"Monitoring Of The Water Quality Of Swimming Beaches Of The Central Macedonia Region For The Period 2025-2029 & Register Of Identities Of New Bathing Beaches And Updating Of Identities Of Existing Beaches" (Sub-Project 2 / Section 1), And "Signs Of The Quality Of Bathing Beaches Of The Central Macedonia Region" (Sub-Project 3 / Department 2) With Ops Code 6006528