The actress in the video is Angela Stone, and she *always* squirts with such volume and force. As to whether its real or not, I can't tell you. But, having been with a squirter in my time, I can tell you that the intensity and volume does vary incredibly..
You can see Angela and a variety of other squirters at Elegant Angel - William H is pretty much the premier producer for videos of this genre (which I must say, are a personal fav of mine).
Angela appears in the video "The Great American Squirt Off" competing with the likes of Cytherea and Flower Tucci, Lexi Love, Kat and Felony. Angela wins the distance squirt off between herself, Flower and Cytherea by shooting about 15 feet. Even if it was pee, not female squirting, I think that is an amazing feat....