Andrew J. Foss, Inc.

1000 Gallon Septic Tanks

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Our 1000 gallon septic tank, made of quality precast concrete, is designed to hold 1000 gallons of liquid. A plumbing team can extend pipes from home drains to either the side or center inlets of this mid-seam style concrete septic tank. Plumbers in the New England area appreciate that this same option is available on the tank outlet.  Pipes can carry waste water effluent from the tank to the leach field from either of the tank’s well-placed side or center outlets. Closed-end Polylok IV plumbing boots are used for the job of installing the tank’s penetrations.  This provides flexible, water tight connection for pipes as they enter and exit the precast tank structure.

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Our team produces and services this commonly-used style of tank to meet all best-practice requirements of ASTM C 1227 & NPCA.   A.J. Foss serves home and business waste water service needs by partnering with area septic system designers, plumbers, and excavation professionals throughout New Hampshire, Maine, and Northern Massachusetts.

This smaller-sized tank is mostly used as a pump station, holding tank, or for adding capacity to an existing septic system. That’s because the NH Department of Environmental Services (DES) Subsurface Systems Bureau revised state rules in 2012. This obsoleted specification of this tank for jobs in NH involving home waste water tank system installation.

  • 1000 gallon septic tank is used in 2 bedroom systems.
  • Often used as a pump station.
  • Was the standard size in NH for many years, is the standard in Maine.
  • This is the smallest size recommended for use as a grease trap.
  • Is delivered pre-assembled for ease of installation

Tank dimensions: 8’ x 5’8” x 5’2”
Number of bedrooms supported: Formerly 2
Now used as a pump station, holding tank, or adding to an existing system
Pre-assembled: Yes
Ideal for high water table: No, but our 1000 gallon monolithic septic tank is.
Average retail cost: $1137.50
Number of covers (lids): 2
Can come in traffic rated (H20) capacity: Yes
Concrete strength: 5,000 PSI
What are its gallons per vertical inch: 21
Weight: 8,600 lbs.
Fiber re-enforced: Yes
Number of inlets boots (Up to schedule 40 pipe can slide through): 3
Height of inlet from bottom of tank to bottom of pipe: 51”
Number of outlets boots (Up to schedule 40 pipe can slide through): 3
Height of outlet from bottom of tank to bottom of pipe: 48”
Required height of inlet baffle (20% of liquid level): 9”
Required height of outlet baffle (40% of liquid level): 18”