i have 2 water dragons, need to no what other type lizards i can keep together with them?

Answers:
Generally, it's better to keep species separate. Especially lizards. Lizards are not domesticated at all, so think back to how they would be in the wild. They never share territory with any other lizard species, they see them as either predators, prey or rivals for food, and space.
There are also heat, humidity, food and light to consider. Each species will have different habitat requirements that must be met for optimum health.
There are also sickness that could potentially pass back and forth, which is bad news.
Unless you are thinking of doing something on the scale of a zoo exhibit, with acres of land, waterfalls and everything, where you are recreating the ENTIRE habitat and it's inhabitants, then, keep the species in separate enclosures.
Good Luck

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It is always best to keep lizards seperate from each other but in the right enclosure.preferably a very large one, i have kept chinese water dragons with other tropical lizards. Although not from Asia, as your water dragon is (unless it is the Austrailian species, but those are not as common), you can keep them with basilisk species as these have very similar requirements. They are all arboreal (climb trees).It would be a better idea to keep some species that are terrestrial ( live on the ground) if the cage has enough room..make sure the species is not too much larger or smaller since water dragons will eat smaller lizards. I have kept basilisks, sailfin dragons, and green iguanas with water dragons but all lizards are different and stress out easily, not to mention they can spead disease quickly to each other, so monitor them and dont take any chances stressing your pet to death!