Plastic Pipe Facts™

Corpus Christi, Texas - Cayo del Oso Water Line Repair:

In October of 2009, URS Engineers issued a "Request for Statements of Interest" to pipeline technology vendors for potential solutions to a failed HDPE water main in the City of Corpus Christi, TX. The water main served the Texas A&M University Corpus Christi (TAMUCC) on Ward Island which is accessed by a causeway. Upon video inspection it was discovered that the HDPE water main had a failed fusion joint around "the entire circumference of the pipe leaving a gap of 0.25-0.50 inches". Concern over the quality of other HDPE welds necessitated the replacement of the entire 865 foot line. The HDPE water main that failed after being put into service crossed a sensitive marsh area and was inaccessible for a conventional repair (a repair attempt failed as a result of difficulty in stabilization of the excavation site).1

A new line was successfully installed via horizontal directional drilling using a thermally fused PVC pipe material in 2010.2

Photos showing alignment of failed HDPE water main under the wetlands adjacent to Ward Island



  1. Request for Statements of Interest, Cayo del Oso Water Line Repair, Corpus Christi, TX;  Jeff Edmonds, Branch Manager URS Corporation,  October 7, 2009.
  2. Underground Solutions, Inc.