Total Coliform Bacteria

The City of Yuma monitors for Total Coliform bacteria on a minimum of 100 samples per month throughout the City's water distribution area. A maximum of 5% of these samples may be positive for Total Coliform each month. (NOTE: If the sample is negative for Total Coliform, it is negative for E. coli). The City of Yuma's drinking water system is operated and monitored in accordance with the SDWA. 

For produce and agricultural entities: if your customers or regulatory agencies require your facility to demonstrate potability for contractual reasons, such as for the Leafy Green Products Handler Marketing Agreement (LGMA), responsibility for related sampling and analysis in excess of that performed by the City of Yuma lies with your staff and facility.

• Total Coliform & E. coli Summary for COY Potable Water

Annual Inorganic Chemical Analysis Report

The samples for the inorganic analyses are collected in January. The data is received by mid-March.

Water Quality Information

Regulation of the City of Yuma's potable or drinking water, Public Water System number 14024, falls under the Safe Drinking Water Act (SDWA) with oversight by the United States Environmental Protection Agency (USEPA) and the Arizona Department of Environmental Quality (ADEQ).

Water Quality Report

The Consumer Confidence Report (CCR) or Water Quality Report is mandated by USEPA to be published and available to the public by July 1st each year. The data reported is for the previous calendar year. For example, the CCR published for July 1, 2012 contains data for January through December 2011.