The water supplied by the Blue Diamond Water System comes from two wells that are recharged from precipitation and snowmelt runoff in the Wilson Cliff/Red Rock Canyon and Mount Potosi areas. Water from the two wells is blended before entry into the distribution system. Potential contaminants are few because the watershed is within the Red Rock Canyon National Conservation Area.

The federal Safe Drinking Water Act was amended in 1996 and requires states to develop and implement source water assessment programs to analyze existing and potential threats to the quality of public drinking water throughout the state. A summary of the Blue Diamond Water System's susceptibility to potential sources of contamination was initially provided by the state of Nevada in 2005, and an updated summary was published in the 2017 water quality report for the Blue Diamond Water System. The updated summary assessment may be accessed online.

Call 702-258-3930 if you have questions. Learn more about the Nevada Source Water Assessment Program at ndep.nv.gov/water/source-water-protection.

Because Blue Diamond's water supply is protected within the principal groundwater aquifer, it does not require the level of treatment associated with surface water sources. However, water quality is closely monitored. Once pumped from the principal aquifer, the water is disinfected using sodium hypochlorite.

Every month, water samples from Blue Diamond's water system are collected and analyzed. The Water District monitors in accordance with all Safe Drinking Water Act requirements.

Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

Disinfection by-product: A substance created by the chemicals or processes used to destroy potentially harmful microorganisms.

Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contamination.

N/A: Not applicable.

N/D: Not detected. Does not equate to zero, but refers to an amount below analytical reporting limits.

Part per billion (ppb): A unit used to describe the levels of detected contaminants. Equivalent to 1 cent in $10 million.

Part per million (ppm): A unit used to describe the levels of detected contaminants. Equivalent to 1 cent in $10,000.

Picocuries per liter (pCi/L): A measure of the radioactivity in water. Low levels of radiation occur naturally in many water systems, including the Colorado River.

Running annual average: The average of sample results for 12 consecutive months or four consecutive quarters, based on the monitoring requirements.

Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water.

These results represent levels in the treated water, based on 2023 data, except where noted.

The Las Vegas Valley Water District tests for more than 100 regulated and unregulated substances. As required by the Safe Drinking Water Act, the test results above for Blue Diamond list those regulated contaminants with primary standards that were detected. A complete analysis report is available through the Water District.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contami-nants. The presence of contaminants does not necessarily indicate that water poses a health risk. For more information about contaminants and potential health effects, call the EPA Safe Drinking Water Hotline at 800-426-4791.

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, other contaminants, and can pick up substances resulting from the presence of animals or from human activity.

Contaminants that may be present in source (untreated) water include:

• Microbial contaminants such as viruses and bacteria that may come from septic systems and wildlife;
• Inorganic contaminants such as salts and metals that can be naturally occurring or result from urban runoff, septic systems, industrial wastewater discharges and mining;
• Pesticides and herbicides that may come from a variety of sources such as urban runoff and residential uses;
• Organic chemical contaminants including synthetic or volatile organic chemicals that are by-products of industrial processes and can come from gas stations, urban runoff and septic systems;
• Radioactive contaminants that can be naturally occurring or the result of mining activities.

To ensure tap water is safe to drink, the EPA prescribes regula-tions that limit the amount of certain contaminants in water provided by public water systems. Food and Drug Administration regulations establish limits for contaminants in bottled water, which must provide similar protection for public health.

The Las Vegas Valley Water District, which operates the Blue Diamond Water System, actively monitors for lead and copper in accordance with state and EPA Lead and Copper Rule require-ments. The following information is provided to help you assess risks in your tap water.

If present at elevated levels, lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and compo-nents associated with service lines and home plumbing. The Water District is responsible for providing high-quality drinking water up to your meter but cannot control the variety of materials used in home plumbing components. Some Nevada homes built before 1990 are more likely to have lead-based plumbing components.

When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to two minutes before using water for drinking or cooking. If you are concerned about lead in your drinking water, you may wish to have your water tested by a private laboratory. For more information, call the EPA Safe Drinking Water Hotline, 800-426-4791, or visit epa.gov.

The U.S. EPA is poised to take actions to improve the Lead and Copper Rule that are intended to better protect families and communities in years to come, particularly those that have been disproportionately impacted by lead in drinking water. The federal requirements take effect starting in 2024, and the Water District is proactively developing and implementing measures to comply with this rule, such as preparing a customer-side service line inventory and increasing test sites and testing frequency. Learn more at epa.gov and depend on your Water Quality Report to keep you informed.

Some people may be more vulnerable to contaminants in drinking water than the general population. Those with compromised immune systems such as those with cancer undergoing chemotherapy, persons who have had organ transplants, those with HIV/AIDS or other immune-system disorders, some elderly and infants can be particularly at risk from infections. These people should seek advice from their health-care providers about drinking water. EPA/Centers for Disease Control and Prevention guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at 800-426-4791.

For water-quality information, call 702-258-3215. Submit questions via the Contact Us form or by mail: Las Vegas Valley Water District, Water Quality Division, 1001 S. Valley View Blvd., Las Vegas, NV 89153. For the EPA Safe Drinking Water Hotline, call 800-426-4791; for the Nevada Division of Environmental Protection's Bureau of Safe Drinking Water, call 775-687-9521 or visit ndep.nv.gov/water.

Visit the Blue Diamond system pages for information on scheduled meetings of the Blue Diamond Water System Board of Directors. Meetings are open to the public.

The Blue Diamond Water System falls within the jurisdiction of the Las Vegas Valley Water District (LVVWD). The LVVWD Board of Directors, which is responsible for governing the Blue Diamond Water System's activities, is composed of the Clark County Commissioners.

Marilyn Kirkpatrick, President

James Gibson, Vice President

Justin Jones, William McCurdy II, Ross Miller, Michael Naft, Tick Segerblom

John J. Entsminger, General Manager

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