How to Read Your Water System's EPA SDWIS Record (and What Each Violation Actually Means)

Every public water system has a file, and the people who matter read it before they ever talk to you. That file is your EPA record, held in the Safe Drinking Water Information System (SDWIS) and shown to the public through EPA's Enforcement and Compliance History Online (ECHO) portal. It is what a state inspector reviews before a sanitary survey, what a board or a buyer pulls before a decision, and what a customer finds when they look you up. If you are not sure what is on yours, check your water system free at orevant.com before you read on.

The five kinds of entries you will actually see

SDWIS does not list problems in one bucket. It records them by type, and each type triggers a different response.

• Health-based (MCL) violations. A contaminant exceeded its maximum contaminant level. Nitrate over 10 mg/L (40 CFR § 141.62), total trihalomethanes over 0.080 mg/L or haloacetic acids over 0.060 mg/L (40 CFR § 141.64), and a confirmed E. coli positive are all here. See what a nitrate violation obligates you to do and what a coliform or E. coli positive requires.
• Monitoring and reporting violations. You missed a sample, filed it late, or did not file at all. This is the single most common violation on the books, and it counts even when your water was perfectly fine. See the total coliform sampling schedule.
• Treatment technique violations. You are required to do something, filter, disinfect, or hold a residual, and the record shows you did not. A turbidity exceedance, a disinfectant residual that dropped below the floor, or a lead and copper action level exceedance all land here. See the turbidity limits.
• Public notice violations. You had a violation and did not notify customers on the required clock. The tiers and deadlines are in 40 CFR § 141.202 and 141.203. See the Tier 1, 2, and 3 public notice deadlines.
• Significant deficiencies. A sanitary survey finding your state required you to correct on a clock. It does not expire; it carries into your next survey as a repeat finding. See what happens when a system fails a sanitary survey.

How to read a single entry

Each violation on your record carries a few fields worth knowing:

• The rule and contaminant. What standard applies, for example the Revised Total Coliform Rule, and what was measured.
• The compliance period. The month or quarter the violation covers. A violation from three years ago stays on the record until the state marks it resolved.
• The status. This is the one that matters. Open means it is unresolved right now. Returned to compliance means the condition was corrected but the administrative closeout may still be pending. Resolved means it is closed. An open health-based violation is live enforcement exposure; a resolved monitoring violation from years ago is history that still shows up in ECHO.

What the record does not show

The federal SDWIS record is not the whole picture. Federal data can trail your state's files by a quarter or more, so a violation your state just issued may not appear yet, and a violation your state resolved may still show as open. State primacy agencies also keep their own enforcement history that ECHO does not always surface. That is why Orevant labels findings it cannot confirm as Unable to Verify rather than dressing them up as violations. See how to know if your water system is compliant.

Why a monitoring violation matters even when the water is clean

The instinct is to shrug off a missed coliform sample because nothing was wrong. Resist it. A monitoring violation is a real record with real consequences: it raises your inspection priority, it counts against you when your state ranks systems for DWSRF funding, and it is the first thing a new operator, a buyer, or a journalist sees. A system with a clean health record and a stack of missed-sample violations looks less responsible than it is, and fixing the paperwork is cheaper than defending the reputation.

Read the file before someone else does

You can pull your own EPA profile in about a minute through the free lookup at orevant.com. It shows what the federal record currently reflects: open violations, monitoring gaps, and deficiency history. The $199 compliance scan goes further: it maps every open item against your state's corrective action and federal timelines, so you know what to fix first and what a compliant response looks like.

Run the $199 Compliance Scan — see every open violation and the exact step to close each one.

Prefer to see the public record first? Check your water system free at orevant.com.

FAQ

Is my SDWIS record public?

Yes. Your system's compliance history is public through EPA ECHO, and a customer, a board, or a competitor can pull it without asking you.

How do I find my system's record?

You need your PWSID, the identifier EPA and your state use. It is printed on state correspondence and on your monitoring forms. See how to find your PWSID.

Does a returned to compliance violation still hurt me?

It is no longer an open enforcement item, but it remains visible history in ECHO and can inform your state's inspection priority. Resolve it properly and keep the closeout documentation.

Our water is fine but we have several monitoring violations. Should we worry?

Yes, for the record, not the water. Monitoring violations raise inspection priority and weigh on funding and trust, even when no health-based violation exists. The cheapest fix is to get the sampling calendar right. See the total coliform sampling schedule.