help with using water to produce hydrogen energy

yawie

Hi
I need a little help with understanding this process. I have heard it is really simple to produce energy from water using electricity powered from solar energy? How is this energy stored and distributed?
Does it have to be used in fuel cells?
Most importantly can dirty water be used to create this energy? Let's say water off the street with all the oil and tar and salt (during the winter)?

Any help would be great!

If anyone knows how to contact Rothman Technologies in Toronto that would be great too! Thanks in advance!

Yawie