What are the identification requirements for pipes, valves and other equipment in reclaimed water service?
• The minimum identification requirements are defined by Arizona Administrative Code (AAC) R18-9-601 through 603 for pipeline or open conveyance of reclaimed water. The color purple shall be used for identifying all valves and other equipment used for conveying reclaimed water. For pipelines the pipe must be marked on opposite sides with “CAUTION: RECLAIMED WATER LINE” labeling in intervals of three feet or less. Aboveground reclaimed water piping must be labeled per the preceding paragraph and colored purple or wrapped with durable purple tape. Underground piping must be identified with one of the following alternatives: • The pipe must be labeled per the preceding paragraph and colored purple or wrapped with durable purple tape. • Identification sleeving (pipe socks) made from an inert polyethylene plastic, 4 mils thick, purple in color with the words “CAUTION: RECLAIMED WATER LINE” or similar wording printed in 1-1/2″ high black lettering continuously along the entire length may be
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