I have a chameleon in captivity

Chameleons don't recognize standing water, so a water dish is pointless. You need drip system, or mist system where they get simulated rain at least twice daily, depending on the species.

For a pet like a chameleon I'd definately do some research about caring for them before getting one. They need a large cage with plenty of room to roam, and clean water and fresh food available daily. A waterfall could work, but I'd make sure you have a bowl with fresh water replaced every day too to keep it healthy!

Unfortunately too many people will go out and buy on impulse a pet that they are not properly prepared to care for. I raise tropical fishes and I see many people that kill their fish with kindness instead of knowing what the fish need they furnish that they need something else and will kill then that ways. Others will put fish in with other fish that do not get along and one will get beaten up and stressed out or they will put big fish in with small fish that are food for the larger fish. They then "punish" the bigger fish for something that comes naturally to the fish.

Yeah, the waterfall was a waste of money as chameleons do not drink from a bowl or anything like that. I used to use a WD40 bottle (not used!!) with dechlorinated water and mist the tank for about 5 minutes twice per day and he would lick the drops of the leaves (Veiled Chameleon by the way). Anyways, he ended up becoming too high maintenance and sadly I did not have the time to care for him properly or to go out and buy crickets for him regularly :-\ So I sold him and the entire setup for $150 shipped. I HIGHLY recommend that you do A LOT of research BEFORE purchasing ANY reptile or other EXOTIC pet ;-) But over all have fun with your new pet! They truly are amazing lizards :-) Rated +.