Respond to requests for service on an on-call basis, including emergency and non-emergency repairs. Troubleshoot, diagnose, and repair leaks, clogs, blockages, and water pressure issues. Repair, replace, or install plumbing fixtures such as sinks, faucets, toilets, showers, and hose bibs. Maintain and repair domestic hot water systems, including storage tanks, instantaneous heaters, and recirculation lines. Inspect and repair sanitary sewer lines, drains, and cleanouts. Support code compliance upgrades and water efficiency improvements.