Illinois Backflow Tester Certification Requirements: 2026 Guide

Official-source review: August 26, 2026

Illinois backflow tester certification: Illinois requires backflow assemblies to be inspected at least annually by an approved Cross-Connection Control Device Inspector. CCCDI applicants must already be authorized to perform plumbing, complete approved hands-on training and obtain Agency approval.

What the Illinois backflow tester certification covers

Illinois requires backflow assemblies to be inspected at least annually by an approved Cross-Connection Control Device Inspector. CCCDI applicants must already be authorized to perform plumbing, complete approved hands-on training and obtain Agency approval.

• Inspection, testing, maintenance and repair of cross-connection control devices and assemblies.
• Work only within the issued credential scope.
• Obtain all local permits and inspections.

The underlying credential is explained in the Illinois plumbing guide.

Illinois backflow tester certification requirements at a glance

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 Illinois backflow tester certification process

1. Identify the exact state and local credential required.
2. Complete the published education and experience.
3. Pass each required examination.
4. Submit applications, identity records and fees.
5. Complete business, insurance and employment filings.
6. Obtain project permits and renew on time.

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 Illinois rules and boundaries

• CCCDI approval requires qualifying plumbing authority.
• Assembly testing does not replace the plumber or contractor credential.
• Annual reports go to the community water supply.
• Test-kit calibration and site logs are mandatory.

Illinois 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.

Illinois backflow tester certification cost and renewal

Budget separately for education, examinations, state and local licenses, insurance and project permits.

Renew each state and local credential separately and verify current charges before filing.

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.

Illinois 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?

It depends on the occupation. Illinois licenses several trades statewide and leaves others to local governments.

Is an exam required?

Course testing and approval requirements established by IEPA or its delegate.

When does it renew?

Maintain the plumber license and CCCDI approval; assemblies are tested at least annually.

Are local approvals separate?

Yes.

Official sources used

• IEPA CCCDI requirements
• Illinois Plumbing Code backflow rule
• IDPH plumbing program