GeoMat Leaching System

GeoMat CRU files provide multiple design options for any application.

We are often asked if GeoMat can change a mound or at-grade to an inground. Quite often the answer is yes. 

Bob Berceau, co-owner of New Septic Solutions, is a CST and licensed designer. Bob has designed hundreds of GeoMat systems. 

If you need help getting started with our CRU files, or if a site has you questioning the best option to go with, contact us via telephone or text at 608-333-3610.

GeoMat is available through these distributors

or through NSS Online Store

Able Distributing            Wausau

Preferred Pump               Eau Claire

Quality Pump                  Madison

Rundle Spence                Madison, New Berlin

Wieser Concrete              Maiden Rock, Spooner

GeoMat 2022 Prices

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FREE SHIPPING via Common Carrier 

2nd day delivery anywhere in Wisconsin

GeoMat is 39" wide by 1" thick

GeoMat comes in 100 ft. rolls

A roll is 36"x36"x43" high - Weight: 70 lbs. 

The Problem                                                         The Solution


Septic systems fail when

  • The soil becomes saturated and oxygen-starved. 

  • Saturated, oxygen-staved soil produces anaerobic bacteria.

  • Bacteria form a blackish, slimy layer of biological waste matter (biomat). 

  • As long as water continues to be used, the soil will remain saturated.

  • When biomat completely covers the ground biomat rises to the surface. 

  • This type of failure almost always goes unnoticed until it's too late to fix it.

Pressurized septic systems are designed to utilize the entire drainfield each time they dose. In doing so, they provide better treatment of wastewater (effluent) and increase the lifespan of the system. 

In reality, pressurized systems do NOT utilize the entire drainfield because effluent does not disperse far enough from the point of contact to cover the field from side    to side. 

A common cause of failure in mound systems is due to biomat forming at            the interface of the orifices and the area and the area below them.When

failed mounds are dug up,  the center of the mound is saturated and

the sides are completely dry. 


Pressurized system lifespan is often measured in fractions of an inch

  • Orifice diameter ranges from 9/64" to 5/16"

  • When solid waste reaches laterals, orifices plug

  • Plugged orifices cause uneven wastewater dispersal

  • Uneven wastewater dispersal causes soil to become saturated...


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GeoMat Formula 

Shallow Burial Depth      12" below the surface of the ground.

Even Dispersal                 The shape and entangled plastic membrane spread

                                         water evenly across the entire 39" wide mat.

Max. Oxygen Transfer     Anaerobic bacteria cannot exist in a dry

                                         aerated environment.


GeoMat Load Rate: 2.0 gallons per day per square foot

  • Shallow burial depth combined with even dispersement

       creates maximum oxygen transfer. 

  • Reducing dose size to 50 gallons combined with 12" of sand                      allows water to travel quickly through the sand into the soil. 

  • Even dispersement and 12" of sand lowers BOD (<30 Mg/L)      

       and TSS (<30 Mg/L) to achieve aerobic treatment standards.

Anyone who ever built a septic system knows shit happens; you fix

it and move on. As far as anyone trying to create a crisis, get over it.

Lineal feet per bedroom                     

3 bedrooms     70 lineal feet

4 bedrooms     92 lineal feet        

Solids will NOT reach the drainfield and plug orifices

GeoMat requires installing a pressure filter (Click here)

Prevents hydraulic jetting

GeoMat requires installing QuickSnap Orifice Shields (Click here) 

Wisconsin History

Over 2,000 GeoMat systems installed in Wisconsin since 2018.

ZERO failures. This can only happen when a product performs

as designed. 


Independent Authentication

GeoMat 2.0 load rate was proven in stringent National Sanitation Foundation testing. When a proprietary system is tested by NSF,

the leaching system is hydraulically loaded at the design loading

rate every day. Odds of the design loading rate happening daily

in the real world is virtually zero.


The design loading rate used to load the leaching system includes a peak

flow, which includes a safety factor between 1.5 to 2 times the actual rate.

In addition, the NSF regime requires a high flow stress test be performed.

GeoMat is approved for

  • Conventional gravity systems

  • Conventional dosing systems

  • Conventional pressurized systems

  • Regular mound systems

  • Split-bed mound systems


GeoMat Component Manuals

GeoMat Mound Component Manual: Revised in 2020 (Click to download)

GeoMat Mound Component Manual Approval (Click to download)

GeoMat Inground Component Manual (Click to download)

GeoMat Inground Filter Revision Approval from DSPS (Click to download)

GeoMat originally required installing a gravity filter and a pressure filter.

Installing a gravity filter is no longer required on pressurized systems. 

Below: Brian Gundy Septic Systems, Minocqua

2- bedroom inground pressure system installed in Oneida County

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New Septic Solutions, GeoMat, GeoMat Drainfield System, Quick Snap Orifice Shields, ClearFlow Filter, NSS Wisconsin, GeoMat Wisconsin, Effluent Pressure Filter, ClearFlow Pressure Filter, Geomatrix Systems, Effluent Filter.
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