Skip Navigation
Las Vegas Valley Water District

Jean Source Water Assessment

The Safe Drinking Water Act (SDWA) was amended in 1996 to require states to develop and implement source water assessment programs for existing and potential threats to the quality of public drinking water, and to include a summary of that assessment in the water system’s annual consumer confidence report. Specifically, states are required to delineate the sources of public drinking water, identify potential contamination sources within the delineated area, assess the water system’s susceptibility to contamination and inform the public of the results. These results are summarized below:

The Jean Water System service area is supplied by three wells in the Ivanpah Valley. The groundwater comes from the Ivanpah Valley aquifer, which is recharged from the southern end of the Spring Mountains and the New York Mountains. Potential groundwater contaminants include landfills and mine leachates in the recharge area.

The wells supplying water to the Jean service area were assessed for potential vulnerability to volatile organic (VOC), synthetic organic (SOC), inorganic (IOC), radiological and microbiological contaminants. The wells are considered to be moderately to highly vulnerable to IOC contamination based upon previous detections of nitrate. They may potentially be vulnerable to radionuclides. IOCs are typically associated with natural deposits, fertilizers, septic systems and asbestos components in the distribution system; radionuclides are typically associated with erosion of natural deposits and industrial activities

Although one well may not comply with the revised arsenic maximum contaminant level of 10 parts per billion that became effective in January 2006, water from the three wells is blended in the distribution system and meets or surpasses all state and federal drinking-water standards.

Detailed information pertaining to the findings of the source water assessment is available for viewing in person weekdays, by appointment, at the Las Vegas Valley Water District, 1001 S. Valley View Blvd. Please call (702) 258-3215 for an appointment. Additional information about the Nevada Source Water Assessment Program may be found at


Sign up to receive updates about conservation initiatives and water issues.

Subscribe »