Thought it was someone's generator but it was my water pump!

Had that happen a little while ago. My aunt uses or trailer as a guest house when she visits. The pump was on and the tank was nearly empty from the last trip. Couple uses and it ran dry. My pump is on a isolating block and I have put cloth around the pipes so it runs very quiet. She did not realize it was running. I discovered it the next evening. Ran dry for 24 hours. These pumps are designed to run dry, and my aunt tested that theory! Seems to be fine :)