I just noticed this is from Cedar/Tolt - so you're local to me
Yes Martin, it is reported as ug/ml. I wouldn't worry about the iron, I've never tasted a local homebrew with metallic off-flavor that didn't have another explanation.
Also, your water is never unbalanced, just the reported numbers. They don't include all of the useful numbers in the water report, pH? Nitrate? But that is enough for you to work with, I just wouldn't worry about it much. I've had my water tested by Ward Labs and Bru'n Water still says it's out of balance, but my water is also high in manganese according to my supplier (Union Hill Water Association) which is not included in either Bru'n Water or Ward Labs.
So RDWHAHB about if it is "balanced" or not. You can go with the report from SPU or get it tested yourself, it's up to you.
If you don't feel like sending a sample to Ward Labs, I'm sure there are a lot of people around here (geographically, not interwebs) on Tolt water that have had it done. Are you in a club? Your water should be similar to your club members'. If not let me know, I can probably track down a report or two.