Dave's reply, copied above, started to hit the nail on the head. First off, as I am unsure of your exact reasons for making water available so often, I can only offer that such frequent watering opportunities is not the norm in the wild. As Dave says, twice a day is more than adequate, even in the lowest humidity scenarios.
So, what's the harm in 4-5 wettings per day ? What's the harm in misters (or foggers) ? Both are to be avoided. Chameleons, and their environs, need to dry out well every day, and especially so at night when the chameleon is sedentary. Sometimes this requires the use of a fan to create air circulation, but is mentioned in many websites by keepers/breeders who have dealt with problems associated with too much moisture. Besides being unnatural (it rains in Madagascar, and doesn't fog all that much, much less mist), it causes two frequent and unnatural issues. The first is an increase in respiratory borne infections, or infections that thrive on air too moisture-laden. The second is almost completely unnatural to wild chameleons, but not uncommon in many captive husbandry situations ... skin fungus. It can attack many parts of their skin, and cause significant problems on the bottoms of their feet. It is for this reason that perches need to be a natural product that wicks away moisture, and not a plastic of other non-absorbant material. Drippers are and always have been the best means of delivering drinking water. Your most common pet chameleons, veileds and panthers, deal with humidities lower than 70% all the time, and often lower than 50%. Twice-a-day access to drinkable water will address the chameleon's wildest needs.
Anyone out there with a waterfall in their chameleon's cage ... LOL ... what were you thinking !!! Bacteria problems await you !! Looks pretty though, now doesn't it !
