Results of two sampling campaigns conducted in Kwale County Kenya in March and June 2016 by GHS/UPC as part of the Gro for GooD project. Water samples from over 79 groundwater and 6 surface water (SW) locations were analysed for major ions, stable isotopes, selected trace constituents, electrical conductivity, nitrates, ammonia, pH, DO (Dissolved Oxygen), Eh (oxidation / reduction potential), Temperature, TOC (Total Organic Carbon) and field alkalinity. Most locations were sampled in both March (dry season) and June (wet season). Geology at each location recorded as follows: P - Pliocene Sands, Pls - Pleistocene Sands, Plc - Pleistocene corals. Reference: First step to understand the importance of new deep aquifer pumping regime in groundwater system in a developing country, Kwale, Kenya; Ferrer et al, Geophysical Research Abstracts, Vol. 18, EGU2016-16969, 2016; http://meetingorganizer.copernicus.org/EGU2016/EGU2016-16969.pdf; https://upgro.files.wordpress.com/2015/09/egu16_groforgood_v1.pdf UPC - The Departement of Civil Enginyering de la Universitat Politecnica de Catalunya GHS - Grupo de Hidrologia Subterranea