Steve, perhaps I have read it wrong. But if you click on each link, it seems quite clear. I checked on other beaches, in different areas. From what I can see, Calis seems to be the worst readings, though obviously I did not check the whole of Turkey, just checked against Oludeniz, Marmaris and the peninsula, Kalkan area.
The readings from Hillside are ok, though you could argue the current is taking it away from there..