Associate Editor, Journal of Hydrology (Elsevier), 2013–2022.

Guest Editor, Special Issue of Journal of Hazardous Materials (Elsevier), 2013.

Chair/Co-Chair of the symposium/session.

• • Indo-Australian workshop on Arsenic in Groundwater, New Delhi, India, 2012.

  • 4th International Congress on Arsenic in the Environment, Cairns, Australia, 2012.

Member of the Scientific Committee on International Drilling to Recover Aquifer Sands (IDRAs), International Continental Scientific Drilling Program.

Invited reviewer of proposals

• • Qatar National Research Foundation (QNRF).

  • The Research Council (TRC) of Oman.

Peer reviewed articles for many journals.