Coastal marine waters quality monitoring in the southern section of the Burgas Bay, Bulgarian Black Sea coast. Monitoring was carried out in the period 07.2009-06.2011 by the Laboratory of Marine Ecology, IBER-BAS. Dataset already available in the Emodnet Chemistry portal under the following link: https://cdi-chemistry.seadatanet.org/search/welcome.php?query=2228&query_code={D2062C8A-7576-4184-8C24-6E0DE4E1AD15}