This study has been focused on the commonly used anti-cancer drugs (ACDs) in Turkey terms of environmental toxicity, behaviors sewage treatment plants (STPs), biodegradability and physicochemical properties. For this purpose, EPI Suite, estimation programme, by employing BCFWIN, KOWWIN, KOCWIN, HENRYWIN, AEROWIN, ECOSAR, BIOWIN, STPWIN suites. Among 13 selected ACDs, Tamoxifen found as most ris...