Major Responsibilities and Duties: Maintenance and Repair Plumbing Systems: Assemble, install, maintain, and pressure test all pipes, fittings, and fixtures of heating, water, drainage, sprinkler, and gas systems according to specifications and plumbing codes. Primary Purpose: Under supervision, maintain the flow and drainage of water, air, and other gases by assembling, installing and repairing pipes, fittings, and plumbing fixtures district-wide.