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The city of San Marcos first began fluoridating its water systems in 1987.
Starting November 12, the city of San Marcos ceased its water fluoridation. The decision came after 60.73 percent of voters voted to approve Proposition 1.
The city's water treatment plant is managed by the Guadalupe-Blanco River Authority (GBRA).
The level of natural occurring fluoride in the water system is tested twice a day by GBRA.
When the city of San Marcos practiced fluoridation, the GBRA aimed for a fluoridation level of 0.6 or 0.7 parts per million (ppm).
The city of San Marcos cited tooth decay prevention as the reason for fluoridating its water systems. The fluoride additive previously used by the city to treat its water system is hydrofluorosilicic acid. Approved by the National Sanitation Foundation International and the American National Institute Standard 60 for use in public drinking supplies, hydrofluorosilicic acid is a water-based solution. It is the most used fluoride additive in fluoridated water systems in the U.S.
History of Fluoride
The United States has a long history with the fluoridation of state and county water systems. The city of San Marcos began fluoridating its water systems in 1987 based on the recommend...
An End to Fluoridation
SAN MARCOS – The city of San Marcos, Texas put an end to fluoridating its water system on November 3 after 60.73 percent of voters voted in favor of Proposition 1 at the polls.