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Passive Nitrogen Reduction Study

Contact the Research Team

  •  850-245-4250



    Mailing Address

    Bureau of Environmental Health 

    Water and Onsite Programs 

    4052 Bald Cypress Way, Bin A-08 

    Tallahassee, FL 32399-1710 

Final Legislative Report on the Florida Onsite Sewage Nitrogen Reduction Strategies Study

Final Legislative Report

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study tasks nitrogen logo

In 2008, the Florida Legislature directed the Department of Health to develop a tool box of cost-effective nitrogen reduction strategies for onsite sewage treatment and disposal systems (OSTDS). The project had two main areas of focus: development of passive nitrogen reduction technologies; and evaluation and prediction of the fate and transport of nitrogen from OSTDS. Objectives included:

  • Development of cost-effective, passive strategies for nitrogen reduction from onsite sewage systems
  • Characterization of nitrogen removal in the soil and shallow groundwater
  • Development of simple models to determine fate and transport of nitrogen from OSTDS in soil and groundwater

In January 2009, the Department in consultation with its Research Review and Advisory Committee (RRAC) contracted with a project team comprised of nationally recognized experts led by Hazen and Sawyer, P.C. The Department, and its RRAC, directed the Florida Onsite Sewage Nitrogen Reduction Strategies (FOSNRS) project, with participation from the Florida Department of Environmental Protection (DEP).

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Current Status

Gulf Coast Research and Education Center test site

As of December 2015, the contractor, in coordination with the RRAC, DEP, and the Department, has successfully completed the contractual work for this project. The Department has sumbitted the final Legislative report to the Governor, Speaker of the House, and President of the Senate on December 31, 2015.

before and after pic

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The resulting contract (1.9 MB pdf), March 2010 amendment (2.6 MB pdf), October 2010 amendment (1.5 MB pdf), January 2012 amendment (2.7 MB pdf), January 2012 renewal (1.6 MB pdf), and January 2012 amendment to the renewal (2 MB pdf) split the study into five main tasks.

The task descriptions, deliverables, and status for all project deliverables are available for download

Task A:  Technology Evaluation for Field Testing: Review, Prioritization, and Development  
The list below shows highlights of the task deliverables.  View all Task A deliverables.

Task B:  Field Testing of Technologies and Cost Documentation

View all Task B Deliverables

Task C:  Evaluation of Nitrogen Reduction Provided by Soils and Shallow Groundwater 

View all Task C Deliverables

Task D:  Nitrogen Fate and Transport Modeling

View all Task D Deliverables

Task E:  Project Management, Coordination, and Meetings

View all Task E Deliverables

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Public Education

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Contact Us

Please contact the Onsite Sewage Program office with any questions or comments.

*Note: This page contains materials in the Portable Document Format (PDF). The free Adobe Reader may be required to view these files.

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