I had to shut off the main water supply valve because I needed to put a washer in another shutoff valve. When I turned the main valve back on it started leaking and I couldn't stop it. I called Waterworks and they had Aaron call me back within 5 mins. When he looked at it he initially thought it needed to be replaced but then he worked on it and got it to stop leaking and it ended up not needing replaced. This meant that it ended up costing less than half of what the replacement would have cost, not to mention another $500 if the city had to shut the water off. Aaron was friendly and professional. I am very pleased with the service call.