"or call a plumber that offers emergency service."

We just went thru this last month, working in basement at retail store, noticed the water pipe near the panel was in poor condition, we called the owners attention to the pipe, he comes down to look at it, and bangs on it, and the pipe opens, water all over, we shut it down, he calls his plumber, with no return calls, he tries emergency plumbers, the man was there in less then an hour, the customer thanked us for bringing it to his attention, now if while we were working there we hit the pipe, we would being doing the same, calling an emergency plumber.