Guilford County Schools is requesting proposals from qualified, licensed, and full-time plumbers to provide on-call services for the housing developments and for its central office building. The contractor will provide plumbing repairs, upgrades, installations, and replacements on an as-needed basis to include installation, repairs or modification to water, sewer and drain lines; cleaning and unstopping of drains and sewer lines from l" to 6"; installation, repairs or modification of a variety of bathroom, i.e., sink, shower, toilet, urinals, hot water heaters, well pumps, holding tanks, and drains; installation of gas pipes, pipe insulation, and heat tape; installation and testing of backflow preventers. Other types of repairs and services may be required.