Thanks Mitchgo/Wet_boots.
I will try to reproduce it as soon as I get home.
Now I feel better because:
1: you are telling me that not to worry about it, and it won't break the pipe
2: my neighbor has the exact same noise, and he has had his system for 10+ years.
If the water meter is not going to break, I really don't want to replace the meter, because my basement is finished, in order to reach the meter, I have demolish a piece of drywall and patch it back, paint it again, too much work!
But thanks for all the good suggestions!
Try reproducing this by turning on all your hose bibs-- it may not be as apparent because the hose bibs usually create a lot of noise.