Flemington Precast aims to continuously deliver high quality products while maintaining personalized customer service. Owned and operated by the Hoffman family since 1976, our roots date back to the 50's. We look forward to working with you soon.
When it comes to septic supplies, there is no other place to go then Flemington Precast and Supply. Our relationship started with a handshake over 30 years ago and they have exceeded our expectations ever since. Their knowledgeable & friendly staff know my business and they have what we require year after year.
— John Martin, John P. Martin Excavating, LLC
 Previous owner George W. Hoffman delivering a septic tank, circa 1980's.

Flemington Precast has been a wholesale supplier of precast concrete products for over 40+ years. We service the areas of New Jersey, Southern New York, and Eastern Pennsylvania. Additionally, we offer pipe, fittings, and products for conventional and advanced/alternative onsite sewage treatment systems for residential and commercial applications. We are one of the longest serving suppliers of these products in the tri-state area, combining our knowledge of precast products with the growing onsite wastewater treatment industry, particularly advanced and alternative treatment systems.


Working closely with the NJ Department of Environmental Protection (NJDEP), health officials, engineers, contractors, and property owners, allows us to provide the best products and services for a cleaner environment. We provide training and support for our products in order to give you the best end results. We are not an installer. Therefore, we don’t have the obvious conflict of interest that other suppliers have as also being installers.


Flemington Precast is the NJ distributor of leading onsite treatment technologies, including Anua's Puraflo® Peat Fibre System and PuraSys SBR Aerobic Treatment System, and Geoflow’s Wasteflow® Drip Dispersal System. A quick guide to our products can be found on the products page as well as additional information throughout our web site.


Our diverse precast product line includes, but is not limited to: septic tanks, pump tanks, distribution boxes, riser extensions, grease interceptors, seepage tanks (a.k.a. drywells or recharge tanks), catch basins, trench drains, outflow structures, water meter pits, utility vaults, telecommunications products, generator slabs, transformer pads, light pole bases, headwalls, oil/water separators, sand/grit interceptors, bumper blocks, splash blocks, custom structures and slabs.


As a family owned and operated company, we offer you the value that comes from well-made products, attention to detail, and an understanding of what each of our customers expects of us. We won't promise what we can't deliver, but we will deliver what we promise.

We look forward to establishing a long relationship with your company soon.