Designed for use by individuals enrolled in vocational agricultural classes, these student materials deal with farm water supply, sanitation, and plumbing skills. Topics covered in the unit are maintaining the farm water supply; repairing faucets and valves, leaks in pipes and storage tanks, and water closets; clearing clogged drains and traps; maintaining water systems; reading blueprints and recognizing plumbing symbols; selecting pipe, pipe fittings, valves, and plumbing tools; measuring, marking, cutting, and reaming pipe; threading galvanized and black pipe; flaring copper tubing; assembling tubing with solder fittings; measuring, cutting, and assembling cast iron pipe; making plastic-to-plastic connections; and installing sewage disposal systems. The unit includes instructional text and suggested student activities based on the text. (MN)