Water Quality

As a service to CAP customers, a robust monitoring program is in place to provide water users with valuable information regarding source and canal water quality. The monitoring program consists of both real-time measurements and monthly/quarterly grab samples. Information on this web page is available for both CAP water users and the public to view and download. Our Annual Water Quality Report summarizes results from CAP’s monitoring program.

Hoover Dam

Lower Colorado River Water Quality Partnership

Central Arizona Project works closely with the Metropolitan Water District of Southern California and Southern Nevada Water Authority to address a range of initiatives and programs related to water quality in the lower Colorado River. These programs include environmental protection, Lake Mead conservation, and safeguarding the quality of water that we deliver to our customers. For more information about the Partnership, click on the link below.

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Water Users:

Sign up for email distribution list

To sign up for CAP’s water quality notifications, please email your name and organization to info@cap-az.com. Notifications sent to this list pertain to water quality items such as algal blooms, cymbella, turbidity, and Alamo Dam releases.

CAP Water Quality Testing

Water Quality Guidance

CAWCD and the United States Bureau of Reclamation are pleased to announce the release of the draft document “Water Quality Guidance for the Introduction of Non-Project Water Into the Central Arizona Project.” This guidance document includes extensive numeric standards as well as implementation details for parties proposing to use the CAP system to transport non-Colorado River water supplies.

CAP AquaPortal

CAP has created a portal for maps and data related to water quality for water users.

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This link is taking you away from the CAP website and provides information on an external site that is consistent with the intended purpose of the CAP website. CAP cannot attest to the accuracy of the information provided by this link or any other linked site. CAP is not responsible for the information or links provided by sponsors of the site or any products presented on the site. These links do not represent an endorsement by CAP or its directors or employees of site sponsors or products.

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This link is taking you away from the CAP website and provides information on an external site that is consistent with the intended purpose of the CAP website. CAP cannot attest to the accuracy of the information provided by this link or any other linked site. CAP is not responsible for the information or links provided by sponsors of the site or any products presented on the site. These links do not represent an endorsement by CAP or its directors or employees of site sponsors or products.

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This link is taking you away from the CAP website and provides information on an external site that is consistent with the intended purpose of the CAP website. CAP cannot attest to the accuracy of the information provided by this link or any other linked site. CAP is not responsible for the information or links provided by sponsors of the site or any products presented on the site. These links do not represent an endorsement by CAP or its directors or employees of site sponsors or products.

Alert Icon

This link is taking you away from the CAP website and provides information on an external site that is consistent with the intended purpose of the CAP website. CAP cannot attest to the accuracy of the information provided by this link or any other linked site. CAP is not responsible for the information or links provided by sponsors of the site or any products presented on the site. These links do not represent an endorsement by CAP or its directors or employees of site sponsors or products.