Faced with boring through wetlands and under a creek to address much needed improvements to its sanitary sewer system, the City of Elmhurst, Ill., turned to new large diameter restrained-joint PVC pipe and horizontal directional drilling (HDD) to get the job done. After area homes were plagued with sanitary sewer backups following a severe storm in 2010, the Chicago suburb launched the $10 million Southwest Elmhurst Wet Weather Control Facility project. This was not the first time the City had faced storm-related backflow problems, and the new project aimed to alleviate sewer backups in as many as 2,300 homes in the southwest corner of the City, the area hit hardest by sewer backups.
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