REWAB parameter list

The REWAB parameter list is a controlled vocabulary used within the Dutch REWAB system (REgistratie WAterkwaliteitsgegevens Bedrijven) for the standardized registration of drinking‑water quality data. The list defines water‑quality parameters relevant to drinking‑water production and distribution, including chemical substances, microbiological indicators and physical properties. Each parameter is uniquely identified and linked where applicable to external standards (e.g. SIKB identifiers, CAS numbers), units of measurement and conditions of analysis. This ensures unambiguous interpretation of measurements across laboratories, utilities and research projects. From a research perspective, the parameter list supports reproducible analysis of long‑term monitoring data, integration of datasets from multiple drinking‑water companies, and alignment between regulatory monitoring and scientific studies. The list is particularly suited for researchers working on drinking‑water quality, treatment processes, emerging contaminants, and compliance assessment, and can be used as a reference catalogue when querying or harmonising REWAB data extracts. Since its inception in 1992, REWAB has used a centrally maintained parameter list, enabling long‑term consistency and comparability of drinking‑water quality data.