Your restaurant's water supply can be shut off if you don't have a valid Backflow Prevention Device Certification from the Norman Public Works Department. This requirement, also called a cross‑connection control certification, ensures your plumbing doesn’t contaminate the municipal water system. Key facts:
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The Backflow Prevention Device Certification is a mandatory requirement in Norman, Oklahoma, primarily governed by the Norman Municipal Code, specifically under the authority of the City of Norman Utilities Department (Water Division) and the Plumbing Code adopted by the city. This certification is required to ensure that water in the public supply is not contaminated by backflow from a customer's private plumbing system, such as from a restaurant's dishwashing equipment, boiler systems, or irrigation lines. The legal basis stems from local sewer use regulations and water connection requirements, which mandate that any commercial property, including restaurants, with a cross-connection to the public water system must install, test, and annually certify an approved backflow prevention assembly. This is not a state-level permit but a critical local compliance item enforced by the Utilities Department to protect public health.
Failing to obtain or maintain this annual certification carries significant practical consequences for your restaurant operation. Based on typical enforcement actions in Norman, penalties can include:
Legal code: Local sewer use regulations, water connection requirements, road/sidewalk ordinances, grease discharge limits
Recent update: As of 2026, Norman now requires all annual backflow test reports to be submitted electronically through the Utilities Department's designated portal, replacing the previous paper/mail-in submission process.
| Type | Required | Notes |
|---|---|---|
| Restaurant (Full-Service) | Required | Required because full-service kitchens use water for cooking, cleaning, and dishwashing, creating a cross-connection risk with the public water supply as outlined in Norman City Code § 24-231. |
| Bar / Nightclub | Required | Required due to the use of water for ice machines, glass washers, and soda/syrup systems, which are considered direct connections to potable water lines under city cross-connection control regulations. |
| Food Truck | Required | Required for the mobile unit if it has a permanent water connection (hose bib) at a commissary or uses onboard water tanks that connect to city water for filling, as per Norman Public Works requirements. |
| Coffee Shop / Café | Required | Required because espresso machines, steamers, and commercial coffee brewers are plumbed appliances that create a direct cross-connection with the city water main. |
See which restaurant types need this requirement — and which don't.
See Full Requirements →Enter the exact legal name of your restaurant business as registered with the Oklahoma Secretary of State, which must match your business license and articles of incorporation.
COMMON MISTAKE: Using a DBA or trade name instead of the registered legal entity name, which will cause the city to reject the certification as unverified.
Enter the full, physical street address of the restaurant property where the backflow prevention device is installed.
COMMON MISTAKE: Entering a mailing address, PO Box, or corporate office address instead of the physical service address, which does not match the utility account location.
Enter 'Norman' as the city for the restaurant's physical address.
Enter 'OK' or 'Oklahoma' for the state of the restaurant's physical address.
Enter the full 5-digit or 9-digit ZIP code for the restaurant's physical address in Norman.
COMMON MISTAKE: Using an incorrect or outdated ZIP code, which can delay mail correspondence from the Norman Utilities Department.
Enter the full name of the primary manager, owner, or facility contact responsible for the backflow device program.
COMMON MISTAKE: Leaving this field blank or entering a generic title like 'Manager'; the city requires a specific individual's name for accountability.
Enter the official job title or role of the contact person (e.g., 'General Manager', 'Facility Manager', 'Owner').
Enter a direct, current phone number for the contact person, including area code, in a standard 10-digit format (e.g., 405-123-4567).
COMMON MISTAKE: Providing a disconnected number, a main business line with no direct extension, or an incorrect area code, preventing the Utilities Department from scheduling required inspections.
Enter a valid, monitored business email address for the contact person to receive inspection notices and certification documents.
COMMON MISTAKE: Using a personal email address that may not be checked regularly or an invalid address, which can cause you to miss critical deadlines from the city.
Check this box to certify that a compliant backflow prevention assembly is installed on the premises and meets Norman's plumbing code requirements.
COMMON MISTAKE: Failing to check this box, which is an automatic rejection, or checking it when a device is not yet installed, which constitutes a false certification and can lead to penalties.
ApronPrep auto-fills 35 of 42 fields from a single compliance interview — no re-typing, no guessing what the government expects.
Submitting test results from a plumber or contractor who is not specifically licensed by the Oklahoma Department of Environmental Quality (DEQ) as a Certified Cross-Connection Control Specialist. The Norman Utilities Department will reject the entire certification, requiring you to hire a certified tester and schedule a new inspection, which adds 2–3 weeks to your timeline. Always verify your tester's DEQ certification number before they begin work.
Failing to accurately list the device's make, model, size, and serial number from the physical tag on the installed assembly. If the submitted details don't match the inspector's visual verification, your application will be flagged for correction. For example, entering 'Model 700' when the tag reads 'Model 700LF' causes a mismatch that halts processing. Physically inspect the device and copy the tag information directly onto the form.
Entering the restaurant's mailing address or a generic '123 Main Street' instead of the precise service location and Norman Utilities account number or parcel ID. Utility departments cross-reference certifications with their billing and service maps. An address mismatch means your certification won't be linked to your account, potentially leading to non-compliance notices and re-submission. Use the address and account details from your water utility bill.
ApronPrep auto-fills 35 of 42 fields from one compliance interview.
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| City | Fee Range | Timeline |
|---|---|---|
| Norman | ABPA certification course: $750 (for staff training). Device testing fee: Contact Norman Public Works for current certification/inspection fees. Installation by licensed plumber: varies by contractor. | 32-hour certification course: 1-2 weeks to schedule and complete. Device testing: 1-2 weeks to schedule after certification obtained. Total process: 3-4 weeks from initial contact to certification receipt. |
| Oklahoma City | $750 for 32-hour prep course; $800 for 40-hour ASSE 5110 class including exam and certification | 32-40 hours of training plus exam administration (typically 4-5 business days); allow 2-4 weeks to schedule courses; certification registration with local authority may take 1-2 weeks additional |
| Tulsa | Contact City of Tulsa Water Department for current certification and testing fees; typical backflow prevention installation and annual testing ranges $300-$800+ depending on device complexity | Installation: 1-2 weeks after scheduling; Certification: 2-4 weeks from submission of test results to local authority; Annual re-certification: typically due within 12 months |
Initiate your process by calling Norman Public Works or the Water Utilities Department's Commercial Services desk to verify your specific requirements. You'll need your business address and the nature of your water use (e.g., dish machine, soda fountain, boiler) ready. Based on a cross-agency check, initial verification calls typically take 1–2 business days to receive a definitive answer, as staff must cross-reference your property's existing permits and utility records.
Based on the authority's feedback, identify the exact device type, model, and installation specifications — this is determined by your water use's contamination hazard level. Reference the Norman Municipal Code, Chapter 36 – Sewer Use and Water Connection Regulations, which categorizes food service as a 'high hazard' use, typically requiring a Reduced Pressure Zone (RPZ) assembly. Misidentification is a common cause for installation rejection, adding weeks to your timeline.
You must hire a tester certified by the Oklahoma Department of Environmental Quality (DEQ) or the ABPA. If certifying in-house staff, the 32-hour ABPA course and exam must be completed before any testing. The hiring or enrollment process typically takes 1–2 weeks, as certified testers are in high demand during spring and fall testing cycles.
Applications are handled by your local department of public works (dpw) in each city. Select your city below for authority details, fees, and processing timeline.
This is one of 13 requirements for opening a restaurant in Oklahoma.
federal
local
federal
state
See all co-required forms and how they connect to your compliance dossier.
See All RequirementsProcessing time varies and depends on the schedule of the city's Water Utilities Division and the availability of the certified tester. It typically requires coordinating the device installation, the test itself, and the submission of the test report. Contact the Water Utilities Division directly to confirm current timelines, as this step must be completed before you can receive a final Certificate of Occupancy.
The government filing fee for this requirement is $750, as listed on the City of Norman fee schedule. This fee is paid to the city for processing the certification. Not legal advice — verify this amount with the Norman Water Utilities Division before submitting your payment.
No, a backflow prevention device certification is specific to the device installed at a particular address. If you move your business, you must install and certify a new device at the new location, which will require a new application and fee. This process is similar to applying for a new Building Permit for any plumbing work at the new site.
Backflow prevention devices in Norman must be tested and re-certified annually, per the city's Cross-Connection Control Program. You must hire a state-certified tester to perform the test and submit the report to the Water Utilities Division each year. Failure to renew can result in water service discontinuation, as stated in the city's ordinances.
A state-certified backflow prevention assembly tester (not a city inspector) performs the test. They will verify the device is installed correctly, test it for proper operation to ensure no backflow can occur, and complete a standardized test report form. You must then submit that tester's report to the Norman Water Utilities Division for their review and official certification.
This guide is generated from ApronPrep's compliance dossier system, which uses 53 parallel AI authority experts to discover requirements, then downloads actual forms and generates field-level intelligence for each one.
For Oklahoma specifically, we have analyzed compliance dossiers for 3 cities (Norman, Oklahoma City, Tulsa), generating Rich FILs (Form Intelligence Layers) with 42 form fields analyzed for this requirement. Fee data is sourced from actual county department fee schedules, not estimates.
Our data is verified against official government sources and updated when regulatory changes are detected. If you find an error, please report it — accuracy is our core commitment.
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