Maryland Acidified Sushi Rice HACCP: What Your County Health Department Requires Before and After Approval

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Why Maryland Sushi Operations Deal With Their County Health Department, Not a State Agency

Many sushi restaurant operators assume that food safety compliance in Maryland works the same way it does in other states, where a central state agency issues permits and approves HACCP plans. Maryland’s structure is different in an important way: regulation of food service facilities, the category that covers restaurants, sushi bars, and other operations serving food directly to the public, is administered by each county’s health department under the Code of Maryland Regulations, COMAR 10.15.03.

The Maryland Department of Health sets the regulatory framework and provides oversight, but it is your county health department that issues your food service facility license, classifies your operation by priority level, reviews and approves your HACCP plan, conducts your routine inspections, and has authority over variances for specialized processes like acidified sushi rice. If you operate in Montgomery County, your county health department handles your HACCP approval. The same is true in Baltimore County, Frederick County, Anne Arundel County, Prince George’s County, and every other jurisdiction in the state. There is no single state-level office to submit a sushi rice HACCP plan to; your county is the right contact.

This structure has a practical implication that operators need to understand from the start: requirements, timelines, and HACCP plan templates can vary somewhat from county to county, even though the underlying regulations are the same statewide under COMAR 10.15.03. Some counties have detailed application guides and template HACCP plans for acidified sushi rice. Others require more development work by the applicant. Contacting your county health department’s food protection program early in the planning process is the only way to confirm exactly what documentation your specific county requires and how long its review process takes.

Maryland is also in the process of transitioning to the 2022 FDA Model Food Code. Until that adoption is finalized, COMAR 10.15.03 remains the controlling regulation for food service facilities. The sushi rice acidification requirements under the current rules are consistent with FDA Food Code principles, but specific procedural details, including documentation formats and variance language, reflect Maryland’s existing regulatory framework rather than the newer FDA code structure.

How Maryland Classifies Sushi Operations and Why That Classification Determines Your Inspection Frequency

Under COMAR 10.15.03.33C, every food service facility in Maryland is classified as high, moderate, or low priority based on the complexity of its food preparation processes, the types of food handled, and the potential for foodborne illness. This classification is not administrative labeling: it directly determines how often your facility is inspected and what type of inspection is conducted.

A sushi restaurant that acidifies rice and holds it at room temperature is classified as a high priority facility. High priority facilities involve complex food preparation processes with multiple steps, temperature-sensitive foods, and processes that require active monitoring to control hazards. Acidified sushi rice, as a process that deliberately removes cooked rice from temperature control using a chemical control instead, is exactly the type of specialized process that drives a high priority classification.

High priority classification means your facility receives more frequent inspections than moderate or low priority operations, including dedicated HACCP compliance inspections under COMAR 10.15.03.30. A HACCP compliance inspection is a specific inspection type that focuses on whether your HACCP plan is being correctly implemented: whether monitoring is happening at each CCP, whether records are being kept, whether corrective actions are documented, and whether the person in charge understands and is overseeing the plan. These are in addition to, not instead of, routine comprehensive inspections.

Your HACCP plan must be approved by your county health department before you begin food service at a new facility, or before you add acidified sushi rice to an existing facility’s operations. The plan must be kept within the food preparation area during all hours of operation, must be readily accessible to employees at all times, and must be updated whenever a change in food processes changes one or more critical control point. Under COMAR 10.15.03.34, the HACCP plan must also be reviewed and updated at a minimum of once every five years, and any changes must be submitted to and approved by the county health department before they are implemented.

The Critical Control Points Your Maryland County Health Department Expects to Find in Your Sushi Rice HACCP Plan

Your HACCP plan for acidified sushi rice must identify each step in the preparation process where a food safety hazard can be controlled, define the critical limit for that control, specify the monitoring procedure, document the corrective action when the limit is not met, and describe the verification activities and record-keeping procedures that demonstrate the plan is working. Maryland county health departments reference COMAR 10.15.03.02(20) for the definition of critical limits, and most county HACCP guidelines provide explicit examples of what a compliant sushi rice CCP entry looks like.

Finished pH at or below 4.2: The pH of 4.2 is the critical limit below which Bacillus cereus and Staphylococcus aureus, the pathogens of greatest concern in cooked rice held at room temperature, cannot grow to dangerous levels. Your HACCP plan must state this limit explicitly. Every batch of sushi rice must be tested after vinegar is incorporated and before the rice enters service, and the result must be recorded in your pH log with the batch time and the name of the person performing the test. A reading above 4.2 requires immediate corrective action before service proceeds.

pH meter calibration before each use: Calibration using buffer solutions of known pH values, typically pH 4.0 and pH 7.0, must occur before each production session and be documented in a calibration log. The calibration record and the pH log function as a pair: an inspector reviewing your pH readings will also look at whether the instrument used to take those readings was calibrated on the same day. Maryland county health inspectors conducting HACCP compliance inspections check both. Test strips are acceptable in some county jurisdictions if the margin of error is accounted for in your corrective action procedure; confirm the specific requirement with your county health department.

Corrective action for batches above pH 4.2: Your HACCP plan must define what happens when a batch tests above the critical limit. The standard protocol is to add additional vinegar and retest. If additional vinegar brings the pH to 4.2 or below, the corrective action, including the initial reading, the adjustment made, and the post-correction reading, must be documented in your pH log. If the batch cannot be brought below 4.2, it must be discarded or held under temperature control and treated as a standard time/temperature control for safety food for the remainder of service. Your corrective action protocol must be written into your approved HACCP plan in advance, not improvised at the service line.

Maximum room temperature holding time and time tracking: Your HACCP plan must specify the maximum time properly acidified sushi rice may be held at room temperature before disposal. Most Maryland county health department guidelines and the FDA Food Code framework support a maximum holding time of up to 24 hours for properly acidified rice at or below pH 4.2. Your procedure must include labeling each batch with its preparation time and ensuring rice is discarded at the end of the holding period. Time tracking is a monitoring step and must be documented.

Person in charge verification: Under COMAR 10.15.03.34, an employee involved in food preparation must be trained in HACCP procedures, and the person in charge is responsible for ensuring the HACCP plan is operating as intended. Your HACCP plan must designate a person in charge review requirement for pH logs, typically a daily review and initialing of log entries. This is a verification step, and Maryland HACCP compliance inspections specifically check whether person in charge verification signatures are present and current in your documentation.

Employee training records: Every employee involved in the acidification process must receive documented training on the hazards associated with cooked rice held at room temperature, the correct vinegar mixing procedure, the pH testing and calibration method, and the corrective action protocol. Training records are a required component of your approved HACCP plan under COMAR 10.15.03.34B and are reviewed during HACCP compliance inspections.

Updating Your HACCP Plan After Recipe Changes and Between Inspection Cycles

Maryland’s five-year mandatory review cycle under COMAR 10.15.03.34 is a floor, not a ceiling. Any change to your food processes or procedures that affects a critical control point requires a HACCP plan update and submission to your county health department before the change is implemented. For sushi operations, the most common triggers are changes in rice variety, vinegar brand or concentration, the ratio of vinegar mixture to rice, or the introduction of seasoned sushi vinegar products in place of plain rice vinegar.

These are not minor substitutions from a food safety standpoint. Different vinegar products have different acidity levels, and the equilibrium pH of your finished rice depends on the specific combination of rice variety, vinegar product, and mixing ratio you use. A recipe change that keeps the finished pH safely below 4.2 under your current validated process may push a different rice or vinegar combination above the critical limit. Testing a new recipe informally before contacting your county health department is appropriate, but operating the new recipe in service before your updated HACCP plan is approved is a violation of COMAR 10.15.03.34A(c).

Records must be maintained on-site and available for inspection at all times. Maryland county health department guidelines and the national Conference for Food Protection guidance both recommend retaining HACCP plan records, including pH logs, calibration records, corrective action entries, and person in charge verification signatures, for a minimum of six months. For a high priority facility inspected multiple times per year, this means your log binder should contain a running contemporaneous record of every production session, organized so that any specific date can be located and reviewed quickly during an unannounced inspection.

The Documentation Failures That Drive HACCP Compliance Inspection Findings in Maryland Sushi Operations

Maryland county health departments conduct HACCP compliance inspections specifically focused on whether an approved HACCP plan is being correctly implemented. These inspections are not general surveys of cleanliness and temperature holding: they are targeted reviews of your documented monitoring system. The consistent findings across HACCP compliance inspections of sushi operations in Maryland and nationally follow the same pattern.

The most common finding is a pH log that exists but contains gaps or incomplete entries. A log that covers recent weeks but has empty pages for earlier months does not demonstrate that monitoring occurred during those periods. Under COMAR’s requirement that the HACCP plan be followed as approved, blank log pages are treated as evidence that monitoring did not occur, not as evidence that the process was fine but was not recorded. The distinction matters: if a batch had a pH deviation and there is no record of it, there is also no corrective action record, and an inspector has no way to determine whether the batch was served to customers above the critical limit.

Calibration records that are absent or out of date are the second most common gap. A pH log showing readings from every service day is only as reliable as the calibration records showing the meter was in calibration when those readings were taken. A meter that drifts out of calibration produces readings that cannot be trusted, and a batch tested with an out-of-calibration meter is treated by inspectors as an unmonitored batch. Calibration logs and pH logs should be maintained together in the same binder and reviewed together during every HACCP compliance inspection.

The third finding is a HACCP plan that does not reflect current operations. Operations that changed their vinegar brand, switched rice varieties, or modified their mixing procedure without submitting an updated plan to the county health department are operating under an approval that does not describe what they are actually doing. An inspector who compares the approved HACCP plan to the actual production process and finds discrepancies is documenting a COMAR 10.15.03.34 violation, regardless of whether the current process is safe.

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Bottom Line

Maryland sushi operations holding rice at room temperature must have a HACCP plan approved by their county health department before service begins. There is no state-level central office for food service HACCP approvals: your county is the right contact, and requirements vary somewhat by county within the shared COMAR 10.15.03 framework. High priority classification, which applies to any operation conducting acidified sushi rice, means more frequent inspections, including dedicated HACCP compliance inspections. The pH critical limit is 4.2, tested and documented for every batch. Your HACCP plan must be updated whenever a CCP-affecting change occurs, and at minimum every five years, with the updated plan submitted to and approved by your county health department before implementation. Operations that maintain complete, contemporaneous pH logs and calibration records pass Maryland HACCP compliance inspections without disruption.

FAQ

  • Who approves a sushi rice HACCP plan in Maryland, the state or my county? Your county health department is the approving authority for HACCP plans and variances for food service facilities in Maryland. The Maryland Department of Health sets the regulatory framework under COMAR 10.15.03, but licensing, HACCP plan review, and inspection of food service facilities are administered at the county level. Contact your county’s health department food protection program directly to confirm their specific application requirements, documentation formats, and review timeline. County-specific guidance and templates are available from many Maryland county health departments.
  • What pH does Maryland require for sushi rice held at room temperature? The critical limit is pH 4.2 or below. At this pH, Bacillus cereus and Staphylococcus aureus, the primary pathogens of concern in cooked rice held outside of temperature control, are effectively inhibited. Every batch must be tested after vinegar mixing and before service, with the reading documented in your pH log. Batches testing above 4.2 require documented corrective action: add vinegar, retest, and document both readings. If the pH cannot be brought below 4.2, the batch must be discarded or placed under temperature control.
  • How often does Maryland inspect a sushi restaurant with an acidified rice process? A sushi operation conducting acidified sushi rice is classified as a high priority food service facility under COMAR 10.15.03.33C. High priority facilities receive more frequent inspections than moderate or low priority operations. In addition to routine comprehensive inspections, Maryland county health departments conduct dedicated HACCP compliance inspections of high priority facilities that focus specifically on whether the approved HACCP plan is being implemented correctly, whether records are complete, and whether corrective actions are documented. The specific inspection frequency is determined by your county health department.
  • What happens if I change my sushi rice vinegar or recipe in Maryland? Any change to your food processes or procedures that affects a critical control point requires a HACCP plan update submitted to and approved by your county health department before the change is implemented. This includes changing your vinegar brand, switching rice varieties, modifying your rice-to-vinegar ratio, or introducing a new seasoned sushi vinegar product. Under COMAR 10.15.03.34A(4)(a), HACCP plan changes must be approved by the county before implementation. Operating a modified recipe under your existing approved plan without notification is a regulatory violation.
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