I phoned Jersey Tourism to find out what times the fountains i was planning to use turned on, the woman i spoke to told me that the last information they were given on them was that they were turned on from May through to September from 10am - 6pm. She then told me that it is the Jersey Waterboard Enterprise that deal with them, and gave me their number. I phoned them and the lady i spoke to there told me they are waiting on a part, so she took down my number and told me she would give me a ring when they know more.
This has given me a problem i didn't think i would get! I now need to re-think my fountain idea. I will wait until the lady i spoke to at the Waterboard to phone me back, and depending on what she says about when they will get the part in place, i will see if i need to re-think where to film.