Variables: dissolved_oygen dissolved_organic_carbon total_organic_carbon concentration electric_conductivity pH Keywords: MetFrag micropollutants monitoring land use Substances: 1-Propanesulfonate (KCXFHTAICRTXLI-UHFFFAOYSA-N) 1-Naphthylacetic acid (PRPINYUDVPFIRX-UHFFFAOYSA-N)