Arlington County’s sanitary sewer system includes 465 miles pipes and 13 lift stations. The Arlington County Capital Improvement Program funds the annual relining of approximately 1.5 percent of the system, or about seven miles of pipe.
The County uses cured-in-place pipe (CIPP), a trenchless rehabilitation process that repairs existing vitrified clay and concrete pipes using a resin (styrene) saturated felt tube. This process is less expensive—and less disruptive to neighborhoods and businesses—than replacing pipes.
Take a look inside the process as the County conducted its work on the S Four Mile Run sanitary sewer line.