How to Read Your Water Utility's Annual Consumer Confidence Report

If you’re on a public water system in the US, your utility is required by law to send or post an annual Consumer Confidence Report — a CCR — that tells you exactly what’s been detected in your tap water and at what levels. It’s the single most authoritative source on what’s actually coming out of your pipes, and far more local than national datasets like the one this site is built on.

The catch is that CCRs are written in a particular bureaucratic dialect. This guide walks through one section at a time so you can extract the parts that matter to you, particularly around PFAS.

How to find your CCR

A few options, in order of how reliable they tend to be:

1. Check your water bill. Most utilities print the CCR’s URL on the bill, or include it as an insert once a year (usually in late spring or early summer, since EPA requires reports for the previous calendar year by July 1).
2. Search “[your water utility name] consumer confidence report” or “[city name] water quality report.” Almost every utility now posts the PDF directly on their website.
3. The EPA CCR portal. Useful as a fallback, though it’s not always up to date for smaller systems.
4. Call your utility’s customer service line. They are required to provide the report on request.

If you’re on a private well, none of this applies — well owners don’t get CCRs. See our private well testing guide instead.

What’s in a CCR

The structure is roughly the same across utilities because the format is dictated by EPA. The sections you’ll care about are usually labeled, in order:

1. Where Your Water Comes From

A short paragraph identifying your utility’s source: surface water (a river, lake, or reservoir) or groundwater (aquifer wells), and which one specifically. This matters because PFAS can enter water from upstream industrial discharges (more common in surface water) or from groundwater plumes (more common around military airfields and certain manufacturing sites). Knowing your source narrows which contamination stories are actually relevant to you.

2. Source Water Assessment Summary

A list of “potential sources of contamination” the utility has flagged in the watershed. Things to look for if you’re focused on PFAS:

• Military bases or airports (firefighting foam was the dominant historical PFAS source)
• Fluorochemical or chrome plating facilities
• Major landfills
• Paper or textile mills

The CCR typically just lists categories of risk, not specific names. The state’s source water assessment program (SWAP) usually has more detail if you want to dig further.

3. Detected Contaminants Table

The biggest section. It’s typically a wide table with columns like:

Contaminant	Avg Level	Range	MCL	MCLG	Likely Source

Translating each:

• Avg Level (or “RAA” / “running annual average”) — the year’s average across sample points
• Range — the highest and lowest single sample
• MCL — Maximum Contaminant Level, the legal limit
• MCLG — MCL Goal, the level EPA considers ideally safe (often zero for carcinogens)
• Likely Source — typical contamination source category

The table separates “regulated contaminants” (have an MCL) from “secondary” or “unregulated” ones. Most PFAS data still appears under “Unregulated Contaminants” because the federal MCL has only existed since April 2024 and the compliance window extends to 2029 — so utilities are reporting results, but not yet under enforcement.

4. Violations / Health Advisories

If your utility had any MCL exceedances during the year, this section will say so. PFAS-specific violations will start appearing in the late 2020s as the MCL rule moves into enforcement. Right now, this section more often references nitrate, lead, or disinfection byproduct issues — important to read either way.

5. Definitions and Legal Disclaimers

Skim or skip. The same boilerplate appears in every CCR.

What to look for if PFAS is your concern

A focused checklist when you open the report:

1. Find the “PFAS” or “Per- and polyfluoroalkyl substances” entries. They may be under “Unregulated Contaminants Monitored” rather than the main detection table.
2. Check whether PFOA or PFOS are listed at all. Many small systems don’t yet have UCMR 5 results published in their CCR; if it’s missing, you can usually find raw data on the EPA UCMR 5 site instead.
3. Compare the average to the MCL (4 ppt for PFOA and PFOS). Anything above is something the utility will need to treat by 2029.
4. Note the range. If the average is 2 ppt but the range goes up to 12 ppt, individual samples are showing more PFAS than the average suggests — usually a sign of seasonal variation worth tracking over time.
5. Look for a “Treatment Plans” or “Capital Improvements” section. Many utilities now describe their PFAS treatment timeline directly in the CCR. If your utility has a clear plan and dates, that’s reassuring even if current readings are above the MCL.

A few things CCRs don’t cover (and how to handle them)

• Distribution-system contamination like lead-pipe leaching usually shows up as elevated lead at customer taps, not in the source-water testing the CCR summarizes. If you live in an older home, a separate at-the-tap test for lead is reasonable.
• Short-chain PFAS (PFBA, PFHxA, etc.) may not be reported because they’re not regulated. UCMR 5 raw data covers more compounds than your CCR summarizes.
• Single-event spikes that didn’t trigger an MCL violation might be hidden in the annual average. The “range” column is your best clue here.
• Other household plumbing. A water softener, on-fridge filter, or building-level holding tank can change what reaches your glass. The CCR describes water leaving the utility, not water at your sink.

What to do after reading

If everything’s well below MCLs, you’re done. Note the date and check again next year.

If something is at or above an MCL, you have a few reasonable next steps:

• Email the utility’s water quality contact. They’re listed on the CCR and are usually surprisingly responsive. Ask what their treatment plan and timeline are.
• Filter at the tap in the meantime if you want belt-and-suspenders coverage. NSF/ANSI 53 or 58 certified filters specifically for PFOA/PFOS reduction will get you well below the MCL regardless of what the utility is doing upstream.
• Attend a board meeting. Most utility decisions happen in public board or council meetings. The cadence is monthly in most places, agendas are posted online, and PFAS treatment is a current agenda item at many systems.

The bottom line

Your CCR is a free, official, locally specific document that answers most of the questions national datasets can only approximate. Reading one takes about ten minutes, and once you’ve read it once, the next year’s version reads in two. It’s the best single thing most people can do to understand their water — and a good complement to the ZIP code data on this site.

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Sources: EPA Consumer Confidence Reports, EPA Source Water Protection, and the EPA UCMR 5 program.