Arizona backflow tester board: certification, costs, and timeline

Last updated 2026-08-18

Do you need a license to be a backflow tester in Arizona?

No, Arizona does not issue a state backflow tester license. The Arizona Department of Environmental Quality (ADEQ) is the board that oversees cross-connection control. ADEQ requires that all backflow prevention assembly testers be certified by a department-approved organization. In practice, that means you must hold a current certification from the American Society of Sanitary Engineering (ASSE), the American Backflow Prevention Association (ABPA), or another ADEQ-recognized testing body ^[1][2].

Once you have that certification, you can legally test backflow assemblies throughout the state. There is no separate state exam, no application to ADEQ, and no annual renewal fee paid to the state. The certification is your license. Local water suppliers may have their own registration requirements, but the statewide rule is certification-based. ADEQ’s Cross-Connection Control Program website states: “All testers must be certified by a department-approved organization” ^[1].

So the short answer: you don't need a license from a state board, but you absolutely need a certification from a recognized national body. Without that card, you cannot test legally. The good news is the process is straightforward and entirely handled by the training provider, not a bureaucratic state agency.

What is the Arizona backflow tester board?

The board is the ADEQ itself. Specifically, the Safe Drinking Water Branch’s Cross-Connection Control Program. They enforce Arizona Administrative Code R18-4-214, which requires public water systems to have a cross-connection control program and to use certified testers ^[2]. ADEQ does not run its own certification program. Instead, it recognizes third-party certifications. The department maintains a list of approved testing organizations, but practically, ASSE 5110 and ABPA tester certifications are the standards. If you have one of those, you are good to go.

So the ‘board’ is ADEQ, but the certification authority is the national organization that issued your card. This is a classic case of a state using a private certification as a regulatory requirement. It means you don’t deal with a state board for licensing; you deal with the certification body and then just show your card to water suppliers. The regulation is clean: no state bureaucracy, just a recognized certification. However, some water suppliers may require you to register with them directly, often for free. That’s just a local database entry, not a license.

How to get certified: the real path

To become a backflow tester in Arizona, you need to complete a certification course and pass a written and practical exam. The most common route is the ASSE 5110 Tester Certification. This course is offered by training providers approved by ASSE, often in partnership with industry groups like the Arizona Backflow Prevention Association (ABPA) or local community colleges ^[3]. The course covers theory, regulations, and hands-on testing of backflow prevention assemblies. You’ll learn to use a differential pressure gauge, troubleshoot devices, and document results.

The exam includes a closed-book written test and a practical skills evaluation where you must demonstrate testing procedures on multiple assemblies. Most providers offer the course over five days, with the exam on the last day ^[4]. You must bring your own test kit. ASSEPath sells a $149 ASSE 5110/5115 Tester Kit that includes the required gauge and fittings, but you can also buy gear elsewhere. The kit is a one-time purchase, and you’ll need it for the course and for every job afterward.

Once you pass, you receive a certification card valid for three years. There is no state application to fill out. You simply start testing and keep your certification current. The whole process is designed to be fast and practical. If you already have experience, you can sometimes challenge the exam, but most people take the full course.

How much does backflow tester certification cost in Arizona?

Costs come in three parts: the course fee, your test equipment, and gauge calibration. The certification course fee ranges from $400 to $800 depending on the provider and location. The Arizona Backflow Prevention Association lists a course fee of $600 for its ASSE 5110 course ^[4]. That covers instruction, materials, and exam fees. Your test kit: a basic ASSE 5110 test kit costs around $149 to $300. The ASSEPath kit is $149, one-time. You’ll also need to have your gauge calibrated annually. Calibration costs $100 to $200 per year. Some providers include the first calibration free with the kit purchase; otherwise, you’ll pay a calibration shop.

So total first-year costs: $600 course + $149 kit + $150 calibration = $899. After that, you’ll only pay for recertification every three years (about $300, $400) and annual calibration. The chart below breaks down the initial outlay. These numbers are averages; your actual cost may vary by $100, $200 in either direction depending on the trainer and where you get your kit and calibration.

How long does it take to become a backflow tester in Arizona?

The certification course is typically five days long, Monday through Friday, 8 a.m. to 5 p.m. That includes classroom and hands-on training ^[4]. The exam is on the last day. If you pass, you walk out with a temporary certification. The permanent card arrives in the mail within a couple of weeks. Most people spend a few evenings studying before the course, but there’s no required prerequisite. So the total time investment is about one to two weeks from registration to certified tester.

If you fail the exam, you can retake it, usually within a few weeks. That adds time, but the course itself is fast. The real delay is waiting for the next available course date. Some providers offer courses monthly, others quarterly. Plan on a month or two from decision to certification if you need to schedule. Once you’re certified, you can start testing immediately. There is no waiting period for a state approval.

Maintaining your certification

Your ASSE 5110 certification is valid for three years. Before it expires, you must recertify by taking a refresher course and passing the exam again. Recertification courses are shorter, typically two days, and cost $300 to $400 ^[4]. You also need to have your test gauge calibrated annually. Keep records of calibration and testing. Arizona does not require continuing education units (CEUs) beyond the recertification, but some local water purveyors may ask for proof of recent calibration.

If you let your certification lapse, you have to retake the full initial course. So set a calendar reminder at the 30-month mark. The recertification exam is similar to the initial one, but the course is condensed. Plan to spend $150 on calibration each year. The only ongoing paperwork is the calibration certificate and your test reports; no state filing required.

Arizona backflow tester equipment: what you need

Beyond the test kit, you’ll need a few other items. The minimum is a differential pressure gauge, hoses, and adapters. The ASSE 5110 standard specifies the gauge accuracy and range ^[3]. You’ll also need a laptop or smartphone for digital reporting. Many water agencies now require electronic test reports. You can buy a basic kit for $149, or a more rugged kit for $300. Don’t skimp on the gauge: it’s your primary tool. Calibration is mandatory, and you can’t test with an uncalibrated gauge. Some testers also buy a backup gauge in case of failure.

The first year is the most expensive; after that, you just maintain. The ASSEPath kit is a one-time $149 purchase that meets the standard. You can find similar kits from other vendors. The important thing is that the kit is ASSE 5110 compliant. If you buy a used gauge, factor in the cost of immediate calibration.

Reciprocity and other states

Arizona has no formal reciprocity agreements for backflow tester certification. However, many states recognize ASSE 5110 certification. If you’re certified in Arizona, you can test in states like California, Colorado, and Florida with minimal additional paperwork, though each state has its own rules ^[5]. The key is that your ASSE certification is national. If you move to another state, you’ll need to check whether that state’s board requires a separate license or just accepts ASSE.

For example, California requires a county-level registration, but the ASSE certification is the prerequisite. Read our guides on backflow tester board in California, backflow tester board in Colorado, backflow tester board in Florida, backflow tester board in Georgia, backflow tester board in Illinois, and backflow tester board in Alabama for detailed comparisons. Most states within the Southwest and West follow similar recognition patterns, but always verify with the local board.

Is it worth it? Income potential

Backflow testers in Arizona earn $50 to $150 per test, depending on the assembly type and location. Most testers can complete 4 to 8 tests per day. That puts potential income at $200 to $1,200 per day. Of course, you have to factor in travel, paperwork, and the seasonal nature of the work. Many testers are also plumbers or irrigation contractors who add testing to their services. The initial investment of under $1,000 is low compared to the earning potential.

If you’re just starting, the ASSEPath $149 kit helps keep upfront costs down. But don’t rely on this as a full-time gig without a solid customer base. It’s a great side hustle or bolt-on service. The demand is driven by water system compliance, and many testers build a route of commercial properties. The work is consistent in spring and fall, slower in winter. You can easily recoup your initial costs in the first week of testing.

Where to take the certification course in Arizona

The Arizona Backflow Prevention Association (ABPA) offers courses in Phoenix, Tucson, and other cities. You can also find courses through the Arizona Water Association, some community colleges, and private training companies. Check the ABPA website for upcoming dates ^[4]. The course fills quickly in spring, so register early. You’ll need to bring your own test kit. Some courses rent kits for an extra fee, but it’s better to buy your own.

The ASSEPath kit is accepted at all major training providers. If you’re outside the metro areas, look for online or hybrid courses, but the practical exam must be in person. The ABPA is the most reliable source for schedules. They also offer recertification courses. Prices are consistent across providers because the ASSE curriculum is standardized.

Next steps

1. Choose a certification: ASSE 5110 is the most widely accepted. 2. Buy your test kit. The ASSEPath $149 kit is a simple, one-time purchase. 3. Register for a course on the ABPA website. 4. Study the material, show up, and pass. 5. Start testing. Once certified, you can register with local water systems. They’ll ask for your certification number and insurance. You’ll need general liability insurance, typically around $500, $1,000 per year. That’s the last piece of the puzzle. With that, you’re in business.

No state application, no waiting. The whole process is driven by the training provider. You can go from zero to working tester in the time it takes to wait for the next class. Plan your schedule around the course dates, and you'll be testing within a month.

Frequently asked questions

Do you need a license for backflow tester in arizona?

No. Arizona does not issue a state backflow tester license. The Arizona Department of Environmental Quality (ADEQ) requires that you be certified by a department-approved organization, such as ASSE or ABPA. That certification is your authorization to test backflow assemblies. There is no separate state exam, application, or fee.

How much does backflow tester cost in arizona?

Total first-year costs average about $899. That includes a certification course ($600), a test kit ($149), and annual gauge calibration ($150). After the first year, you only pay for recertification every three years (~$400) and annual calibration. Prices vary by provider, but you can expect to stay under $1,000 to get started.

How long does backflow tester take in arizona?

The certification course takes five days, including the exam. If you pass, you are certified immediately, though the permanent card takes a few weeks to arrive. Total time from registration to working tester is typically one to two weeks, plus the wait for the next available course date. You can be testing within a month of signing up.

Can I test backflow assemblies without a certification in Arizona?

No. ADEQ regulations require all testers to be certified by an approved organization. Testing without a valid certification is a violation that can lead to fines and your tests being rejected by water suppliers. The only exception is if you are supervised by a certified tester in a training capacity, but you cannot sign off on reports.

What is the renewal process for backflow tester certification?

You must recertify every three years. The recertification course is two days and costs $300, $400. You must pass the exam again. You also need to keep your gauge calibrated annually. There is no state renewal form; you simply stay current with your certification body. If you let it lapse, you must retake the full initial course.

Does Arizona accept out-of-state backflow tester certifications?

Arizona does not have a formal reciprocity agreement, but if you hold a national certification like ASSE 5110 from another state, it is recognized by ADEQ. You would not need to take a new course. However, you must still meet any local water supplier registration requirements. Check with the specific supplier.

How do I find backflow testing jobs in Arizona?

Many testers work as independent contractors, building relationships with water utilities, plumbers, and property managers. You can register with local water systems as a tester, and they will direct property owners to you. Networking with the Arizona Backflow Prevention Association helps. Some testers start by offering their services to irrigation companies or commercial property managers.

What is the best backflow test kit for beginners?

Look for an ASSE 5110-compliant kit that includes a differential pressure gauge, hoses, and adapters. Kits range from $149 to $300. The ASSEPath $149 kit is a solid budget option. Avoid used gauges unless you know their calibration history. The kit must hold up to daily field use. A backup gauge is a good idea once you're established.

Do I need insurance to test backflow assemblies?

Yes, most water suppliers and commercial clients will require you to carry general liability insurance. A typical policy costs $500, $1,000 per year. It protects you if you damage a backflow device or property. You can often get a policy through a business insurer or a trade association like the ABPA.

How often do I need to calibrate my gauge?

Your differential pressure gauge must be calibrated annually. The calibration certificate must be current and available for inspection. Many water suppliers will not accept test reports from an uncalibrated gauge. Calibration costs $100, $200 and can be done by specialized shops. Some testers send their gauge in during the slow season to avoid downtime.

What is the difference between ASSE 5110 and ASSE 5115?

ASSE 5110 is for testers of backflow prevention assemblies. ASSE 5115 is for those who test and repair backflow devices. In Arizona, 5110 is sufficient for testing-only work. If you plan to repair assemblies, you'll need the 5115 certification. Most testers start with 5110 and upgrade later. The 5115 course is longer and covers repair procedures.

Can I get certified online?

Partially. The classroom portion may be offered online, but the practical exam must be taken in person. You cannot get a full certification without demonstrating hands-on testing skills. Some providers offer hybrid courses with online lectures and an in-person lab day. Verify with the provider that the course is ADEQ-accepted.

What happens if I let my certification expire?

If your certification expires, you must retake the full initial course. There is no grace period. You cannot test legally until you are recertified. To avoid this, plan to recertify at least 30 days before your expiration date. Most providers offer recertification courses regularly.

Is there a demand for backflow testers in Arizona?

Yes, especially in the Phoenix and Tucson metro areas. Water systems are required to have cross-connection control programs, and many commercial properties must test their backflow devices annually. The demand is steady, though seasonal. New testers can find work by partnering with existing plumbing companies or marketing directly to property managers.

Sources

1. ADEQ Cross-Connection Control Program: ADEQ requires all backflow testers to be certified by a department-approved organization.
2. Arizona Administrative Code R18-4-214: Public water systems must have a cross-connection control program and use certified testers.
3. ASSE 5110 Standard: The ASSE 5110 standard defines backflow prevention assembly tester certification requirements.
4. Arizona Backflow Prevention Association Training: ASSE 5110 certification course fee is $600, and the course is five days long.
5. ABPA Tester Certification: ABPA tester certification is recognized by ADEQ and other states.
6. ABPA Calibration Requirements: Annual gauge calibration is required for backflow testers.
7. AZ Backflow Calibration Pricing: Typical gauge calibration cost is $100, $200.
8. ASSEPath Product Page: ASSEPath sells a $149 one-time ASSE 5110/5115 Tester Kit.