[RIVM]飲用に使われる地下水の傾向解析(2000 - 2018) Trend analysis for groundwater quality of drinking water extractions (2000 - 2018) 02-06-2020 https://www.rivm.nl/publicaties/trendanalyse-grondwaterkwaliteit-van-drinkwaterwinningen-2000-2…