License Information

Per Wis. Admin. Code § 305.66, a person who holds a certification issued by the Department as a certified POWTS Inspector may inspect privately owned wastewater treatment systems, POWTS, for the purpose of administering and enforcing the provisions of Wis. Admin. Code § SPS 381 to 387 as an authorized representative of the Department or a local governmental unit.

A person who inspects privately owned wastewater treatment systems as a certified POWTS Inspector shall:

• Maintain a record of the inspections made including the dates and the findings of the inspections; 
• Provide a copy of the inspection record to the privately owned wastewater treatment system owner or his or her agent;
• Make available to the Department upon request his or her inspection records.

Application for License

Reinstate a POWTS Inspector Certification that has been Expired more than 4 Years

1. Complete requirements for the method you are applying under (see Form #3151 for more information).
2. Submit an application, supporting documentation and fee:
• Application for POWTS Inspector Certification (Form #3151)
• See Form #3151 for total fee for the method you are applying under

Renewal Information

Requirements

• FEE (See Renewal Dates and Fees)
• 24 Hours of Continuing Education
• To view your current CE hours completed see the License Look-Up page, enter your credential number, and click on your name.
• To view approved courses for CE see the Trades Continuing Education Course Provider List.

Renewal Methods

• Online Log In: Renew a Credential Online
• Mail Renewal Reminder/Application to: 

Department of Safety and Professional Services

Trades Credentialing Unit
PO Box 78780
Milwaukee, WI  53293-0780

If you have questions regarding your renewal, please email DSPSCredTrades@wisconsin.gov.

When mailing your renewal, please allow up to 21 calendar days [per Wis. Admin. Code SPS 305.04 (1)] from the date your payment is processed to receive an update regarding your renewal.