On-site greywater treatment systems - influent and effluent quality

The dataset presented here consists of raw data on the quality of influent and effluent greywater from eight on-site greywater treatment systems situated in Södertälje municipality, Sweden. These on-site treatment systems included three types of commercially available package plants and one sand filter. The influent and effluent samples were taken as grab samples between August 2020 and December 2021 and analysed for organic material, nutrients, pathogens, anionic surfactants, salt and (for two of the eight on-site systems) microplastics. Supporting parameters, e.g. suspended solids and pH, are also included. Further, for microplastics, results from blank samples are included. This dataset was used to evaluate the treatment efficiency of the on-site greywater treatment systems and to assess the suitability of the treated water for reuse. See the attached documentation files. 1. Study_Description: This file includes the summary of the research study, data collection and the standard analytical methods used for analyzing different parameters. 2. Greywater Characteristics: The influent and effluent concentrations of all parameters analyzed during all sampling events.