Hose Mania

I'm beginning to wonder if my son isn't some kind of obsessive compulsive.
He loves brooms and dustpans and seems to sweep stuff constantly. But when he's not sweeping, he's obsessing over taps and hoses.
We walk to our local playground daily and the five-minute stroll down takes a good ten these days because hose boy has to stop at every house and stand there pointing at the hose and/or tap in the front yard.
This bizarre behaviour is almost always accompanied by the sound effect "Ssshhhh!", as if making a water shooshing sound.
A quick bit of Googling and my mind's been slightly put at ease. According to two different parenting websites, this kind of compulsive behaviour is perfectly normal for a toddler. It's apparently his way of making order in a world that is constantly changing for him.