To cite package ‘wasserportal’ in publications use:

  Sonnenberg H, Rustler M (2026). _wasserportal: R Package with
  Functions for Scraping Data of Wasserportal Berlin_. R package
  version 0.5.0, <https://github.com/kwb-r/wasserportal>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {wasserportal: R Package with Functions for Scraping Data of Wasserportal
Berlin},
    author = {Hauke Sonnenberg and Michael Rustler},
    year = {2026},
    note = {R package version 0.5.0},
    url = {https://github.com/kwb-r/wasserportal},
  }