Specifications include, but are not limited to: Remove obstructions from stools, drains, and from sewer lines to the nearest manhole opening. 3.2.1.2 Turn water valves on and off as needed while on duty. 3.2.1.3 Clean and make minor repairs and adjustments to drinking fountains, faucets and valves, and, perform preventive maintenance on water conditioning equipment. 3.2.1.4 At Rest Areas that are served by city or rural water systems, the Region may require the caretaker to make daily readings of the water meter for early detection of leaks. 3.2.1.5 Contractor shall be a certified Class 1 Small Water Treatment Operator, or be able to become certified within 90 days, and maintain the water treatment system according to Environmental Protection Agency (EPA) requirements