1250/350 Gallon Precast Concrete Monolithic Septic Tanks

Great customer service, knowledgeable and honest. Thank you.
The best precast products around
Always willing to work with you. Good products at a fair price.
Delivery driver for the septic tank was awesome!!
Good business. Great service. Very prompt on delivery and a well-made product. Thanks
Great service fast delivery
Great family run and operated business. Helpful with questions and the delivery, product and service is the best in the state.
Great service!
They consistently deliver quality products on time. I use them every time I install a septic system, Great Job!
Very nice people.
Helpful , locally owned , friendly. I had a great experience with them.
I was looking for a new Presby septic system and I found Andrew J Foss. This company is great, awesome customer service, honest people, and really helpful. Thank you Andrew.
I have been a customer of AJ Foss for 18 years, they go out of there way to make my jobs successful. They are always prompt and courteous, I will continue to use them in the future
Andrew J Foss has everything I need as an excavation contractor. Their service is prompt and their prices are very competitive.
I called them to buy a septic tank and distribution box and they were very helpful and reasonably priced. I would buy from them again!!!!!!
I have had the opportunity to cross paths with AJ Foss many times over the past 10 years, and I have been consistently impressed with the quality of this organization. The number of contractors that trust AJ Foss for their precast concrete needs tells the story. Contractors don't want to insecurity, and the trust they put in AJ Foss speaks volumns. A quality family-run operation that has served southern NH for decades. If you are a contractor and you are NOT using AJ Foss, you owe it to yourself to check them out.

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    New HampshireVermontMaineMassachusetts


    1250/350 Gallon Concrete Monolithic Septic Tank Overview

    Designed to hold 1600 gallons of liquid, this top-seam style concrete septic tank is a popular choice. Septic system plumbing designers and contractors appreciate this tank’s functionality. It provides home and property owners the ability to run pipes from the house to either of the tank’s side or center inlets.

    The same option is available on the outlet of the tank, extending to the leach field from the tank’s side outlet or from its middle outlet. Polylok IV closed end boots used on tank penetrations provide flexible, water tight connection to the pipe entering and leaving the precast structure.

    Our team of A.J. Foss experts manufacture precast concrete tanks that meet all best-practice requirements of ASTM C 1227 & NPCA.   Our service area includes customers in New Hampshire, Maine and northern Massachusetts.  Every job we support reflects the excellence that the A.J. Foss team is known for providing.

    1250/350 gallon precast concrete monolithic septic tank drawing.Features/Details*

    • 1600 Gallon tank used for 4 bedroom systems where a pump chamber is needed to send the effluent to the leach field
    • Can also be used for up to 4 bedroom systems
    • Having two compartments helps separate the solids before the effluent leaves the tank
    • Top seam tank for use in high water table areas or where preventing water infiltration is critical
    • Is delivered pre-assembled for ease of installation
    • Most common two compartment tank in NH
    • Shallow tank can be used in ledge situations

    * Details shown are NH-specific.

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