I just encountered this as well at map coords 041x071 (according to the dayzdb map). On the south side of the small creek, the 'walking in water' sound plays when you walk when you are clearly nowhere near the creak.

I have been dealing with this as well. Got hurt early one, vision became blurred, I got better, colors came back but blurred vision never cleared up. I didn't know about the video settings fix mentioned above but I unintentionally fixed it by crafting a gas lamp/canister and turned it on and off. Almost as if changing the local light properties 'reset' the blur settings to what it should be.