The latest issue of Water & Wastes Digest includes Mark Oriol’s article on protecting pipes with engineered liners and coatings. He underscores quickly just how major of a need this preventative measure is: there are nearly 1.2 million miles of sewer lines in the United States alone. Among the liners he highlights you’ll find GSE’s StudLiner, a high-density polyethylene (HDPE) embedment liner that uses extruded studs rather than ribs for anchor points. A system of this sort can deliver more than 50 years of service.