Welcome Newmarket Pre-cast Concrete Products

Newmarket Pre-Cast has been in business serving southern Ontario since 1970. We specialize in septic tanks, holding tanks, oil & grease interceptors, syphon/pumping chambers, storage sheds and retaining walls. The business was originally started in Newmarket, Ontario by Roy Weddel, Brian’s father, by installing septic tanks for customers, and by providing exceptional customer service. In those, days it was the supplier who told the customer when and if they could deliver and install their septic tanks, Roy decided to change this way of business and Brian still holds that standard today.


  • Model 3078 Interceptor
  • Model 22500 Septic 2 Piece Unit
  • 2250L Drainage Tank
  • Model 27500 Septic 2 Piece Unit
  • Model Low 22500 Septic 1 Piece Unit
  • Small Distribution Box
  • Model 6800 Holding 1 Piece Unit
  • Model 27000 Low Holding 2 Piece Unit
  • Model 4500 Septic 1 Piece Unit
  • Model 45400 Septic 2 Piece Unit