How to Read Your Sanitary Survey Letter

The sanitary survey visit is over. What you hold now is the letter, and the letter is the clock. It names what the inspector saw, what they called it, and when they expect a reply.

This page is how an operator reads that letter. It is not the enforcement sequence after a failed survey, and it is not the systemic-issues checklist. Confirm every due date with your state primacy agency. This isn't legal advice.

Start with the header, not the punch list

Before you argue a finding, confirm the letter is yours. The header should carry the system name, the PWSID, the survey date, the inspector, and the date the letter was issued. If the PWSID is wrong, call the primacy agency before you write a response. A beautiful reply on the wrong identifier doesn't close anything. If you need the number, use PWSID lookup.

Write the letter date on a calendar. Clocks usually run from written notice, not from the day the inspector left. Mail that sat in a clerk's inbox is still your clock.

Significant deficiency vs minor deficiency

States label items differently. You will see significant deficiency, minor deficiency, standard deficiency, sanitary defect, observation, and recommendation. Don't collapse them. The letter's own words control what you owe.

A significant deficiency is a defect in design, operation, or maintenance, or a failure of source, treatment, storage, or distribution, that the state determines is causing, or has the potential for causing, contamination in water delivered to consumers. That is the federal language in 40 CFR 141.403 (Ground Water Rule) and 40 CFR 141.723. A cracked well seal, an uncovered finished-water tank, or an unprotected cross-connection can land here.

A minor or standard deficiency still requires correction. It is not the same public-health finding. Read the due date on that line. If a minor item has no date, ask in writing. Don't assume it can wait until the next survey.

Finding vs recommendation

A finding (deficiency, significant or not) is something the state says you must fix or answer. A recommendation is advice. It is not a deficiency today. It can become one at the next survey if you ignore it, especially if the same condition has already been written up once.

• Don't treat a finding as a suggestion you can take under advisement.
• Don't treat a recommendation as noise. Log it, assign it, and keep the note for the next visit.
• If the letter uses both words on one page, respond to each class in its own paragraph so the state can see you read the difference.

The pre-visit records list is a different page: How to prepare for a state drinking water inspection.

The dates that actually matter

States often use about 120 days for significant deficiencies. Confirm yours. Some letters use 30, 45, or 90. Some use two clocks on the same item.

For groundwater systems, 40 CFR 141.403 is the federal baseline. Unless the state already directed a specific fix, you consult with the state on the appropriate corrective action within 30 days of written notice. Within 120 days of that notice, or earlier if the state directs, you must either have completed the corrective action or be in compliance with a state-approved corrective action plan and schedule.

For sanitary surveys EPA itself performs, 40 CFR 141.723 requires a written response no later than 45 days after you receive the report, saying how and on what schedule you will address each significant deficiency. Wyoming systems, and any other system where EPA is the primacy agency, should read that 45-day clock first.

Your state's letter can be stricter than the federal floor. The date on the letter wins. Calendar:

• Date of written notice (the letter, not the site visit).
• Consult or written-response date, if the letter or the rule sets one.
• Completion date, or the date a plan must be approved.
• Any interim measure the letter names (cover the tank this week, even if the replacement is next year).

What to send back

Send a written response that tracks the letter, item by item. Use the state's numbers. Don't write a narrative that merges three findings into one paragraph about "the well."

• Each significant deficiency, restated in one sentence, then the fix, the date it was done, or the date you will do it.
• Evidence: dated photos, invoices, work orders, lab results, as-built notes, a revised operations page.
• The PWSID on every page and in the email subject.
• The name and role of the person who signed. The state needs to know it was the owner or an authorized operator, not an unsigned attachment.
• A request that the state confirm, in writing, that the item is closed or that the plan is approved.

If the work can't be finished inside the letter's date, say so before the date and ask for a state-approved schedule. A plan the state never approved is not a plan under 141.403. Keep the packet through the next survey. See water system record retention.

How an ignored item becomes a formal violation

An unanswered significant deficiency does not stay a finding forever. Under the Ground Water Rule, if you neither complete the corrective action nor sit inside a state-approved plan and schedule within 120 days (or the earlier date the state set), you have a treatment-technique violation. That is a formal finding on the public record, even if the next coliform sample is absent.

Uncorrected significant deficiencies also show up in customer-facing paper. Groundwater systems may owe special notice. Community systems often carry the item in the next Consumer Confidence Report. See SDWA public notice tiers.

The federal SDWIS file can trail the state file by a quarter. Don't wait for a lookup to show the violation. See How to read your SDWIS violation record. The enforcement sequence after a failed survey is a different page: What happens when a water system fails an EPA sanitary survey.

The day the letter arrives

• Confirm the PWSID and the letter date.
• Split the list into significant, minor, and recommendation.
• Put every printed due date on a calendar. Ask about any item that has none.
• If you are a groundwater system and the letter is silent on consult, still plan the 30-day call unless the state already directed the fix.
• Draft the item-by-item reply. Attach evidence or a schedule you can keep.
• Send it, keep the sent copy, and file the state's confirmation when it comes.

FAQ

Is a recommendation something I can ignore?

It is not a deficiency today, so it usually has no 120-day treatment-technique clock. It can still become a deficiency at the next survey if the same condition is still there. Log it and decide what you will do before the inspector returns.

Does every state use 120 days for a significant deficiency?

No. Many states use about 120 days because that is the Ground Water Rule baseline for finishing the work or sitting inside an approved plan. Your letter can be shorter. EPA-conducted surveys use a 45-day written response. Confirm the date with the primacy agency.

What if I finish the work but never write back?

The state can't close what it never sees. A tank hatch you replaced in week three is still open on their desk until you send evidence and they confirm. The violation risk is the missing closeout, not the missing hatch.

Is an ignored significant deficiency the same as an MCL violation?

No. Under the Ground Water Rule it is a treatment-technique violation if you miss the corrective-action clock. It still lands on the public record. It still needs notice when the rule says so. It is not a finding that a maximum contaminant level was exceeded. See MCL vs treatment technique vs action level.

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Orevant provides compliance information tools. This page isn't legal advice. Confirm the letter, the due dates, and the closeout the state will accept with your primacy agency.