Preparing for a Sanitary Survey

For many water system operators and managers, the phrase “sanitary survey” can trigger anxiety—even among experienced professionals. That reaction is understandable. Sanitary surveys are important regulatory milestones, and their findings can carry real operational and compliance implications. However, with the right mindset and preparation, a sanitary survey need not be intimidating. When approached correctly, it becomes one of the most valuable tools available for strengthening a water system and protecting public health. 

At its core, a sanitary survey is a structured review of how a public water system is designed, operated, maintained, and managed. Inspectors are not expecting perfection. Their objective is to confirm that public health protections are in place and to identify risks before they evolve into violations or emergencies. A system that demonstrates awareness, organization, and a clear understanding of its operations is positioned for a successful inspection. 

What Inspectors Are Evaluating 

Sanitary surveys follow a “multiple barrier” approach, examining how risks are controlled from the water source to the customer’s tap. Inspectors review the adequacy of the source, treatment processes, distribution system, finished water storage, pumps and controls, monitoring and reporting practices, management, and operator compliance. This comprehensive review helps identify weak points before they affect water quality. 

Inspection findings fall into three categories:  

1. Significant deficiencies that could lead to contamination or unacceptable health risks if left uncorrected; 
2. Minor deficiencies that require attention but pose a lower immediate risk; and  
3. Recommendations that highlight opportunities to improve operations or long-term planning. The presence of findings is not unusual. Identifying and documenting potential risks is the primary purpose of the survey.  

First Impressions Matter 

Inspectors begin forming impressions the moment they arrive. A well-maintained facility signals that operations are taken seriously. Consistent attention to fundamentals reassures staff and reduces anxiety during inspections. 

A simple readiness checklist includes safe facilities with hazards addressed and chemicals labeled; working equipment or clear documentation when equipment is out of service or bypassed; clean, orderly spaces that reflect daily discipline; and accessible equipment and records. These basics support a smoother inspection and safer operations year-round. 

Records Can Shape the Inspection 

The records review is just as critical as the physical walkthrough and is often where inspections slow down. Inspectors do not expect flawless records, but they do expect organization, completeness, and transparency. 

Systems should provide a quiet, well-lit space for review and organized records in clearly labeled binders or physical/electronic folders. Commonly requested records include operator logbooks, sampling results, permits, detail plans or as-builts, operator certifications, calibration records, treatment calculations, emergency response and contingency plans, valve exercising and asset management plans, and prior survey correspondence. 

If a record is not immediately available, it is best to acknowledge this and explain how and when it will be provided. Clear communication builds confidence and demonstrates professionalism. 

The Value of a Mock Survey 

One of the most effective and often overlooked preparation tools is a mock sanitary survey or pre-inspection walkthrough. A mock survey serves as a practice run and can be conducted internally or with assistance from a technical assistance provider. 

The goal is to walk through the system as an inspector would and ask practical questions: What would an inspector see first? Where might questions arise? Which records are difficult to locate? 

Mock surveys help systems identify issues early, locate gaps in documentation, practice explaining operations, reduce stress on inspection day, and ensure staff understand their roles. Many systems find that even a simple walkthrough significantly increases confidence and preparedness. 

Expect Findings 

Every sanitary survey identifies findings, which may include violations. Surveys are not pass-fail exams; they are assessments intended to guide improvement. Many findings reflect issues systems are already aware of; the survey documents them. 

Findings can be used as a prioritized action list, to justify budget or staffing requests, as documentation for funding applications, and as a roadmap for reducing long-term risk. The exit meeting, though informal, is a significant opportunity to ask questions, take notes, and clarify timelines. 

Inspection Day Mindset 

Preparation is physical and mental. Eat beforehand, hydrate, and wear proper PPE. Approach the inspection with a mindset of “Today is about showing how we operate, not about being perfect.” Inspectors notice calm, engaged, and professional staff. 

Turning Surveys into Tools 

Well-prepared systems do not simply endure sanitary surveys, they use them. Survey results can strengthen asset management, guide capital planning, improve documentation, and reduce repeat findings. When preparation becomes routine rather than reactive, sanitary surveys become less disruptive and more valuable. 

Bottom line: Preparing for a sanitary survey is not about the inspection itself. It is about operating a system that is safe, organized, and well understood every day. When that becomes the focus, inspections tend to take care of themselves.