IMPORTANT INFORMATION ABOUT YOUR DRINKING WATER

Grand Canyon National Park – Failure to Meet Treatment Requirements

Our water system recently violated a drinking water requirement. Although this incident was not an emergency, as our customers, you have a right to know what happened and what we did to correct this situation.

We are required to chlorinate our drinking water source located at the Roaring Springs cave. On the morning of May 8, 2023, we did not meet one or our treatment requirements to provide sufficient levels of disinfectant due to high levels of turbidity in the drinking water system. Although chlorine residual levels are above the minimum requirement at Phantom Ranch along the Trans-Canyon Pipeline, the levels on the South Rim are below that requirement.

What should I do?

There is nothing you need to do. You do not need to boil your water or take other corrective actions. However, if you have specific health concerns, consult your doctor.
If you have a severely compromised immune system, have an infant, are pregnant, or are elderly, you may be at increased risk and should seek advice from your health care providers about drinking this water. General guidelines on ways to lessen the risk of infection by microbes are available from EPA’s Safe Drinking Water Hotline at 1-800-426-4791.
What does this mean?

This is not an emergency.

*Inadequately treated water may contain disease-causing organisms. These organisms include bacteria, viruses, and parasites which can cause symptoms such as nausea, cramps, diarrhea, and associated headaches.*

These symptoms, however, are not caused only by organisms in drinking water, but also by other factors. If you experience any of these symptoms and they persist, you may want to seek medical advice.

While we have not detected any evidence of contamination in, or other health threats to, our source water, we are still committed to maintaining the required level of treatment to the water to eliminate the threat of contamination.

What is being done?

The Water Utility is in the process of injecting chlorine into the system to raise the chlorine residual level throughout the system, but specifically on the South Rim.

For more information, please contact Deirdre Hanners at 928-638-7907.

*Please share this information with all the other people who drink this water, especially those who may not have received this notice directly. You can do this by posting this notice in a public place or distributing copies by hand or mail.*

This notice is being sent to you by Grand Canyon National Park – Roaring Springs water system. State Water System ID#: AZ0403-702