Which plumbing symbol represents a cold water line?

The symbol that represents a cold water line is commonly depicted as a straight line. This is a standardized representation in plumbing schematics and drawings. The use of a straight line conveys a straightforward and direct channel through which cold water flows within a plumbing system. It indicates that this line carries cold water to fixtures, appliances, or other areas where cold water is needed.

In contrast, other symbols often denote different types of piping or services; for instance, a cross symbol is typically associated with connections or valves, while wavy lines may indicate drainage or vent lines. Therefore, recognizing the straight line as the representation for cold water is crucial for properly interpreting plumbing schematics.