Official-source review: August 24, 2026
Louisiana backflow tester certification: Licensed Louisiana plumbers and landscape irrigators can add the Water Supply Protection Specialist endorsement after a 40-hour tester certification. The endorsement authorizes plumbers more broadly; an irrigator endorsement is limited to irrigation systems. Tester-only applicants follow LDH guidance.
What the Louisiana backflow tester certification covers
Licensed Louisiana plumbers and landscape irrigators can add the Water Supply Protection Specialist endorsement after a 40-hour tester certification. The endorsement authorizes plumbers more broadly; an irrigator endorsement is limited to irrigation systems. Tester-only applicants follow LDH guidance.
- Testing, installing and servicing backflow assemblies within the credential and water-system approval.
- Work only within the credential issued.
- Obtain every local permit and inspection.
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Louisiana backflow tester certification requirements at a glance
| Requirement | Current rule or route |
|---|---|
| Route | Water Supply Protection Specialist endorsement for licensed plumbers or irrigators, or LDH-approved tester route |
| Experience | Hold an eligible Louisiana plumber or landscape-irrigator license for the WSPS endorsement. |
| Exam | Complete the accepted written and practical tester certification; ASSE and ABPA certifications are accepted by SPBLA. |
| Fees | Training, examination, endorsement, certification, calibration and utility enrollment costs apply. |
| Insurance or bond | Maintain every insurance, bond or financial requirement attached to the individual, company and project. |
| Renewal | Maintain both the underlying professional license and WSPS or tester approval. |
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 Louisiana backflow tester certification process
- Identify the individual, contractor and business credentials.
- Complete the required education and documented experience.
- Obtain approval and pass each required examination.
- Submit the application, supporting records and current fee.
- Complete insurance, bond, business and permit requirements.
- Renew on time and retain compliance 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 Louisiana rules and boundaries
- Individual and company credentials may be separate.
- State licensing does not replace local permits.
- Related classifications are not interchangeable.
- The responsible authority makes the final eligibility decision.
Louisiana 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.
Louisiana backflow tester certification cost and renewal
Budget separately for applications, examinations, training, insurance, bonds, business filings and permits.
Renew individual, company and specialty credentials 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.
Louisiana 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 business licensing, permits and inspections still apply.
Is an exam required?
Complete the accepted written and practical tester certification; ASSE and ABPA certifications are accepted by SPBLA.
When does it renew?
Maintain both the underlying professional license and WSPS or tester approval.
Are local permits separate?
Yes.
Official sources used
Verified licensing details
- Licensing authority
- State Plumbing Board of Louisiana and Louisiana Department of Health
- Fees
- Training, examination, endorsement, certification, calibration and utility enrollment costs apply.
- Experience
- Hold an eligible Louisiana plumber or landscape-irrigator license for the WSPS endorsement.
- Exams
- Complete the accepted written and practical tester certification; ASSE and ABPA certifications are accepted by SPBLA.
- Insurance or bond
- Maintain every insurance, bond or financial requirement attached to the individual, company and project.
- Continuing education
- Complete the 40-hour initial tester certification and current recertification.
- Renewal period
- Maintain both the underlying professional license and WSPS or tester approval.
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.