I don't think I got a good enough look to actually identify it. I mostly saw its head.
It was very glossy black, slightly wider than the neck, with a squarish nose. (Does that make sense? It wasn't smooth and round like a black racers's nose, or triangular like a rattlesnake.) I don't think it had markings, but with the sun shining on it and the hose wound around it, it may have. I think the eyes were round and solid black, but I'm not positive. I didn't see the belly at all.
Sorry I'm not more help with a description. The last time we had a snake in the yard it started striking at my two-year-old, so I kinda freaked, grabbed the kids, and ran. I'm just relieved that it's *possible* the snake is non-venomous. We had two black racers at our previous home that kept all the others away so I didn't worry about it.
You've already helped a lot, thank you.