In the Thebes – Tanagra – Malakasa basin, Eastern Central Greece,[32] which supports many industrial activities, concentrations of chromium (up to 80 μg/L Cr(VI)) and Inofyta (up to 53 μg/L Cr(VI) were found in the urban water supply of Oropos). Chromium(VI) concentrations ranging from 5 to 33 μg/L Cr(VI) were found in groundwater that is used for Thiva's water supply. Arsenic concentrations up to 34 μg/L along with chromium(VI) levels up to 40 μg/L were detected in Schimatari's water supply.