​Private Onsite Wastewater Treatment Systems (POWTS)

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Electronic Safety and Licensing Application (eSLA) is now live for POWTS Plan Review. Customers must use eSLA to submit plan reviews/permits, as well as search the Public Lookup for this program area.

Visit esla.wi.gov to get started, or go to the Customer Information​ page for​ instructions on first-time login.​

The Division of Industry Services (DIS) Private Onsite Wastewater Treatment Systems (POWTS) Program protects public health and the waters of the state by regulating onsite wastewater treatment and recycling systems, and by promoting the use of the best available technology to provide onsite sewage treatment system solutions for property owners.​

DIS coordinates with local certified municipalities and counties which provide plan review for certain types of installations. If a municipality wants to become a delegated agent, please visit the Delegated Agents​ page.

Questions regarding the POWTS code can be sent to DSPSSBPowtsTech@Wisconsin.gov.

POWTS Continuing Education 

The POWTS program is offering a monthly POWTS Update via Zoom. Each update will provide one hour of continuing education credit for certain POWTS credentials. They will be free to attend but you must pre-register so you will receive a link to the meeting. The updates will be held the 2nd Tuesday of each month at 9:00 AM.​

​Register online here: https://boo​kwhen.com/wipowts

​In-Person soils training is also available from DSPS. Go to this website to see dates and locations and to get registered: https://bookwhen.com/wipowts​​ 

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Plan Reviews

Start at the Plan Review page for information about the types of plan reviews required and how to submit electronically. Also check the Delegated Agent List to see if you can submit your plan review to the local municipality in lieu of DIS.

​ Plan Which Can Only Be Submitted to DIS

  • POWTS owned by the State; facilities owned by the State and served by POWTS.
  • POWTS that will not completely utilize a component manual or approved plumbing products; designs which do not utilize an approved component manual (called "Individual Site Designs"); and experiments. 

​Plans Which Can Be Submitted to DIS or a Designated Agent​

  • POWTS that are completely designed according to a component manual or are approved plumbing products. Designs which do not utilize an approved component manual are called "Individual Site Designs."
  • Holding tanks that have a product approval and comply with a component manual.

​ Plans Which Should Be Submitted to the Local Government Unit

  • POWTS that serve a single one- or two-family dwelling utilizing an approved component manual and gravity distribution to an in-ground distribution cell.

​Visit Public Lookup​ on eSLA to find approvals for plumbing products.


Counties have the primary responsibility to inspect POWTS, with the exception of state-owned projects​​​.​​

Sanitary Permit Submittal Summa​ry 
​SBD-6499​Sanitary Permit Card can be ordered from the Green Bay Office
​Sanitary Permit Application (Submit to County) (PDF)
Sanitary Permit Application (Submit to County) (Word)
​SBD-6412​Soil Saturation Determination Report
SBD-6710​POWTS Inspection Report
​SBD-7987​Soil Saturation Determination Report (Hydrograph Method)
​Soil and Site Evaluation Report (PDF)
Soil and Site Evaluation Report (Word​)

​POWTS Application for Review (PDF)
POWTS Application for Review (fill-in)

Online Application for Review ​via eSLA 
​SBD-10842​Application for Registration of Privies Serving State-Owned Facilities
​SBD-9890X​Application for Review, Petition for Variance
Application for Plumbing Review​


​POWTS Brochure​​​​​
​Your Private Onsite Wastewater Treatment System Guidance Brochure
Maintenance Brochure
​Maintaining Your Septic System Brochure
Maintenance Program Brochure
​Information on Wisconsin's POWTS Maintenance Program
COVID-19 and the Impacts on Septic Systems
COVID-19 and Septic Systems
POWTS Components Manuals
Link takes you to eSLA to search for Products - Plumbing - POWTS Component Manuals​​
POWTS Flooding Guidance August 2016
What To Do After A Flood
Grass is Greener
Is the Grass Greener Over Your Septic System?
POWTS Inspector Handbook
Educational Handbook
Soil and Site Evaluation Handbook​
Educational Handbook
POWTS License Renewal Information​
​POWTS License Renewal Information

POWTS Standard Plan Pages Table of Con​tents​
General Instructions Index Pages Plot Plan Pages Dispersal Area Pages

In-Ground Gravity

In-Ground Pressure



Pressure Lateral Pages Tank Pages Management Plan Pages


Septic Smart for Homeowners
Septic system basics and how to protect your investment - 1 hour​
POWTS Update March 2022
Excavating and Trenching Safety by OSHA - 1 hour​
POWTS Update May 2022
WI DNR on Large POWTS and Non-domestic Wastewater​ - 1 hour​
POWTS Update October 2022
Electrical for POWTS​​ - 1 hour​
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