Empoleon doesn't learn waterfall unless you teach it with an HM.
No, Pelipper cannot learn the move Waterfall in the Pokémon games. Waterfall is generally a move associated with Water-type Pokémon but is not part of Pelipper's move pool. Pelipper can learn various Water-type moves, but Waterfall is not one of them.
You can teach Tentacool the move Waterfall anytime. Waterfall is an HM, not a move gained by reaching a certain level.
squirtlewarturtleblastoisepsyduckgolduckpoliwagpoliwhirlpoliwrathtentacooltentacruelseeldewgonghorseaseadragoldeen seakingstaryustarmiegyradoselaprasvaporeonomanyteomasterkabutokabutopsmewchinchoulanturnmarillazumarillpolitoedquagsireslowkingqwillfishremoraidoctillareekingdrasuicune My Lapras and Gyrados Know the move waterfall
Most water type Pokemon can learn the move Waterfall.
no
it is hidden in mt.coronet in a cave you need hidden move "waterfall" to get it though
Scyther learns Vacuum Wave as its base move. This is only in Platinum
its a move your Pokemon might learn
no just like all HM's u need to obtain them you get waterfall the same way as diamond+pearl talk to jasmin on the beach at sunnyshore city.
chingling can't learn any hms.
The Move Tutor can teach Luxray Superpower.
You can find it at Route 18. Just fly to Nuvema Town and go to route 1, past the patch of grass, and turn left and when you get to the water make sure you have surf then swim across and eventually you will get to Route 18 if you keep following the path and HM Waterfall will be somewhere around there.