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Water Quality 

Drinking Water Quality conducts comprehensive monitoring programs for compliance with the State of Colorado and the United States Environmental Protection Agency's rules and regulations. The division implements the City's Drinking Water and Cross Connection Control programs.

The City of Arvada goes to great lengths to make sure our drinking water is of high quality and meets all federal and state water quality standards. Each year the City takes 70,000 tests to demonstrate compliance with regulations, and for additional assurance of the quality of the water. Additionally, we have continuous automatic monitoring at both treatment plants and in the distribution system, which annually provides over 300,000 results to assist with the treatment process.

The City of Arvada provides all customers with an annual Water Quality Report. The purpose of the report is to share information and inform our customers about the high quality of their drinking water. We want you to know where your water comes from, what it contains and how it compares to stringent federal water quality standards. The City of Arvada's drinking water has met or exceeded the standards regulated by the State of Colorado and the U.S. Environmental Protection Agency.

Cross Connection Control Program

A cross connection is any point in a water distribution system where contaminants may come into contact with potable water. During a backflow event, these contaminants can be drawn or pushed back into the potable water system. A backflow prevention device/assembly installed at points where a cross-connection is likely, prevents contaminated water from entering the potable water distribution systems.

The Colorado Primary Drinking Water Regulations provide the authority for local cross-connection control programs. These regulations mandate public water suppliers to require installation of containment assemblies on all service connections that pose a potential health hazard to the public drinking water system.

State and local plumbing codes regulate backflow prevention requirements within buildings. In Colorado, state and local plumbing codes are based on national standards, such as the Uniform Plumbing Code and the International Plumbing Code.

The regulations and codes require all backflow prevention assemblies to be inspected and tested annually. This is to ensure that they are functioning properly.

The City of Arvada's Cross Connection Control Program Ordinance is currently being revised. Please call 720-898-7793 for more information regarding this Ordinance.


City of Arvada Water Quality Administrator Evelyn Rhodes: 720-898-7802

To report a water break or sewer backup after hours or on the weekend: 720-898-7820.

To report a water problem electronically, 24/7, use Ask Arvada.

For more information on Utilities Department services, please visit: