For National and International Organizations
- International Association of GeoChemistry, council member, chair of the Geochemistry of Earth Surface working group, 10/2024-.
- Henry Darcy Distinguished Lecturer, Groundwater Foundation, 2021-22
- Proposal review panelist: NSF 2023, 2021-22, 2019; NASA, 2019.
- Editorship: co-Executive Editor, Ground Water, 2022-2024; Associate Editor, Geochimica et Cosmochimica Acta, 2005-2021