Oxygen consuming substances in European rivers
Indicator Assessment
Prod-ID:
IND-20-en
Also known as:
CSI 019
,
WAT 002
expired
Created 06 Nov 2018
Last modified 03 Dec 2019
22
min read
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Topics:
Water and marine environment
,
This page was archived on 03 Dec 2019 with reason:
Other
(New version data-and-maps/indicators/oxygen-consuming-substances-in-rivers/oxygen-consuming-substances-in-rivers-9 was published)
Oxygen consuming substances steadily decreased in Europe’s rivers between 1992 and 2015.
On average, the biochemical oxygen demand (BOD) fell to 51 % of the 1992 level.
Ammonium concentrations decreased even more substantially, down to 19 % of the 1992 level.
This decrease in BOD and ammonium concentrations is mainly because of general improvements in waste water treatment.
Key messages
- Oxygen consuming substances steadily decreased in Europe’s rivers between 1992 and 2015.
- On average, the biochemical oxygen demand (BOD) fell to 51 % of the 1992 level.
- Ammonium concentrations decreased even more substantially, down to 19 % of the 1992 level.
- This decrease in BOD and ammonium concentrations is mainly because of general improvements in waste water treatment.