We are currently in Turkey, cruising from Finike to Kusadasi. Been in Turkey almost a year.  Now between Mamaris and Didim. Yes, no dumping of blackwater, but pump out facilities are ubiquitous. Never had an issue with Grey water discharge. If it were an issue, all sailing in Turkey would cease. The thousands of charter boats would be scrapped. The Noonsite article is grossly exaggerated  

BTW, Bill is spot on. Turkey is in the top 5 cruising grounds on the planet.