In Indiana, onsite wastewater (septic) systems are regulated by Indiana Department of Health (IDOH), Environmental Public Health Division, Onsite Sewage Systems Program, which sets the statewide code, and permits are issued and inspections carried out by county or local health jurisdictions. Installing, replacing or repairing a septic system here means, in sequence: a site and soil evaluation, a design, a permit application, an inspection while the system is open, and a final as-built record once it is approved.
The state-level regulator is Indiana Department of Health (IDOH), Environmental Public Health Division, Onsite Sewage Systems Program (official program page). IDOH sets statewide standards, but the rule is administered by local boards of health through their local health officer/local health department, which issue permits (over 15,000 new-system permits and about 6,000 repair permits per year statewide) and may adopt more stringent local ordinances.
The statewide onsite-wastewater code is cited as 410 IAC 6-8.3 ("Residential Onsite Sewage Systems"); commercial systems under 410 IAC 6-10.1. We link the agency's own page above rather than restating specific numeric requirements from it, since those change by rule revision and by local amendment.
The order of operations is broadly consistent across the country, even though the specific numbers in each step vary by state and often by county. None of the figures below are specific to Indiana; treat this as the shape of the process, and get the actual numbers from the agency linked above or from the county office.
| Design | General residential system design does not require a specific state-issued design license under the reviewed material, but plans for facilities like RV parks and youth camps must be prepared by a licensed engineer or architect; soil evaluations for system design are performed by Registered Soil Scientists via the Indiana Registry of Soil Scientists (administered by Purdue University's Office of Indiana State Chemist). |
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Septic records in Indiana are generally held by the county or local health jurisdiction that issued the permit, not by the state agency, and are released under the state's public records law. We have not logged the specific statute name and response deadline for Indiana yet; check with the county office listed on its records page below, or with Indiana Department of Health (IDOH), Environmental Public Health Division, Onsite Sewage Systems Program.
We hold 1,653 septic records across 66 of 92 Indiana counties. Each county page below shows exactly where its records are kept and how many we hold.
| County | Records held |
|---|---|
| Rush | 168 |
| Miami | 142 |
| Huntington | 137 |
| Blackford | 125 |
| Ohio | 113 |
| Shelby | 76 |
| Daviess | 71 |
| Dearborn | 65 |
| Morgan | 58 |
| Delaware | 54 |
| LaGrange | 48 |
| Warrick | 34 |
| Boone | 33 |
| Porter | 32 |
| DeKalb | 30 |
| Wayne | 28 |
| Hendricks | 26 |
| Wells | 24 |
| Parke | 23 |
| Floyd | 21 |
| Lawrence | 21 |
| Ripley | 20 |
| Perry | 19 |
| Decatur | 18 |
| Cass | 16 |
| Johnson | 15 |
| Harrison | 14 |
| Gibson | 14 |
| Kosciusko | 14 |
| Greene | 14 |
| Fayette | 14 |
| St. Joseph | 13 |
| Grant | 12 |
| Clark | 12 |
| Madison | 10 |
| Posey | 9 |
| Whitley | 9 |
| Clinton | 8 |
| Wabash | 8 |
| Noble | 7 |
| Bartholomew | 7 |
| Newton | 7 |
| Jasper | 7 |
| Henry | 7 |
| Jay | 5 |
| Montgomery | 5 |
| Marshall | 5 |
| Union | 4 |
| Franklin | 4 |
| Fountain | 4 |
| Vigo | 3 |
| Steuben | 3 |
| Vermillion | 2 |
| Orange | 2 |
| Hancock | 2 |
| Brown | 1 |
| Tipton | 1 |
| Spencer | 1 |
| Pike | 1 |
| Jackson | 1 |
| Vanderburgh | 1 |
| Pulaski | 1 |
| Putnam | 1 |
| Benton | 1 |
| Marion | 1 |
| White | 1 |
Full Indiana county-by-county index · Open the parcel map
Indiana Department of Health (IDOH), Environmental Public Health Division, Onsite Sewage Systems Program. IDOH sets statewide standards, but the rule is administered by local boards of health through their local health officer/local health department, which issue permits (over 15,000 new-system permits and about 6,000 repair permits per year statewide) and may adopt more stringent local ordinances.
The sequence is a site and soil evaluation, a design sized from the evaluation and (under most state codes) bedroom count, a permit application, an inspection before backfill, and a final as-built filed once the system is approved. Exact numeric requirements are set by the agency's own code, not restated here.
Check with Indiana Department of Health (IDOH), Environmental Public Health Division, Onsite Sewage Systems Program, which administers licensing for onsite wastewater installers here.
Septic records are generally held by the county or district health office that issued the permit. See our county-by-county Indiana index for the specific office and portal in each county.
Regulatory information on this page was researched against official state agency sources and last verified 2026-08-31. It is informational only: the agency linked above is authoritative, and requirements can change. We are not lawyers, not a government body, and not affiliated with, licensed or certified by any agency named on this page.