How to Find and Read Your Water Utility Report

Every public water system has a PWSID, a two-letter state code followed by seven digits (for example, a Texas system looks like TX1010013). It appears on most water bills, on the front page of every CCR, and in state drinking water databases. If you do not have a bill, use the EPA Safe Drinking Water Information System (SDWIS) search: enter your state and county or city, and it returns every active system in that area with its PWSID, the population served, the water source (surface or groundwater), and a link to its compliance history. Large cities usually have one obvious system; suburbs and rural areas often have several small ones, so match the system name to the name on your bill or to your town. Once you have the PWSID, you can find the report even when the utility's website is a maze.

Under the Safe Drinking Water Act, every community water system must deliver a CCR to its customers by July 1 covering the previous calendar year (EPA: Consumer Confidence Reports). Systems serving more than 100,000 people must also post it online, and most smaller systems do too. Start with a web search for your utility's name plus water quality report; the current-year PDF is usually one or two clicks from the utility's home page, often under Customers or Water Quality. If you cannot find it, the EPA CCR page above links to a search tool that lets you look up a system by state and name and points to the report where the utility has submitted a URL. Failing that, your state drinking water program (usually inside the health or environmental department) keeps copies, and any utility will mail one on request; the Safe Drinking Water Hotline at 800-426-4791 can point you to the right state contact. EPA's 2024 CCR rule revisions will require systems serving 10,000 or more people to deliver reports twice a year and to make them easier to read, with the changes phasing in from 2027.

A faster route for most readers: this site has already compiled utility data for thousands of systems. Browse our state pages and drill down to your city, where you will see detected contaminants against EPA limits, violation history, and a grade, with links to the underlying data. Use it as the summary and the CCR as the primary source.

The heart of every CCR is a table of regulated contaminants that were detected. Understanding its columns is the whole skill.

Two habits make the table useful. First, check the units on every row: lead and arsenic are in parts per billion, nitrate and copper in parts per million, and PFAS in parts per trillion, so a number that looks small may not be. Second, notice what the table does not include. Utilities only have to report regulated contaminants that were detected; unregulated contaminants (many PFAS compounds until recently, chromium-6 outside California, microplastics) may appear in a separate section or not at all. Our contaminant pages explain each substance, its health effects, and the filter that removes it.

The CCR gives you a system-wide 90th percentile for lead, which says nothing about the pipe feeding your house. Under the EPA's Lead and Copper Rule Revisions, every system had to publish an inventory of its service lines by October 16, 2024, classifying each as lead, galvanized requiring replacement, non-lead, or unknown; systems with lead or unknown lines must also make the inventory publicly accessible and notify affected customers annually. We have compiled these inventories on our lead service line pages, and many utilities offer an address lookup map. If your line is lead, galvanized, or unknown, treat your tap as potentially elevated regardless of the CCR number: flush before use, use cold water for drinking and cooking, and see our lead filter guide for certified options. The 2024 Lead and Copper Rule Improvements require most lead lines to be replaced within ten years, so ask your utility where your address sits in its schedule.