Arsenic occurs at levels of concern in drinking water in areas of the plains, mountains and desert states. In many cases, ground water is the sole source of drinking water for rural Nevada. The Environmental Protection Agency (EPA) has research, education, information and resources critical for making informed decisions concerning arsenic in drinking water. For more information please visit the EPA’s website at: www.epa.gov.
Arsenic Facts:
• Arsenic enters water supplies from natural deposits in the earth’s crust and/or human activities.
• Organic arsenic compounds are less toxic than inorganic arsenic compounds.
• Long-term exposure in drinking water, in excess of 10 μg/L, causes increased risk of skin, lung, bladder, and kidney cancer, as well as skin related problems such as
hyperkeratosis, and pigment mutations.
• Excess arsenic consumption promotes cardiovascular and nervous system malfunctions, eventually resulting in death.
• Sensitivity to arsenic's toxic effects, including carcinogenic effects, varies with each individual and factors such as nutrition and genetic predisposition influence these effects.
• Although costly, some existing removal technologies include Ion Exchange, Coagulation Filtration (Fallon), Activated Alumina, and Lime Softening/Soda Ash – the removal process to be used in Fernley is Coagulation Microfiltration.
New Regulations
On January 23, 2006 a new arsenic drinking water MCL of10 ug/L, became the standard for water systems throughout the United States. The lowering of the previous 50 ug/L MCL, by the Environmental Protection Agency (EPA), was in response to a study conducted by the National Research Council (NRC) in 1999. This study suggested the previous limit was not sufficient in minimizing potential health risks.
Regulatory Implications
Facing violations and fines from the EPA, municipalities and public water suppliers are working to upgrade their existing facilities with new technologies, new treatments, and/or alternative methods. The City of Fernley has been granted an extension to meet the EPA deadline by the State of Nevada, the new deadline date is 7/23/2009.
The goal of the City of Fernley is to protect and improve the quality of our water resources and water system by facilitating development, delivery, and implementation of new and existing practices to our water customers.
The City continues its efforts on all fronts to strengthen its ability to provide water at the highest quality practicable to its customers. The City thanks all residents in advance for their patience during the construction period of our water treatment facility.