Good luck with your kitty , I have found that after about the second time I have to shove a pill or stick a needle they catch on and make it very hard for me to find them.
Maybe your kitty would drink a bit more if you added some tuna juice to the water , just a tablespoon drained from tuna in 1/2 cup water works on mine.

That's a terrific idea! I'm definitely going to try it. I am beginning to wonder if this is my vet's way of saying "we don't want you as a customer anymore." I'm caring for 19 cats (all adopted/strays, all neutered/spayed) and I wonder if the vet is getting tired of dealing with me.

Nineteen is a lot , If I were a vet I would think $ and job security
My four were all rescued from certain death and adopted.

What you are doing is a good thing don't get discouraged

The weird thing is, I'm not what I consider a "cat person." I like them, I take care of them, I consider them friends, but I don't like "cat things" around the house...my friends/family are always giving me cat mugs, socks, towels, etc. and they all go to Goodwill. *LOL* I guess I should be thankful it's not feral horses or cows or buffalos or something....

When you have 19 of the real thing who needs imitations .