A common problem for me. At certain angles to the sun water turns a dark unnatural blue colour. Filters etc don't appear to make a lot of difference.
Over the years, I have tried many editing remedies but can't really find anything better than a little tweak of the Blue Channel using Curves; and sometimes a tad of Red increase.
Using the Selective Colour control and very slightly adjusting the CMYK Neutrals also works sometimes - but I am getting a bit out of my depth now.
Curves plus a very tiny twist of Selective Colur can be beneficial on difficult photos.
I'm using Serif Photo Plus X2, a mid range editing programme.
So how do other people deal with this frequent problem?
Example of typical problem photo attached, but at least in this case the main subject isn't going to be badly affected by the 'cure'.