In Butler County, Iowa, which covers Allison, we have measured 3,169 parcels on septic and 3,838 on sewer. That is a county measurement. We do not hold a septic count for Allison on its own and this page does not estimate one.
Allison is a city in Butler County, Iowa. The Census Bureau puts its internal point at 42.751986, -92.795719 and its land area at 2.93 square miles. Septic permitting and record keeping happen at the county level, not the city level, which is why every figure below is attributed to the county and linked back to the county page it came from.
| County | Records we hold | Parcels on septic | Parcels on sewer | County records portal | Searchable without an account |
|---|---|---|---|---|---|
| Butler County | 154 | 3,169 | 3,838 | county portal | no account needed |
Our collection for Butler County, Iowa is small, at 154 septic records. Treat it as a starting point for a Allison property rather than a search that settles the question. The county is genuinely mixed: 3,169 of 7,007 classified parcels are on septic and the rest are sewered. Which side of that line a Allison address falls on is worth establishing before anything else. The county publishes a records portal that we were able to search without creating an account, which makes checking a specific parcel something you can do yourself in a few minutes.
Septic is one subject with very different jobs inside it. These go straight to the page that does yours.
| If you are a | Go to | Because it covers |
|---|---|---|
| Homeowner | Septic pumping in Allison | keeping the system you have working |
| Buyer or seller | Buying or selling in Allison | what to pull and check before closing |
| Realtor | Buying or selling in Allison | the same records a seller needs on file |
| Designer or engineer | Septic design in Allison | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Allison | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Allison | tank access, lids and service interval |
| Inspector | Septic inspection in Allison | what gets checked and what a failure means |
| Land investor | Septic installation in Allison | whether raw land can take a system at all |
No. We measure septic and sewer at parcel level and roll it up by county. In Butler County, Iowa, which covers Allison, we have measured 3,169 parcels on septic and 3,838 on sewer. That is a county measurement. We do not hold a septic count for Allison on its own and this page does not estimate one.
Allison is in Butler County, Iowa.
From the Census ZCTA-to-place relationship file, with the share of Allison’s land area that falls in each. A ZIP is not a place boundary and the two only ever partly agree, which is exactly why both pages exist.
Straight-line distance from the Census internal point of Allison.
Parcel Perfect generates a code-shaped septic design and as-built style drawing for a parcel from the records and site data we hold, and shows every parcel we have classified as septic or sewer on one map. Both are open to use for any parcel in Butler County, Iowa.