A Nutrition Consultant in the Houston, TX Area area reported making $34,000 per year
Water level (device) A water level is a device used for matching elevations of locations that are too far apart for a spirit level to span. The simplest water level is a section of clear tubing, partially filled with water. Water is easily procured for use, and easily discarded after use.
A valve, usually installed in the lowest portion of a piping system or. vessel, that controls the flow of liquid from the system or vessel. Also called. drain valve. dual system. A situation in which a second plumbing system is installed along-. side the system for provision of drinking-water. An example is a potable. drinking-water system and a greywater system in the same facility. electrolysis.