Wisconsin backflow tester certification: Complete 2026 Guide

Official-source review: August 24, 2026

Wisconsin backflow tester certification: Wisconsin registers Cross Connection Control Assembly Testers. Applicants complete a Department-approved course meeting ASSE 5150, then apply through the state credentialing system; installation and plumbing alterations require the appropriate plumbing credential.

Fast answer: Complete an approved ASSE 5150 course, pass the required testing, apply for tester registration, maintain calibrated equipment, follow municipal reporting rules and use licensed plumbers for regulated installation or repair.

Wisconsin backflow tester certification authority experience exams fees insurance renewal — Wisconsin requirements summarized from the responsible agencies. Local permits, employers and certifying bodies may impose additional conditions.

What the Wisconsin backflow tester certification covers

Wisconsin registers Cross Connection Control Assembly Testers. Applicants complete a Department-approved course meeting ASSE 5150, then apply through the state credentialing system; installation and plumbing alterations require the appropriate plumbing credential.

Performance testing and reporting of cross-connection control assemblies.
Work only within the credential issued.
Obtain every permit and inspection.

Compare related occupations and states in the License Finder.

Wisconsin backflow tester certification requirements at a glance

Requirement	Current rule or route
Route	Cross Connection Control Assembly Tester registration after approved ASSE 5150 course, plus plumbing authority for installation or repair
Experience	Complete the approved course and meet the provider and DSPS eligibility requirements.
Exam	Pass the approved ASSE 5150 course examination and practical assessment.
Fees	Course, examination, registration, calibration and plumbing fees apply.
Insurance or bond	Maintain business, bond, workers compensation and project coverage required by the credential.
Renewal	Renew tester registration on the DSPS cycle.

Do not treat this table as an approval notice. The agency, certification organization or local jurisdiction makes the final eligibility decision and may request additional evidence.

How to complete the Wisconsin backflow tester certification process

Identify every individual and business credential triggered.
Complete required education and experience.
Obtain approval and pass each exam.
Submit applications, records and fees.
Complete insurance, business and permit requirements.
Renew on time and retain records.

Keep copies of every experience certificate, examination result, bond or insurance filing and payment receipt. Names and business entities should match across the application and supporting documents.

Important Wisconsin rules and boundaries

Individual and business credentials may be separate.
State licensing does not replace permits.
Related classifications are not interchangeable.
The responsible authority makes the final decision.

Wisconsin may separate the credential held by a worker from the contractor license held by the business, while preserving local authority over permits and inspections. Confirm every applicable layer before bidding, advertising or beginning regulated work.

Wisconsin backflow tester certification cost and renewal

Budget separately for training, exams, applications, insurance, business filings and permits.

Renew individual and business credentials separately and verify current fees.

Government charges are only part of the expected cost. Training, examination preparation, fingerprints, surety premiums, insurance, equipment calibration and local permits can add to the total.

Wisconsin backflow tester certification checklist

Confirm that this credential matches the exact work you will perform.
Check whether the applicant is an individual, sole owner or separate business entity.
Collect experience and training records before submitting the application.
Use the current official form and fee schedule.
Complete every required examination or approved certification route.
File bonds, insurance and fingerprints when applicable.
Check county, city, water supplier and building-permit rules.
Save the expiration date and renewal requirements.

Frequently asked questions

Is this credential statewide?

The principal credential is statewide, but local permits and inspections remain separate.

Is an exam required?

Pass the approved ASSE 5150 course examination and practical assessment.

When does it renew?

Renew tester registration on the DSPS cycle.

Are permits separate?

Yes.

Official sources used

Verified licensing details

Jurisdiction: state license, certification or registration plus permits, depending on scope
Licensing authority: Wisconsin Department of Safety and Professional Services
Fees: Course, examination, registration, calibration and plumbing fees apply.
Experience: Complete the approved course and meet the provider and DSPS eligibility requirements.
Exams: Pass the approved ASSE 5150 course examination and practical assessment.
Insurance or bond: Maintain business, bond, workers compensation and project coverage required by the credential.
Continuing education: Maintain registration, calibration and any required refresher training.
Renewal period: Renew tester registration on the DSPS cycle.

Official sources

Official sources last checked August 23, 2026.

Requirements can change and local rules may apply. Confirm the current requirements with the official authority before paying a fee or beginning work.