[VD10]
Nutrients in rivers
Assessments published: [ 2009 2013 2010 2007 ]
Graphs
Key message
The values ​​of biochemical oxygen demand, which is usually an indicator of organic pollution, have significantly decreased in Slovenia since 2005. Average levels of nitrate and orthophosphate, which are slightly above background levels, do not show significant changes in the period.
Definition

Graphs
Image VD10-1: Average annual concentration of nitrate in rivers (mg N / l) (indicative value for the natural state is 1 mg N / l)

Source: Standardised Database for Water Quality Monitoring, Environmental Agency of the Republic of Slovenia, 2009
Table


Image VD10-2: Average annual concentration of orthophosphate in the rivers (mg P / l) (indicative value for the natural state is 10 mg P / l)

Source: Standardised Database for Water Quality Monitoring, Environmental Agency of the Republic of Slovenia, 2009
Table


Image VD10-3: Average annual concentration of ammonia (mg N / l) (indicative value for the natural state is 15 mg N / l)

Source: Standardised Database for Water Quality Monitoring, Environmental Agency of the Republic of Slovenia, 2009
Table


Image VD10-4: Average annual value of biochemical oxygen demand - BOD5 (mg O 2 /l)

Source: Standardised Database for Water Quality Monitoring, Environmental Agency of the Republic of Slovenia, 2009
Table
Comment

Methodology

27 May 2009

Apology: Texts in English haven't been updated.

Polona Mihorko, Environmental Agency of the Republic of Slovenia