Complete septic system service and installation. J. W. LaFrenier Sons, Inc. is a full service septic system company. We do residential and commercial septic installations in the Lakeland area of Northern Wisconsin. Services include soil evaluations, septic inspections for real estate sales, septic inspections for County Maintenance, septic system repairs, septic system installations, septic pumping, and septic system design. We specialize in difficult sites where conventional systems do not work by using advanced technologies like aerobic pretreatment and drip distribution. We also design and install alternative septic systems such as mounds, at-grade, pressure distribution, and systems in fill.