All exposed piping must be color-coded in accordance with the following table:
PIPING | COLOR CODE | WASTE LINES | COLOR CODE |
Potable water lines | Dark blue | Backwash waste | Dark brown |
Filtered water | Light blue | Sewer (sewer or other) | Dark gray |
Skimmer or gutter return | Green | Deck drains | Light brown |
Main drain | Black | ||
PIPING | COLOR CODE | ||
Alum | Orange | ||
Soda ash | White | ||
Acid | Pink |
Where two colors do not have sufficient contrast to easily differentiate between them, a 6-inch band of contrasting color should be colored on 1 pipe at approximately 30-inch intervals. The name of the liquid, and arrows indicating direction of flow, should be shown on the pipe.
10- 144 C.M.R. ch. 202, § 6