As is the case with many older wastewater districts, most of our collection system was vitrified clay pipe. In the late 1980's, District initiated an aggressive pipe replacement program to upgrade the aging collection system and improve service quality. Approximately 55% of our collection system is new. Today, over 80% of our collection system is PVC, HDPHE or ductile iron pipe. Pictured is a pneumatic hammer used in the "pipe bursting" process: this equipment splits the old pipe and pulls new HDPHE pipe in its place.