Purple Pipe for All Waters?
Purple is the standard color for pipe adopted by the international utility industry to distribute municipally treated reclaimed water. In late June 2008, a question was raised alerting water reuse professionals to a proposed plumbing code change that would require use of purple pipe for all graywater systems. The proposal was embedded in updates to the 2009 International Plumbing Code under final development by the International Association of Plumbing and Mechanical Officials (IAPMO). When informed of the proposed change, three professional organizations [Water Environment Association (WEF), American Water Works Association (AWWA), and WateReuse Association (WRA)] engaged to revise the code. Debate between the three professional organizations and the IAPMO is ongoing regarding the final determination of whether purple is the appropriate color for graywater piping.
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Document Type: Research Article
Publication date: 2009-01-01
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