In this study the changes in the quality of groundwater are described on the basis of material collected at some groundwater extraction plants situated mainly in urban areas. The causes of the marked increase in the content of dissolved solids are evaluated from the 1960s onwards.
Deterioration in the Water Quality of Groundwater in Some Municipal Water Extraction Plants in Finland
Pertti Lahermo, Jouko Parviainen; Deterioration in the Water Quality of Groundwater in Some Municipal Water Extraction Plants in Finland. Hydrology Research 1 April 1979; 10 (2-3): 171–190. doi: https://doi.org/10.2166/nh.1979.0020
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