National Groundwater quality monitoring network ; analysis in 1990; The results of the Province of Overijssel
Landelijk meetnet grondwaterkwaliteit, analyseresultaten bemonstering 1990 ; Provincie Overijssel
RIVM Report 728517065
The Dutch groundwater quality monitoring network includes 390 monitoring points. The frequency of sampling is once a year. The objectives of the network are: - to make an inventory of the present quality in relation to soil use, type of soil and hydrogeological conditions ; - to distinguish long term changes in quality ; - to provide data for quality control and groundwater management ; - to indicate the extent of human influence on groundwater quality. This report gives the results of analysis in 1990 from 38 monitoring points in the province of Overijssel.