Below you’ll find a chart of requirements for each county in Indiana. Please note that this information is current as of 2020 and we update details here as soon as we’re made aware of any changes. While we make the highest effort to ensure information here is always accurate, we strongly encourage you to check directly with your local health departments to ensure you’re following rules, certificate requirements, and testing requirements in that county.

County	For on-site sewage system installers, does your county require any of the following	If a certificate, registration or licensure is not required for OSS installers in your county, do you recognize the IOWPA certificate?	If a certificate, registration or licensure is required for OSS installers in your county, is there testing required?	If a certificate, registration or licensure is required for OSS installers in your county, is an IOWPA Installer certificate required?	If a certificate, registration or licensure is required for OSS installers in your county and an IOWPA Installer certificate is not required, do you accept an IOWPA Installer certificate in place of county testing?
Adams	Yes		Yes	No	Yes
Allen	Yes		Yes	No	Yes
Bartholomew	Yes		Yes	No	No
Benton
Blackford	Yes		Yes	No	Yes
Boone	Yes		Yes	No	Yes
Brown	Yes		Yes	No	No
Carroll	Certification		No	Yes
Cass
Clark	Yes		Yes	No	Yes
Clay	Yes		No	No	No
Clinton	No	Yes
Crawford	Yes		Yes	No	Yes
Daviess	Yes		Yes	No	Yes
Dearborn	Yes		Yes	No	Yes
DeKalb	Yes		Yes	Yes
Delaware County	Yes		No	No	Yes
Dubois	Yes		No	No	No
Elkhart	Yes		Yes	No	Yes
Fayette	Yes		No	No	No
Floyd	Yes		Yes	No	Yes
Fountain/Warren	No	Yes
franklin	No	No
Fulton	Yes		Yes	No	Yes
Gibson	No	Yes
Grant	Yes	Yes	Yes	No	Yes
Greene	Yes		Yes	No	Yes
Hamilton	Yes		No	No	No
Hamilton-Fishers	Yes
Hancock	No
Harrison	Yes		Yes	No	Yes
Hendricks	Yes		Yes	Yes
Henry	Yes		Yes	No	Yes
Howard	Yes		Yes	No	Yes
Huntington	No	Yes
jackson	Yes		Yes	No	Yes
Jasper	Yes		Yes	No	Yes
Jay	Yes		Yes	No	Yes
Jefferson	Yes		No	No	No
Jennings
Johnson	No	Yes
Knox
Kosciusko	No	Yes
LaGrange	Yes		No	No	Yes
Lake
Lake-Gary
LaPorte	Yes		Yes	Yes
Lawrence	Yes		Yes	No	No
Madison	No	Yes	No	No	No
Marion	Yes		Yes	Yes
Marion	Yes		No	Yes
Marshall	Yes	Yes	Yes	No	Yes
Martin	No	Yes
Miami	Yes		Yes	No	Yes
Monroe	Yes		Yes	No	No
Montgomery	Yes		Yes	No	Yes
Morgan	Yes		Yes	No	Yes
Newton
Noble	Yes		No	No	Yes
Ohio	No	Yes
Orange	Yes		Yes	No	Yes
owen	No	Yes
Parke	No	Yes
Perry	No	Yes
Pike	No	Yes
Porter	Yes		Yes	Yes
Posey	Yes		Yes	No	Yes
Pulaski	Yes		Yes	No	Yes
Putnam	Yes for design only		Yes	Yes
Randolph	Yes		No	No	No
Ripley	Yes		Yes	No	Yes
Rush	Yes	Yes	No	No	Yes
Saint Joseph	Yes		Yes	No	Yes
scott	Yes		Yes	No	Yes
Shelby	Yes	Yes
Spencer	Yes		Yes	No	No
Starke	Yes		No	Yes
Steuben	Yes		Yes	Yes
Sullivan	No	Yes
Switzerland	Yes		Yes	No	Yes
Tippecanoe	No	Yes
Tipton	Yes		Yes	No	Yes
Union	Yes		No	No	Yes
Vanderburgh	Yes		No	No	Yes
Vermilion	No	Yes
Vigo	No	Yes
Wabash	Yes		Yes	No	Yes
Washington	Yes		Yes	No	Yes
Wayne	Yes	Yes	No	No
Wells	Yes		Yes	No	No
White
Whitley	Yes		Yes	No	Yes