There were new hydrants being installed in my community, but we didn't know it, so when we flushed the toilets or ran any water, it was loud and scary, with a lot of sputtering. RSM Plumbing came out quickly, diagnosed the issue (massive air in the water lines) and ran multiple water sources until it cleared. The biggest surprise - they only agreed to take a couple bottles of water and that's it. No charge. RSM Plumbing will be my go-to from now on.