How AI assistants choose who to recommend for backflow testing

1. What people actually asked
2. What your backflow testing page has to explain
3. What the assistants looked for before recommending anyone
4. Your backflow testing page checklist
5. Questions owners ask
6. How we got these numbers
7. See it on your own website

What people actually asked

We asked for backflow testing in three different ways. Here is each one, word for word, with how many of the 264 answers it produced between September 4 and October 14, 2026:

• “Looking for someone to do backflow testing in Tarpon Springs, FL 34689 in two weeks. Any recommendations?”96 answers, asked with five different timings: next month, in two weeks, sometime this month, before the end of the month and in the next few weeks
• “Who should I call for backflow testing in Seminole, FL?”88 answers
• “Backflow testing near me — I'm in 33713. Who do you recommend?”80 answers

Together, the 264 answers covered eight towns in Pinellas County: Clearwater, Dunedin, Largo, Palm Harbor, Pinellas Park, Seminole, St. Petersburg and Tarpon Springs. Each town came up in 33 answers. By assistant: ChatGPT 112, Claude 80 and Google AI Mode 72.

Customers also call it “backflow preventer testing”, “backflow certification”, “cross-connection testing” or “backflow preventer installation”, so use those words on the page as well.

The question underneath all of them

“What test and documentation will I receive?” Testing, repairs and submission of required records are separate responsibilities.

What your backflow testing page has to explain

For this job the paperwork matters as much as the test. Assistants kept telling customers to ask whether the tester files the report with the utility, and whether that is in the price. Some warned that late filing is a common problem. A page that says who submits the report, how and how quickly answers what customers kept asking. A sample report with the customer's details removed shows what they will receive.

Rules differ from one water provider to the next, and assistants often could not find them. Many told customers to call their utility for its approved tester list. A page should say which utilities the tester is registered with and that it confirms each customer's requirements, instead of leaving the customer to work that out.

Testing, repair and filing are separate pieces of work. Answers told customers to ask what happens if the device fails: whether the tester repairs it, what that costs and whether a retest is extra. The page should price the test on its own and explain the next step when a device does not pass.

What the assistants looked for before recommending anyone

We read all 264 answers to see what the assistants looked for before naming a company for backflow testing, what they told the customer to ask, and what they said they couldn’t find.

What the assistants told customers to ask

Most common first:

Is the tester currently certified?

Assistants told customers to ask for proof of a current backflow tester certification. Some noted a plumbing license alone does not show it, and that certification comes from training programs.

43% of the answers (114 of 264) brought this up.

Ask for the tester's Florida backflow certification and proof of insurance.

Who files the test report with the water utility?

Assistants kept telling customers to ask whether the tester files the report with the utility for them, and whether filing is in the price. Some warned that late filing is a common problem.

36% of the answers (94 of 264) brought this up.

Ask whether they file the report with the water utility for you.

When is the next test due?

Answers mentioned that utilities often require testing every year and send a notice when it is due. Some customers were working to a deadline and needed the test and report done in time.

31% of the answers (83 of 264) brought this up.

Ask whether they require annual testing and whether they keep a list of approved testers.

Can the tester handle this type of device?

Some answers told customers to ask whether the tester is certified for their type of assembly, often a residential irrigation device. Customers with a commercial property were asked to say so.

25% of the answers (67 of 264) brought this up.

Ask whether the tester is certified for your device type and whether they submit the result to your water utility.

Is the tester accepted by the customer's water provider?

Many answers told customers to check whether their utility keeps an approved tester list and whether the tester is on it. Assistants often could not find those lists and sent customers to call the utility.

24% of the answers (63 of 264) brought this up.

They should be able to confirm whether your tester needs to be on a city-approved list and where the report must be submitted.

What happens if the device fails?

Assistants told customers to ask what a repair would cost if the device fails, and whether a retest is extra. Customers wanted to know the full cost before booking a simple test.

14% of the answers (38 of 264) brought this up.

Ask what a repair would cost if the device fails.

What the assistants couldn’t find

In 39 of the 264 answers, the assistant said it couldn’t find or confirm something it needed about a company. By assistant: Claude in 39 of its 80, ChatGPT in 0 of its 112 and Google AI Mode in 0 of its 72. As we asked it, Claude usually says what it couldn’t confirm; ChatGPT and Google AI Mode seldom do, so these counts mostly show what Claude couldn’t find. Most often:

• A phone number or other way to reach the company: 19 answers
• A license or insurance it could check: 14 answers
• Reviews it could check: 9 answers
• Whether the company serves the customer’s town or ZIP code: 5 answers
• When the company could do the work: 3 answers
• A price or how the job is priced: 3 answers

Assistants most often could not find a phone number, and often could not confirm a tester's certification or whether it serves the customer's area. A page that shows current certification, the utilities served and a working number answers what they kept telling customers to check.

I couldn't confirm that any of them holds a backflow tester certification, so check that before you hire.

Where the assistants sent people

Each answer linked to the pages the assistant relied on. Of the 192 ChatGPT and Claude answers about backflow testing, this is how many linked at least once to each kind of site:

• A contractor’s own website: 99% (191 answers)
• A directory or review site such as Yelp, Angi or the BBB: 32% (61 answers)
• A manufacturer or home-improvement guide: 28% (54 answers)
• An official license lookup: 2% (3 answers)

A contractor’s own website was the page linked most often, so your site is usually what the customer is sent to read.

Google AI Mode works differently. In 19% of its 72 answers, the links opened Google’s own listing for a business rather than a website. There, your Google Business Profile is the page the customer sees, so it needs the same facts as your site.

The checks behind every recommendation, applied to backflow testing

Can the customer reach a person?

Phone numbers were what assistants most often could not find for this job. Some answers said a number came only from a search snippet and could not be confirmed.

19 of the 264 answers about backflow testing, 19 of them from Claude, said the assistant couldn’t confirm this. In our July–August study across eight trades, it cost a business its place in 147 of the 290 conversations where it came up.

Is your license current, and can it be checked?

Credentials were a major gap for this job. Answers told customers to ask for both the plumbing license and a current backflow tester certification, and to see proof.

14 of the 264 answers about backflow testing, 14 of them from Claude, said the assistant couldn’t confirm this. In our July–August study across eight trades, it cost a business its place in 103 of the 142 conversations where it came up.

What do recent customers say?

Assistants often found no reviews of backflow testers in the customer's area. Some cited a utility list that showed a tester's record of filing late.

9 of the 264 answers about backflow testing, 9 of them from Claude, said the assistant couldn’t confirm this. In our July–August study across eight trades, it cost a business its place in 139 of the 569 conversations where it came up.

Source: How we research what AI assistants recommend.

Your backflow testing page checklist

Work through this list on your backflow testing page. Each item answers something the assistants looked for above.

1. Use “backflow testing”, “backflow preventer testing” or “backflow certification” in the page title, the main heading and the first paragraph.
2. Show each tester's current certification and where it comes from, alongside your plumbing license.
3. Say that you file the report with the customer's utility, how you submit it, and how soon after the test.
4. Say how you schedule tests around a utility's deadline and whether you remind customers when the next one is due.
5. Name the device types you test, such as residential irrigation and commercial assemblies.
6. List the water utilities you are registered or approved with, and say that you confirm each customer's requirements.
7. Explain what you do when a device fails, how repairs are quoted and whether the retest is included.
8. Put a working local phone number and a way to book a test on the backflow page.
9. Show the plumbing license with a link to the state lookup, and each tester's current certification.
10. Link to your recent reviews and point to ones that mention timely testing and filing.

Going further: let assistants see real openings

For planned work like backflow testing, a useful opening says whether it is for an assessment or the job itself, and whether the customer’s address is covered.

Merchant Context builds custom integrations with scheduling software so customers and AI assistants can read your current availability. Where your system records the job type, service area, duration and crew capacity, the integration can show those details with each opening, so an assistant can match it to the request instead of guessing.

We scope each connection to the software and data you actually have. A displayed opening is not a confirmed booking: the customer still confirms through your normal booking process, and the information is only useful while it is fresh.

Source: Merchant Context: custom integrations in the AEO service · checked 2026-10-14.

Questions owners ask

Does a backflow tester file the report with the water utility?

Many do, but assistants told customers to ask, because utilities often require the tester to submit it and late filing is common. A page that says the tester files the report, and how quickly, answers one of the questions customers asked most.

What happens if a backflow device fails its test?

Answers told customers to ask whether the tester repairs the device, what that costs and whether a retest is extra. The page should explain the next step after a failed test and how repairs are quoted.

How do I know a backflow tester is accepted by my water provider?

Assistants told customers to check with their utility, since some keep an approved tester list. A tester's page should list the utilities it is registered with and say it confirms each customer's requirements.

Which AI assistants did you test?

ChatGPT, Claude and Google AI Mode. Between September 4 and October 14, 2026, they answered 264 questions about backflow testing: ChatGPT 112, Claude 80, Google AI Mode 72.

Will these changes guarantee a recommendation?

No. Nobody can promise that. These changes supply what the assistants were looking for in our research. Whether they move recommendations for your business is something to measure after they go live.

See it on your own website

Send us your website address and we’ll make a free preview of your homepage, rewritten so customers and assistants can find your backflow testing answers. You pay only if you accept it: $2,000 a month, month to month, with no build fee.

Get your free homepage preview

Source: Merchant Context: the current website offer · checked 2026-10-14.

Keep reading

• AI search optimization and websites for plumbing companies.
• Which services need their own page on a contractor website?