Working in southwest Delaware, McMullen Septic Service encounters home sites that require more than conventional rock-and-pipe onsite wastewater treatment systems.
Co-owner Brian McMullen notes that at least one-fourth of the company’s installations require some form of advanced treatment unit. The company relies on RetroFast and MicroFast systems from Bio-Microbics and Delta ECOPOD systems from Infiltrator Water Technologies.The area is mostly flat, and the soils are sandy. The aerobic treatment units come into play in environmentally sensitive areas. “We have a little section that is basically beach property, called the Inland Bays Watershed,” McMullen says. “That’s where pretreatment units are mandatory because
