Water Quality Models for Drinking Water Treatment Processes R package tidywater version 0.10.0 Provides multiple water chemistry-based models and published empirical models in one standard format. As many models have been included as possible, however, users should be aware that models have varying degrees of accuracy and applicability. To learn more, read the references provided below for the models implemented. Functions can be chained together to model a complete treatment process and are designed to work in a 'tidyverse' workflow. Models are primarily based on these sources: Benjamin, M. M. (2002, ISBN:147862308X), Crittenden, J. C., Trussell, R., Hand, D., Howe, J. K., & Tchobanoglous, G., Borchardt, J. H. (2012, ISBN:9781118131473), USEPA. (2001) <https://www.epa.gov/sites/default/files/2017-03/documents/wtp_model_v._2.0_manual_508.pdf>. Software Depends: R (>= 4.1) Imports: dplyr, tidyr, forcats, knitr, ggplot2, ggrepel, magrittr, methods, rlang, deSolve, lifecycle Suggests: rmarkdown, purrr, testthat (>= 3.0.0) Sierra Johnson <sjohnson2@brwncald.com> Comprehensive R Archive Network (CRAN) Sierra Johnson [aut, cre], Libby McKenna [aut], Riley Mulhern [aut] (ORCID: <https://orcid.org/0000-0001-6293-3672>), Chris Corwin [aut] (ORCID: <https://orcid.org/0000-0002-9462-0352>), Rachel Merrifield [ctb], Mayuri Namasivayam [ctb], Phoebe Chen [ctb], Jiaming Yuan [ctb], USEPA [cph] (Copyright holder of included TELSS fragments (dissolve_pb function)), Brown and Caldwell [fnd, cph] Apache License (>= 2) MIT + file LICENSE (https://CRAN.R-project.org/package=tidywater/LICENSE) 2025-08-24 application/tgz https://CRAN.R-project.org/package=tidywater doi:10.32614/CRAN.package.tidywater