Roswell Concrete Products is your #1 and #2 Manufacturer of all things precast in Southwestern Ontario for over 60 years.We are a manufacturer of Precast Concrete Septic Tanks, Cisterns, Holding Tanks, Pump Chambers, Catch Basin and more!We are a Distributor of Plastic Septic Tanks, Plastic Holding Tanks, Plastic Pump Chambers. PVC Pipe (CSA Septic Pipe, SDR35, SDR28), HDPE (Big O, Boss 2000) and Culvert (CSP and Plastic) as well as all your fittings for your septic system!