Most public water suppliers are required to provide CCRs annually to their customers. People who do not pay their own water bills, such as those who live in apartments or condos or rent houses, may need to contact a building manager for more information or check online to see if their CCR has been posted.
People who get their water from a private ground water well do not receive CCRs. Unlike public water systems, private wells are not regulated by EPA so there is no requirement for a CCR. To learn more about safe water, maintaining private wells, and well testing, please visit CDC’s Private Ground Water Wells page.
All CCRs must contain certain content elements. The specific information in your CCR is tailored to your local water system and will include:
Your water source, such as a lake, river, or public well
Knowing your water source is important because germs, chemicals, and minerals—known as "contaminants"—may exist at varying levels, depending on the source.
Levels of contaminants in your water source
Keep in mind that while some things listed as "contaminants" in your CCR can be harmful to your health, others can be good for you, such as the appropriate amount of a disinfectant that keeps your water safe from germs. For example, if your local water system adds chlorine or chloramine to protect you from germs in the water, it will be listed as a contaminant, even though these chemicals are added to kill germs and protect your health. Knowing what levels of contaminants are in your water source—and whether those contaminants are actually harmful—can help you to determine whether or not you should take additional precautions in protecting yourself and your family from potential water-related illnesses.
EPA standards for safe contaminant levels
The EPA determines what levels of contaminants are safe to have in your water, and your CCR will show you whether or not your water source has a higher level of contaminants than recommended. It is most important to pay attention to whether contaminant levels are marked as "violated," meaning the level is higher than EPA allows. This will be the best indication of how the contaminants in your water source might affect your health.
Information about Cryptosporidium
All CCRs are required to provide general information on Cryptosporidium, a parasite that can cause a severe diarrheal illness, because it can be dangerous for persons with severely weakened immune systems, even at low levels. It is also very tolerant of chlorine disinfection. This section exists on every CCR and does not necessarily indicate the presence of Cryptosporidium in your drinking water.
Other relevant information about your water
CCRs often include additional information tailored to your water source that will help to provide a better understanding of where your water comes from and how safe it is.
View an interactive sample CCR, which provides detailed information on how to read and interpret your CCR.