KRM mentioning how high water will shoot reminded me of another.
My wife had bought a 4’ tall flower-shaped pinwheel for our yard. We stuck it in the ground, but it kept falling over or the kids would pull it out. So we decided to put it up a little more permanently.
At first I was going to pound a piece of PVC into the ground and then slip the base of the pinwheel into that. But then I thought that it might need more stability, so I was going to put in a metal stake, slip the PVC over that, and then the pinwheel into that.
Hammer in hand, I pounded the stake into the ground. About 6" down, I met a bit of resistence. I pounded the stake again and immediately heard a liquidy hissing noise. The first thing that popped into my head was “Please don’t be the sewer, please don’t be the sewer, please don’t be the sewer.”
It wasn’t. It was the water main.
Almost immediately, we had a geyser shooting up higher than the roof. I ran down to our meter to shut off the supply, but there wasn’t a standard valve–it was one of those bar-shaped ones that you need a meter wrench to close. I didn’t have one, but the second neighbor whose house I ran to did.
I couldn’t budge the valve. Even with the neighbor/wrench owner helping. I grapped my biggest adjustable wrench and slipped it over the handle of the meter wrench to provide a little more leverage. That did–geyser averted.
However, my wife had called the city in the meantime. They show up to find me, dripping wet, meter wrench in hand. “You didn’t shut off your water yourself, did you? Because you know, you’re not supposed to tamper with the meter. You could get fined for doing that.”
They didn’t fine me, largely because I played dumb (I know, not too hard to do in this case)–“Oh, I didn’t know that”–and thanked them profusely for coming out so rapidly. Plus I had the kids out with me and I guess they didn’t want to bust my chops in front of them.
Coda: when the plumber came to fix the main, we found that I’d hit it dead-center. If I’d hammered that stake 1/2" to either side, I would have missed the main.