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Non-detectable underground marking tape provides for below ground identification, protection, and warning of associated utility lines. The non-detectable marking tape consists of a 4-mil overall thickness and is formulated to resist degradation underground. The heavy-metal free, non-adhesive underground marking tape serves as a durable, highly visible warning device that can withstand the elements. Non-detectable tape is available in 3" and 6" widths and a variety of colors and legends specified in the American Public Works Association (APWA) National Color Code.
The American Public Works Association, a non-profit professional association, created a uniform color code for utility companies, both public and private. The colors have become the marking standard across all industries.
