Other than the CE, and the invaluable experience of learning, I doubt there is a lot of benefit to these certifications.
I've never heard of the Power Point one, so if I were hiring, I would wonder why this guy is listing his CE on his resume, like who cares? As for the APHA one, I respect APHA programs, but I think that is one of the last things a hiring employer is going to be looking at......maybe if you were completely identical in all other respects with the other person they were considering to hire, then that would give you the edge, but that is unlikely to be the case.