I couldn't wait so I purchased the K-2006C that's the one you want if you can't get Bens yet and yes you need a good kit although my Aqua Chem ($12.00) performs as well as my K-2006C but my AC doesn't have the range of my 2006C. I use my AC daily and my Taylor twice weekly. Further other's on the forum haven't found their AquaChem's to be as accurate so I'd go with the Taylor if not Ben's.

Obviously chlorine can't remove large organic objects. If you have "things" on the floor of your pool then vacuuming to waste is good but any removal method will work.

Right now you need chlorine chlorine chlorine and kill that demand. Handle pools in a linear manner, kill the chlorine demand first. Your test results show you need more so give it more and don't be shy this can take awhile. Please read Carl's post stickied on top here.

As for your drinking water hopefully you don't swim in it. I don't suspect it has the nitrogen load a pool has. But if you have any concerns call your public health department and find sources for testing!
hth,
Jo