In 1999, the Nevada Legislature passed Assembly Bill 284, requiring the Southern Nevada Water Authority (SNWA) to add fluoride to Southern Nevada's municipal water supply beginning in March 2000.
A second bill passed by the Nevada Legislature required that the issue of fluoridation be placed on the November 2000 election ballot to determine whether voters wanted municipal fluoridation to continue. In November 2000, Clark County residents voted to continue fluoridation of their municipal water supply.
Low levels of fluoride, about 0.3 milligrams per liter (mg/L), occur naturally in Southern Nevada's water supply. Per regulations developed by the Nevada State Health Division and administered by the Nevada Division of Environmental Protection, SNWA adds 0.4 mg/L of fluoride (hydrofluorosilicic acid, or HFS) to bring the level to approximately 0.7 mg/L in the municipal water supply.
These levels are considerably lower than the federal Safe Drinking Water Act limit of 4.0 mg/L and the Nevada secondary standard of 2.0 mg/L.
Based upon average monthly water usage of Southern Nevada water customers, municipal water users pay an average of a little over $1 per household to cover annual fluoridation costs.
Note: To determine which home filtration systems reduce fluoride, customers should contact the company they purchased the product from or call NSF International at (800) 673-6275. NSF is an independent, not-for-profit organization that certifies the performance of home water-treatment systems and devices.
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