Variables: dissolved_organic_carbon total_organic_carbon electric_conductivity pH Keywords: micropollutants high resolution mass spectrometry land use Substances: 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N) 5-Methylpyridine-3-carboxylic-acid (DJDHHXDFKSLEQY-UHFFFAOYSA-N)