The Development of Pastas started in the spring of 2016 at the TU Delft and Artesia in the Netherlands. Researchers at the TU Delft required a flexible framework that could support future research on time series analysis of groundwater data. Consulting company Artesia on the other hand, needed a tool that allowed them to perform more complex analyses in a scripted environment. As such, Pastas was developed under a fruitful partnership between academia and private industry, a collaboration that continues to this day.
Python was chosen as the programming language for Pastas, being a flexible and open-source language that allows for quick prototyping. Moreover, many if not most hydrologists learn Python during their education, making the software available to many. From the start, all code was made completely open-source under MIT license, embracing open science and FAIR (Findability, Accessibility, Interoperability, and Reuse) data practices.
International use of Pastas and research grew substantially after the publication of the Pastas article in the international journal Groundwater [Collenteur et al., 2019]. In addition, the University of Graz in Austria and now the Swiss research institute Eawag employed one of the maintainers, further pushing the international use and development of Pastas. Since its inception, Pastas has been applied in over a dozen countries worldwide. Supporting international research continues to be an important goal of Pastas. For a list of peer-reviewed publications using Pastas please see the Publications page.
In february 2023, Pastas version 1.0 was released, the celebration of 7 years of research and development of Pastas. Pastas was already operational for a couple of years, but the a lot of features were still changing. In Pastas 1.0 focus lies on Pastas main goal: time series analysis on groundwater levels. This was done by improving the documentation, removing unused features, unifying the API and relying more on high quality Python packages such as Pandas, NumPy and Numba. With version 1.0, Pastas is ready for further future developments!