1. Ben Gurion Univ. of the Negev, BIDR, Zuckerberg Institute for Water Research; Dep. of Environmental Hydrology and Microbiology; Sede Boqer Campus Negev 84990 Israel
2. Institute of Soils, Water and Environmental Sciences, Agriculture Research Organization-Volcani Center; POB 6 Bet Dagan 50250 Israel
3. Hebrew Univ. of Jerusalem, Casali Center of Applied Chemistry. Institute of Chemistry; Edmond J. Safra Campus-Givat Ram Jerusalem 9190401 Israel
4. Israel Water Authority; National Water Monitoring Laboratory; Bet Dagan 50250 Israel