Over the past decade, we have seen a huge turn in the interceptor market — the adoption of HDPE (plastic) interceptors. 

Gravity often dictates storm drainage design. Pipe can only run so far with pitch before crossing over into livable space. At times, it requires a leader to drop down in the middle of the building, with the only solution being to excavate a long distance — still accounting for pitch — through the interior to reach the civils.