Onsite Disposal Systems

Bay Restoration Fund 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 rigorous 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 Normalization 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 following 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

Fuji Clean CEN-Series

Manufacturer

Fuji Clean USA

www.fujicleanusa.com

 

Local Distributor

Bay Area Environmental

Don Jones – (410) 836-9206

manager@jonespumpservice.com

NSF 245

And other

Mean % Reduction of TN:

77%

 

Mean Effluent Concentration:

14.1 mg/l

 

Data & Analysis

Advantex®-
RT

Manufacturer
Orenco Systems®, Inc.
www.orenco.com/ 

Local Distributor 
Atlantic Solutions
Bob Johnson- 1(877)214-9283
bjohnson@septicsystems.net

Other
3rd Party

Mean % Reduction of TN:
76% 

Mean Effluent Concentration:
14.5 mg/l 

Data & Analysis 

Advantex®-AX20

Manufacturer
Orenco Systems®, Inc.
www.orenco.com/ 

Local Distributor
Atlantic Solutions
Bob Johnson- 1(877)214-9283
bjohnson@septicsystems.net

Other
3rd Party

Mean % Reduction of TN:
71% 

Mean Effluent Concentration:
17.2 mg/l

Data & Analysis 

SeptiTech®

Manufacturer
SeptiTech, Inc.
www.septitech.com 

Local Distributors
Eastern Region

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

Central Region
Bay Area Environmental
Don Jones - (410) 836-9206
manager@jonespumpservice.com

ETV
and
NSF 245

Mean % Reduction of TN:
67% 

Mean Effluent Concentration:
19.7 mg/l 

Data & Analysis 

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

Mean % Reduction of TN:

66%

Mean Effluent Concentration:

20.3 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:
21.4 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
Bay Area Environmental
Don Jones - (410) 836-9206
manager@jonespumpservice.com

ETV

Mean % Reduction of TN:
58% 

Mean Effluent Concentration:
25.4 mg/l

Data & Analysis 

Limited to households of 1 to 4 occupants and 3 bedroom or less

Singulair TNT & Singulair Green (plastic tank)

Manufacturer
Norweco, Inc.
www.norweco.com 

Local Distributors
Eastern Shore

Towers Concrete Products
Jeffrey Powell (800) 773-9128
btowers62@gmail.com

Southern Region
Superior Tank

Jeff Earnshaw- (301) 274-3772
superiortanknorweco@gmail.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 

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

Mean % Reduction of TN:

54%

 

Mean Effluent Concentration:

27.5 mg/l

 

Data & Analysis


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

​​Model

Contact Information

Certifications

MDE Field
Performance Analysis for Total Nitrogen

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
Bay Area Environmental
Don Jones - (410) 836-9206
manager@jonespumpservice.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
Jeffrey Powell- (800) 773-9128
btowers62@gmail.com

NSF 245
and Other

Under Field
Verification

Premier Tech

Ecoflo Coco Filter

ECDn model

Manufacturer

Premier Tech Aqua

https://www.ecoflobiofilter.com/waste-water-septic-tanks/maintenance.aspx

 

Maryland Representative

Premier Tech Aqua

Kyle Dierolf – (401) 739-6063

diek@premiertech.com

NSF 245

And other

Under Field Verification

Clearstream Wastewater Systems, Inc.

Model 500D

Manufacturer

Clearstream Wastewater Systems, Inc.

https://www.clearstreamsystems.com

 

Local Distributor

Alcat Precast, Inc.

Allen Farmer – (804) 815-8850

alcatprecast@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, Bay Restoration Fund Program, 410-537-3778.

Related Links 

​​​