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Small Flow On-site Sewage Treatment Systems
The small flow on-site sewage treatment system (SFOSTS) is a new category of sewage treatment system (STS) established by Chapter 3718 of the Ohio Revised Code. Under the provisions of this law and rule 3701-29-21 of the Ohio Administrative Code (OAC), local boards of health may choose to assume authority for SFOSTS and in doing so must regulate SFOSTS permitted under their authority in accordance with the STS rules (OAC Chapter 3701-29) governing both household sewage treatment systems (HSTS) and SFOSTS.
Fact Sheet on SFOSTS – Change of Authority Issues: In jurisdictions where a local board of health does not assume SFOSTS authority, the Ohio Environmental Protection Agency (OEPA) will continue to have authority for these systems as well as all other wastewater systems except HSTS. The following fact sheet provides information on the transition of authority from OEPA in cases where SFOSTS authority is assumed by local boards of health. The table referenced in the fact sheet is also provided.
ODH/OEPA Fact Sheet on SFOSTS – Change of Authority Issues
SFOSTS Design Flow and Waste Strength - Table A-1
List of local health districts that have SFOSTS authority:
| Local Health District: |
Initiation Date: |
| Brown County |
March 19, 2007 |
| Clark County |
May 27, 2008 |
| Clermont County |
Jan. 1, 2007 |
| Columbiana County |
Jan. 1, 2007 |
| Coshocton County |
Feb. 5, 2007 |
| Cuyahoga County |
Jan. 20, 2007 |
| Delaware County |
June 1, 2007 |
| Erie County |
March 17, 2008 |
| Fairfield County |
Jan. 1, 2007 |
| Franklin County |
May 1, 2007 |
| Fulton County |
March 19, 2007 |
| Gallia County |
March 1, 2007 |
| Hamilton County |
April 1, 2007 |
| Highland County |
April 20, 2007 |
| Hocking County |
Jan. 1, 2007 |
| Holmes County |
June 15, 2007 |
| Jackson County |
June 12, 2007 |
| Jefferson County |
May 1, 2007 |
| Knox County |
Jan. 29, 2007 |
| Lake County |
May 21, 2008 |
| Licking County |
Feb. 1, 2007 |
| Logan County |
March 11, 2007 |
| Lucas County |
Jan. 1, 2007 |
| Richland County |
July 1, 2007 |
| Madison County |
July 1, 2009 |
| Meigs County |
March 12, 2007 |
| Montgomery County |
March 1, 2007 |
| Noble County |
March 1, 2007 |
| Pauding County |
March 1, 2007 |
| Pickaway County |
Jan. 1, 2007 |
| Pike County |
Feb. 1, 2007 |
| Perry |
Nov. 21, 2007 |
| Preble County |
March 1, 2007 |
| Stark County |
Feb. 1, 2007 |
| Summit County |
April 16, 2007 |
| Union County |
Jan. 1, 2007 |
| Warren County |
May 1, 2007 |
| Washington County |
April 7, 2007 |
| Wayne County |
Feb. 13, 2007 |
| Zanesville-Muskingum County |
April 1, 2009 |
Definition of SFOSTS – Paragraph (A) of OAC Rule 3701-29-21
"Small flow on-site sewage treatment system (SFOSTS)" means a system, other than a household sewage disposal system, that treats not more than one thousand gallons of sewage per day and that does not require a national pollutant discharge elimination system permit issued under section 6111.03 of the Revised Code or an injection well drilling or operating permit issued under section 6111.043 of the Revised Code. A structure or structures served by a SFOSTS shall include but is not limited to:
(1) Vacation rental cabins with multiple cabins served by an SFOSTS.
(2) A dwelling and an ancillary building both served by an SFOSTS where the ancillary building may be open to the public and is used by more than the residents of the dwelling.
(3) Two dwellings, including arrangements such as a dwelling and a detached garage with living space.
(4) A dwelling with a home business that may be open to the public, generates sewage in excess of the daily design flow or waste strength for an HSTS, and has no wastewater going to the SFOSTS other than sewage as defined in this rule.
Last Updated: 04/21/09
Last Reviewed: 11/04/09
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