In Rock County, Wisconsin, which covers Janesville, we have measured 10,702 parcels on septic and 47,138 on sewer. That is a county measurement. We do not hold a septic count for Janesville on its own and this page does not estimate one.
Janesville is a city in Rock County, Wisconsin. The Census Bureau puts its internal point at 42.684698, -89.01317 and its land area at 34.64 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 |
|---|---|---|---|---|---|
| Rock County | 0 | 10,702 | 47,138 | county portal | no account needed |
We have not yet collected septic documents from Rock County, Wisconsin, so for a Janesville property the county's own file is currently the only route. This page is about getting you to it, not about pretending we hold something we do not. The county is predominantly sewered: only 10,702 of 57,840 classified parcels are on septic. Septic properties near Janesville are the exception, which is exactly why owners often do not know they have one. 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 Janesville | keeping the system you have working |
| Buyer or seller | Buying or selling in Janesville | what to pull and check before closing |
| Realtor | Buying or selling in Janesville | the same records a seller needs on file |
| Designer or engineer | Septic design in Janesville | design flow, tank capacity, dispersal sizing |
| Installer or contractor | Septic installation in Janesville | site evaluation, permit sequence, inspection |
| Septic pumper | Septic pumping in Janesville | tank access, lids and service interval |
| Inspector | Septic inspection in Janesville | what gets checked and what a failure means |
| Land investor | Septic installation in Janesville | whether raw land can take a system at all |
These are real businesses we hold an address for, not a ranked or paid list. We take no fee and list nobody preferentially. Confirm current licensing with your county or state before hiring.
With an address in Janesville itself
| Business | Town on file | Phone | Rating |
|---|---|---|---|
| Epic Septic | Janesville | (608) 728-4511 | — |
| G&G Rooter | Janesville | (608) 247-9371 | 4.0 (8) |
No. We measure septic and sewer at parcel level and roll it up by county. In Rock County, Wisconsin, which covers Janesville, we have measured 10,702 parcels on septic and 47,138 on sewer. That is a county measurement. We do not hold a septic count for Janesville on its own and this page does not estimate one.
Janesville is in Rock County, Wisconsin.
From the Census ZCTA-to-place relationship file, with the share of Janesville’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 Janesville.
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 Rock County, Wisconsin.