The letter D in a dream represents confrontation with sacrifice. Full awareness of a situation that demands that you give something up or put others first. The symbolism is based on the design of the letter D being a straight line that is facing a half circle.
drain line: A pipe line which is used to carry water from the water treatment system to a waste system. drinking water: A water treated or untreated which is intended for human use and consumption and considered to be free of harmful chemicals and disease-causing bacteria, cysts, viruses or other microorganisms.
Reverse Osmosis Treatment for Drinking Water. Other fact sheets in this series identify reverse osmosis, commonly called RO, as a treatment process for. removing many different contaminants. RO is more generally used for small volumes of drinking water. This document provides greater detail concerning RO treatment.