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Maryland State Government Maryland Department of the Environment

Bay Restoration Fund (BRF) Best Available Technology for Removing Nitrogen from Onsite Systems

The following systems are approved in Maryland within designated classes based on the level of Total Nitrogen (TN) removal capability shown.

Each unit has undergone a rigerous third-party testing process. Examples of third-party testing acceptable to the Department includes:

  • National Sanitation Foundation (NSF)
    • NSF 245
    • NSF 40 Class I
  • Bureau de nornalisation du Québec (Canada)
    • CAN/BNQ 3680-600
  • European Committee for Standardization
    • EN 12566-3
  • University Study
    • Must be peer reviewed
    • Must be actual field work
    • Cannot be laboratory testing only

BRF Ranking Document: CLICK HERE

As required by legislation, the Department must rank all Best Available Technology systems for removing nitrogen for onsite sewage dispersal systems. Rankings are to be provided for the folowing factors:

  • Total Nitrogen reduction for the technologies
  • Total Cost of the technology to include operation/maintenance and electrical consumption
  • Cost per pound for nitrogen reduction.

The Department is to provide to the public this ranking of BAT systems. This ranking is largely based on information provided by the vendors. The Department strongly advises the applicant to contact each vendor directly for more information.

The BAT Technical Review Committee is accepting applications for determining systems for consideration as BAT and eligibility for Bay Restoration Fund grants.

 

The following technologies have successfully completed field verification (BAT Class I):

Model Contact Information Certifications MDE Field
Performance Analysis for Total Nitrogen
Advantex®-
RT
Manufacturer
Orenco Systems®, Inc.
www.orenco.com/   

Local Distributor

Eastern Region -
Service Energy
Paul Hufschmidt – 302-734-7433
phuffy@serviceenergy.com 
 
Central, Southern, Western -
Atlantic Solutions
Bob Johnson- 1-877-214-9283
bjohnson@septicsystems.net
Other

3rd Party 
Mean % Reduction of TN:
76%

Mean Effluent Concentration:
14 mg/l

Data & Analysis
 
Advantex®-AX20   Manufacturer
Orenco Systems®, Inc.
www.orenco.com/    

Local Distributor

Eastern Region - 
Service Energy
Paul Hufschmidt – 302-734-7433
phuffy@serviceenergy.com

Central, Southern, Western -
Atlantic Solutions
Bob Johnson- 1-877-214-9283
bjohnson@septicsystems.net
Other

3rd Party  
Mean % Reduction of TN:
71%

Mean Effluent Concentration:
17 mg/l

Data & Analysis
 
Hoot® BNR Manufacturer
Hoot Aerobic Systems, Inc.
www.hootsystems.com

 Local Distributor -
Mayer Bros.
Nancy Mayer- (410) 796-1434
nancy@mayerprecast.com
Other 3rd

Party  
Mean % Reduction of TN:
64%

Mean Effluent Concentration:
21 mg/l

Data & Analysis  
RetroFAST  Manufacturer
Bio-Microbics, Inc.
http://www.biomicrobics.com  

Local Distributors

Eastern Region -
Gillespie & Sons, Inc.
Jim Gillespie- (410) 778-0900
jimg@gillespieandson.com

Central Region -
Maryland Concrete Septic Tank, Inc.
Trent Glace- (443) 491-3598
trent@marylandconcreteinc.com
ETV   Mean % Reduction of TN:
57%

Mean Effluent Concentration:
25 mg/l

Data & Analysis

Limited to households of 1 to 4 occupants and 3 bedroom or less 
SeptiTech® Manufacturer
SeptiTech, Inc.
www.septitech.com  

Local Distributors

Eastern Region -
Gillespie & Sons Inc.
Jim Gillespie - (410) 778-0900
jimg@gillespieandson.com


Central Region -
Maryland Concrete Septic Tank Inc.
Trent Glace- (443) 491-3598
trent@marylandconcreteinc.com
ETV

And

NSF 245
  Mean % Reduction of TN:
67%

Mean Effluent Concentration:
20 mg/l

Data & Analysis   
Singulair TNT & Singulair Green (plastic tank)  Manufacturer
Norweco, Inc.
www.norweco.com  

Local Distributors

Eastern Shore -
Towers Concrete Products
John Short- (443) 786-0594
btowers62@gmail.com


Southern Region -
Superior Tank
Jeff Earnshaw- (301) 274-3772
superiortank@olg.com 

Western Region -
C.R. Semler
Charlie Semler- (301) 824-2780
crsemler@crsemler.com  

Western Region -
Garrett & Allegany Co.
Pile’s Concrete Products Co. Inc.
Brett Zimmerman- (814) 445-6619
brett_zimmerman@hotmail.com  

Central Region -
Back River Pre-Cast LLC
Matt Geckle- (410) 833-3394
Other 3rd Party

And

NSF 245
  Mean % Reduction of TN:
55%
 
Mean Effluent Concentration:
27 mg/l

Data & Analysis  

 

 

Listed below are the approved technologies that are currently under field verification (BAT Class II):

Model Contact Information Certifications Comments
AquaKlear Manufacturer
AquaKlear
http://www.aquaklear.net/   

Local Distributor -
Care Utilities
Dave Care (410) 977-3453
careless32@comcast.net

Other 3rd Party
And
NSF 245

Under Field

Verification

Clear Rex Bubbler

CRB 1

Manufacturer
PekaSys, Inc.
www.pekasys.com  

Local Distributor -
Eastern Shore and Anne Arundel County
Innovative Building Solutions
www.buildingsolution.net
Larry Price - (410) 643-6161
mail@buildingsolution.net

NSF 245

And other

Under Field

Verification

Hydro-Action® - AN Series   

  Manufacturer
Hydro-Action/AK Industries Inc..
www.hydro-action.com 

Regional Distributor -
Blue Water Environmental, LLC
Mark O'Rourke - (240) 444-6401
mark@bwenvironmental.com.

 Local Distributors

Central-Eastern Region -
Sample Excavating Co. Inc.
Mike Sample - (443) 807-8639
sample415@yahoo.com 

Southern Region -
Outback Porta-Jon, Inc.
Steve Wilson- (410) 257-1600
wilson05@comcast.net

NSF 245

Under Field

Verification

MicroFAST Manufacturer
Bio-Microbics, Inc.
http://www.biomicrobics.com  

Local Distributors

Eastern Region -
Gillespie & Sons Inc.
Jim Gillespie - (410) 778-0900
jimg@gillespieandson.com

Central Region -
Maryland Concrete Septic Tank Inc.
Trent Glace- (443) 491-3598
trent@marylandconcreteinc.com
ETV
Under Field

Verification 
Nitrex  Manufacturer
Lombardo Associates, Inc.
www.lombardoassociates.com 

Local Distributor -  
Lombardo Associates
Pio Lombardo- (617) 964-2924
pio@lombardoassociates.com
Other 3rd Party  Under Field

Verification

Add-on anoxic filter with carbon source, to be coupled with a nitrification unit.

Norweco Hydro-Kinetic
Model 600 FEU

  Manufacturer
Norweco, Inc.
www.norweco.com  

Local Distributor

Eastern Shore -
Towers Concrete Products
John Short- (443) 786-0594
btowers62@gmail.com

NSF 245

And other

Under Field

Verification


The Maryland Department wants to thank you for partaking in this important program.

Contact Info

If you have additional questions or would like more information, please contact the Wastewater Permits Program, Onsite Systems Division at 410-537-3778.

Related Links 

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