Iowa has a real, statewide septic transfer-inspection requirement: Iowa's Time of Transfer law, in effect since July 1, 2009, requires most homes and buildings served by a private septic system to be inspected before the property is sold or transferred, so that substandard systems (no secondary treatment, or a failed secondary treatment component) get identified at the point of sale rather than left for the next owner to discover.
Law: Time of Transfer Inspection Law (Iowa Code 455B.172(11); IAC 567-69.2).
Timing: Inspection happens before the sale or transfer closes; a handful of transfer types are exempt, including court-ordered transfers, foreclosures, and transfers by eminent domain.
Who's responsible: A DNR-certified Time of Transfer inspector performs the inspection; the report is transmitted automatically to both the Iowa DNR and the county where the property sits.
Iowa Department of Natural Resources (DNR), Water Quality Bureau - primary local regulation by county boards of health. See the full Iowa septic regulation page for the permit sequence and licensing.
Wherever you're transacting in Iowa, the septic permit or as-built (where one exists) is almost always held by the county or district health office, not the state. How to find septic records before closing covers how to pull it; below is the county-by-county index of what we hold for Iowa.
| County | Records held |
|---|---|
| Linn | 33,142 |
| Polk | 1,529 |
| Pottawattamie | 748 |
| Scott | 713 |
| Johnson | 682 |
| Warren | 680 |
| Dubuque | 625 |
| Dallas | 557 |
| Muscatine | 444 |
| Poweshiek | 431 |
| Marion | 418 |
| Jasper | 400 |
| Lee | 391 |
| Clinton | 366 |
| Delaware | 362 |
| Madison | 355 |
| Black Hawk | 347 |
| Guthrie | 343 |
| Mills | 339 |
| Boone | 334 |
| Benton | 315 |
| Story | 311 |
| Clayton | 292 |
| Jones | 286 |
| Harrison | 272 |
| Bremer | 271 |
| Des Moines | 268 |
| Allamakee | 262 |
| Cedar | 245 |
| Washington | 234 |
| Jackson | 233 |
| Winneshiek | 231 |
| Woodbury | 230 |
| Iowa | 229 |
| Henry | 224 |
| Marshall | 224 |
| Buchanan | 215 |
| Webster | 213 |
| Appanoose | 210 |
| Wapello | 201 |
| Fayette | 175 |
| Plymouth | 160 |
| Sioux | 156 |
| Tama | 155 |
| Cerro Gordo | 155 |
| Butler | 154 |
| Hardin | 154 |
| Davis | 150 |
| Fremont | 150 |
| Jefferson | 145 |
| Mitchell | 143 |
| Floyd | 142 |
| Van Buren | 142 |
| Page | 140 |
| Louisa | 135 |
| Franklin | 132 |
| Grundy | 132 |
| Lucas | 131 |
| Monona | 127 |
| Shelby | 126 |
| Mahaska | 122 |
| O'Brien | 116 |
| Lyon | 114 |
| Hamilton | 111 |
| Chickasaw | 111 |
| Wright | 106 |
| Clay | 101 |
| Decatur | 100 |
| Clarke | 99 |
| Kossuth | 99 |
| Wayne | 95 |
| Howard | 95 |
| Crawford | 91 |
| Buena Vista | 90 |
| Emmet | 88 |
| Monroe | 88 |
| Montgomery | 81 |
| Hancock | 80 |
| Dickinson | 79 |
| Humboldt | 76 |
| Carroll | 74 |
| Winnebago | 74 |
| Cass | 73 |
| Union | 72 |
| Palo Alto | 71 |
| Calhoun | 67 |
| Adair | 61 |
| Taylor | 59 |
| Sac | 56 |
| Greene | 55 |
| Audubon | 54 |
| Cherokee | 53 |
| Worth | 51 |
| Pocahontas | 49 |
| Adams | 48 |
| Keokuk | 46 |
| Osceola | 34 |
| Ringgold | 30 |
| Ida | 28 |
Full Iowa county index · Iowa regulations · Iowa septic companies · Open the parcel map
Iowa's Time of Transfer law, in effect since July 1, 2009, requires most homes and buildings served by a private septic system to be inspected before the property is sold or transferred, so that substandard systems (no secondary treatment, or a failed secondary treatment component) get identified at the point of sale rather than left for the next owner to discover.
Iowa Department of Natural Resources (DNR), Water Quality Bureau - primary local regulation by county boards of health
At the county or district health office that issued the permit, in almost every case. See the county-by-county index on this page for Iowa, and our general guide to finding records before closing.
Reviewed 2026-08-31 against the official sources linked above (where a source is cited) or, where none is cited, left deliberately general. Laws, lender overlays and local ordinances change; confirm current requirements with the county or state agency, your lender, and a licensed inspector before you rely on this for a closing.