We have pretty good water.. just make sure you do NOT go in after a rain event! HUGE difference! Check it out inside pdf below. Great Charts. BTW: Albany’s Hudson River water is worse than NYC.
RIverkeeper is doing a great job testing local NYC waterways. Look at this PDF: RvK_How-Is-the-Water_2006-10 to see charts on your favorite spots on the Hudson and NYC harbor area. LOTS OF DATA! ENJOY!

Hudson River Pollution