How can we help “Save Your Septic”?

The S.O.S.-Save Our Septic® Program provides homeowners peace of mind when upgrading biologically-failed septic systems and to prevent future failures.  We can help fix or prevent:

  • Soggy Lawns
  • Foul Odors
  • Plumbing Backups

Installed in the existing septic tank, the RetroFAST® Septic System Enhancement provides a simple, “septic system enhancement” that improves conventional septic tanks to ensure a clean environment for future generations without the use of costly chemicals or additives.

Guaranteed or your money back! Whether due to age or site issues, the S.O.S.-Save Our Septic® Program identifies an existing septic system’s biological failing situation. Under this program, we are offering a MONEY-BACK warranty. If after one (1) year from the date of startup date, the RetroFAST® Septic System Enhancement does not eliminate the symptoms of the biologically failed system; the owner is entitled to the refund amount of the entire RetroFAST® system.

Program Details

REMEDIATION or your money back!

The rise in demand for sustainable technologies to the world’s water needs, green-building incentives, changes in regulations, water shortages, and the rising cost of water have all become principal drivers towards the sustainable water, wastewater, greywater, and stormwater treatment solutions. Upgrading an existing septic tank not only extends the life of the drain field but also enhances property value for implementing advanced wastewater treatment strategies.

After a qualified Service Provider has inspected the existing septic system on the property and identifies a biological failing situation – whether due to age or site issues, then a “Site Evaluation/Registration” Report is completed.

Once the RetroFAST® Septic System Enhancement is installed, the incoming waste will receive high levels of treatment. This helps to break up and reduce the clogging layer in the drain field.
As an upgrade to an underperforming septic system, the RetroFAST® System eliminates ponding and drain field failure symptoms.



If after one year from the time of the startup date the RetroFAST® system does not remediate the drain field, the property owner is entitled to their MONEY BACK for the RetroFAST® unit.

How Conventional Septic Systems Work & How Do They Fail?

How Your Septic System Works


Septic systems are underground wastewater treatment structures, commonly used in rural areas without centralized sewer systems. They use a combination of nature and proven technology to treat wastewater from household plumbing produced by bathrooms, kitchen drains, and laundry.

A typical septic system consists of a septic tank and a drain field, or “soil absorption” field.

The septic tank digests organic matter and separates floatable matter (e.g., oils and grease) and solids from the wastewater. Soil-based systems discharge the liquid (known as effluent) from the septic tank into a series of perforated pipes buried in a leach field, leaching chambers, or other special units designed to slowly release the effluent into the soil or surface water.

Alternative systems use pumps or gravity to help septic tank effluent trickle through sand, organic matter (e.g., peat and sawdust), constructed wetlands, or other media to remove or neutralize pollutants like disease-causing pathogens, nitrogen, phosphorus, and other contaminants. Some alternative systems are designed to evaporate wastewater or disinfect it before it is discharged to the soil or surface waters.

Specifically, this is how a typical septic system works:

  1. All water runs out of your house from one main drainage pipe into a septic tank.
  2. The septic tank is a buried, water-tight container usually made of concrete, fiberglass, or polyethylene. Its job is to hold the wastewater long enough to allow solids to settle down to the bottom forming sludge, while the oil and grease float to the top as scum.
    Compartments and a T-shaped outlet prevent the sludge and scum from leaving the tank and traveling into the drain field area.
  3. The liquid wastewater (effluent) then exits the tank into the drain field.
  4. The drain field is a shallow, covered, excavation made in unsaturated soil. Pretreated wastewater is discharged through piping onto porous surfaces that allow wastewater to filter through the soil. The soil accepts, treats, and disperses… wastewater as it percolates through the soil, ultimately discharging to groundwater.
    If the drain field is overloaded with too much liquid, it will flood, causing sewage to flow to the ground surface or create backups in toilets and sinks.
  5. Finally, the wastewater percolates into the soil, naturally removing harmful coliform bacteria, viruses and nutrients. Coliform bacteria are a group of bacteria predominantly inhabiting the intestines of humans or other warm-blooded animals. It is an indicator of human fecal contamination.

View an animated, interactive model of how a household septic system works EXIT created by the Guadalupe-Blanco River Authority.

Failure symptoms: Mind the signs!

A foul odor is not always the first sign of a malfunctioning septic system. Call a septic professional if you notice any of the following:

  • Wastewater backing up into household drains.
  • Bright green, spongy grass on the drainfield, even during dry weather.
  • Pooling water or muddy soil around your septic system or in your basement.
  • A strong odor around the septic tank and drain field.

There could be many reasons why your septic system failed, such as overuse, underuse, age, improper sizing, additives, etc.

With only 15-20% of the treatment occurring in the tank in a conventional septic system, the rest is reliant on the drain field.

Furthermore, the untreated water contains an abundance of nitrogen (which promotes the growth of algae and other unwanted autotrophic organisms).

Over time, this combination can build a slimy, biomass layer clogging the trench forcing the water to the surface.

EPA’s SepticSmart Program educates homeowners about proper septic system care and maintenance all year long. In addition, it serves as an online resource for industry practitioners, local governments, and community organizations, providing access to tools to educate clients and residents:

  • Protect It and Inspect It: Homeowners should generally have their system inspected every three years by a qualified professional or according to their state or local health department’s recommendations. Tanks should be pumped when necessary, typically every three to five years.




  • Think at the Sink: Avoid pouring fats, grease, and solids down the drain. These substances can clog a system’s pipes and drain field.





  • Don’t Overload the Commode: Only put things in the drain or toilet that belong there. For example, coffee grounds, dental floss, disposable diapers and wipes, feminine hygiene products, cigarette butts, and cat litter can all clog and potentially damage septic systems.




  • Don’t Strain Your Drain: Be water-efficient and spread out water use. Fix plumbing leaks and install faucet aerators and water-efficient products. Spread out laundry and dishwasher loads throughout the day – too much water at once can overload a system that hasn’t been pumped recently.




  • Shield Your Field: Remind guests not to park or drive on a system’s drainfield, where the vehicle’s weight could damage buried pipes or disrupt underground flow.





  • Pump your Tank: Routinely pumping your tank can prevent your septic system from premature failure, which can lead to groundwater contamination.





  • [If Applicable] Test Your Drinking Water Well: If septic systems aren’t properly maintained, leaks can contaminate well water. Testing your drinking water well is the best way to ensure your well water is free from contaminants.

For more information on EPA’s “Septic Smart” Homeowners Tips on how to properly maintain your septic system, visit

RetroFAST® is Proven Technology



Simple, Dependable, Affordable…FAST®

RetroFAST® systems are designed for residential-strength wastewater in 3 specific sizes. Designed for enhancing or repairing existing septic systems that have biologically failed, the RetroFAST® system inserts into an existing 16″ manhole without the need for heavy equipment. A very cost-effective solution that meets environmental standards with long term results.

RetroFAST® can remediate failures and extend the life of your septic system. This EPA-ETV verified “septic system enhancement” improves conventional septic tanks to ensure a clean environment for future generations without the use of costly chemicals or additives. The Fixed Integrated Treatment Technology (FITT™) process is one of the most widely used and popular methods of treatment for advanced wastewater treatment systems and creates optimal contact between the incoming waste, free oxygen, and biomass. This allows the system to maximize pollutant reduction.

RetroFAST® Available Sizing

RetroFAST 0.15    150GPD      570LPD  
RetroFAST 0.25    250GPD      950LPD  
RetroFAST 0.375    375GPD      1420LPD  

The RetroFAST® system (complete with an above-ground blower and control panel) has the ability to immediately improve a biologically failed drain field. The USEPA ETV-tested RetroFAST® Septic System Enhancement provides a simple upgrade to conventional septic systems.

Easy Installation
Inserted directly into an 18” (45 cm) manhole, this low-impact design avoids digging up your entire yard. The finished product is very landscape friendly! RetroFAST® is easily installed directly in the septic tank without the need for heavy machinery (usually in less than half a day) in your existing tank. The system must be in compliance with local codes and specifications.

Low Cost, Long Lasting Solution
The EPA-ETV certified RetroFAST® Septic System Enhancement consistently provides high levels of treatment in the tank (90-95%) and delivers high-volumes of dissolved oxygen in the treated effluent to the drain field.The dissolved oxygen (DO) aids in digesting the excessive biomat. With the biomat diminished and the drainfield rejuvenated, the soil is free to accept future effluent and extend the life of the drainfield.

Bio-Microbics focuses on providing advanced, wastewater treatment systems that are design efficient and support sustainable construction goals for resilient homes or long-term performance of buildings.

Technical Downloads & Technology Certifications

Technical Downloads:

S.O.S.-Save Our Septic® Program Guidelines

TERMS AND CONDITIONS: An exclusive warranty is given by Bio-Microbics, Inc. through its distributors for the S.O.S.—SAVE OUR SEPTIC® Warranty Program (hereafter Program) gives the property owner the right to be refunded the cost of the RetroFAST® system only if the system does not, after one (1) year from the start-up date, remediate the property owner’s drain field that was deemed biologically failed by an authorized Certified FAST® System Installer or Distributor. When installed and operated in accordance with the Bio-Microbics, Inc.

THE PROGRAM WARRANTY IS NOT VALID if the RetroFAST® Product Registration and the S.O.S. Site Evaluation Form are not submitted to Bio-Microbics, Inc. and/or the site is NOT deemed to be biologically failed by Bio-Microbics, Inc. or a certified FAST® Installer or Distributor. A COPY OF S.O.S – SAVE OUR SEPTIC® WARRANTY CERTIFICATE MUST BE INCLUDED WITH ANY CLAIM.

Onsite wastewater treatment systems are more and more in use in suburbs and rural areas. Local regulations require that systems be certified to ensure the protection and preservation of the public’s health and the environment. Other Reports can be obtained.  The use of these certifying bodies helps to open new markets and instill confidence that newer technologies are in fact better than current methodologies. With tens of thousands of installations all over the world, the FAST® technology is used successfully in municipal, industrial, marine, commercial and residential type applications for over 35 years. When you buy our advanced Wastewater or Stormwater treatment products, you get the support of a valuable team:

  • NSF® (National Sanitation Foundation International)/ANSI® (American National Standards Institute) Std 40, Class 1, a 6-month (26-week) test. Class I systems must achieve a 30-day average effluent quality of 25 mg/L CBOD5 and 30 mg/L TSS or less, and pH 6.0-9.0.:
  • NSF/ANSI Standard 245, Nitrogen Reduction, defines total nitrogen reduction requirements to meet the growing demand for nutrient reduction in coastal areas and sensitive environments:
  • NSF/ANSI Standard 350, Class R (Water Reuse), NSF 350 is a water (health) standard, not a wastewater treatment standard with a pass/fail criteria: The BioBarrier system had test results that were non-detectable CBOD5 and TSS; turbidity of 0.25 NTU; and E. Coli of 1.3 MPN/100 ml.
  • EN-12566-3, Europe Union, Packaged and/or site assembled domestic wastewater treatment plants for up to 50 People, tested conform the EU Norm EN 12566-3 by PIA in Aachen (Germany) with the percentage reduction of influent pollutants. During the 38-week test the BioBarrier performed the following levels: COD reduction 97.2%, BOD reduction 98.9%, Suspended Solids reduction 99.8%, NH4-N reduction 96.2%, fecal coliforms 99.9%.
  • Compliance with Canadian National Standards and BNQ (Bureau de Normalisation du Québec) Test, Canada, Installations must comply with the Q-2, r.22 regulation in accordance with NQ 3680-910 standard

Bio-Microbics, Inc. warrants every new system against defects in materials and workmanship for a period of two (2) years after installation or three (3) years from date of shipment, subject to the following terms and conditions: During the product warranty period, if any part is defective or fails to perform as specified when operating at design conditions, and if the equipment has been installed and is being operated and maintained in accordance with the written instructions provided by Bio-Microbics, Inc., Bio-Microbics, Inc. will repair or replace, at its discretion, such defective parts free of charge. Defective parts must be returned to the owner to Bio-Microbics, Inc.’s factory postage prepaid if so requested. The cost of labor and all other expenses resulting from replacement of the defective parts and from the installation of parts furnished under this warranty and regular maintenance items, such as the air filter, shall be the responsibility of the owner.

To contact a local Bio-Microbics distributor, email or have any questions about the S.O.S.-Save Our Septic® Program, please call at 1-800-753-FAST (3278) for further assistance.