory of Emissions, Discharges and Losses of Priority and Priority Hazardous Substances' ([…]/details).

We hope this information may be useful to you.

Kind regards,
EEA Enquiry Service
Mike May 09, 2020 04:17 PM
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