Abstract
A study was undertaken to examine the content and spatial distribution of fluoride in drinking water. Water samples (735) from public water systems covering all Estonian territory were analysed using SPADNS method. In order to specify the natural source of fluoride, the chemistry data from five aquifer systems utilised for water supply were included into the study. Fluoride concentrations in tap water, to a great extent, ranged from 0.01 to 6.95 mg/l. Drinking water in southern Estonia, where terrigenous Middle-Devonian aquifer system is exploited, has a fluoride concentration lower than recommended level (0.5 mg/l), thus promoting susceptibility to dental caries. The western part of the country is supplied by water with excess fluoride content (1.5–6.9 mg/l). Groundwater abstracted for drinking purposes originates from Ordovician and Silurian carbonate rocks. The content of fluoride in Silurian–Ordovician aquifer system is associated with the groundwater abstraction depth and the main controlling factors of dissolved fluoride are the pH value and the chemical type of water.
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References
ADA (2001) Position of the American Dietetic Association: the impact of fluoride on health. J Am Diet Assoc 101:126–132
Adriano DC (1986) Trace elements in the terrestrial environment. Springer, Berlin Heidelberg New York
Bergström SM, Huff WD, Kolata DR, Bauert H (1995) Nomenclature, stratigraphy, chemical fingerprinting, and areal distribution of some Middle Ordovician K-bentonites in Baltoscandia. GFF 117:1–13
Barclay J, Carroll M, Houghton B, Wilson C (1996) Pre-eruptive volatile content and degassing history of an evolving peralkaline volcano. J Volcanol Geoth Res 74:75–87
Billings RJ, Berkowitz RJ, Watson G (2004) Teeth. Pediatrics 113:1120–1127
Carpenter R (1969) Factors controlling the marine geochemistry of fluorine. Geochim Cosmochim Acta 33:1153–1167
Connett P (2003) US National Research Council Subcommittee on fluoride in drinking water. Fluoride 36:280–289
Council directive 98/83/EC (1998) On the quality of water intended for human consumption. Official Journal L 330, 05/12/1998 P. 0032–0054
Grobler SR, van Wyk CW, Kotze D (1986) Relationship between enamel fluoride levels, degree of fluorosis and caries experience in communities with a nearly optimal and a high fluoride level in the drinking water. Caries Res 20:284–288
Cronin SJ, Neall VE, Lecointre JA, Hedley MJ, Loganathan P (2003) Environmental hazards of fluoride in volcanic ash: a case study from Ruapehu volcano, New Zealand. J Volcanol Geoth Res 121:271–291
Czarnowski W, Krechniak J, Urbańska B, Stolarska K, Taraszewska-Czarnowska M, Muraszko-Klaudel A (1999) The impact of water-borne fluoride on bone density. Fluoride 32:91–95
Handa BK (1975) Geochemistry and genesis of fluoride-containing ground waters in India. Ground Water 13:275–281
Huff WD, Bergström SM, Kolata DR, Sun H (1998) The Lower Silurian Osmundsberg K-bentonite. Part II mineralogy, geochemistry, chemostratigraphy and tectonomagmatic significance. Geol Mag 135:15–26
Joogivee kvaliteedi-ja kontrollinõuded ning analüüsimeetodid (2001) (The quality and monitoring requirements for drinking water and methods of analysis) RTL 2001/100/1369 (in Estonian)
Kabata-Pendias A, Pendias H (1992) Trace elements in soils and plants. CRC Press Inc., Boca Raton
Karise V (1997) Composition and properties of groundwater under natural conditions. In: Raukas A, Teedumäe A (eds) Geology and mineral resources of Estonia. Estonian Academy Publishers, Tallinn, pp 152–156
Karro E, Marandi A (2003) Mapping of potentially hazardous elements in Cambrian-Vendian aquifer system, northern Estonia. Bull Geol Soc Finland 75:17–27
Kiik V (1973) Hambakaaries ja vee fluorisisaldus Eestis (in Estonian). Eesti Loodus 9:538–540
Kiipli T, Kiipli E, Kallaste T (1997) Metabentonite composition related to sedimentary facies in the Lower Silurian of Estonia. Proc Estonian Acad Sci Geol 46:93–104
Kiipli T, Männik P, Batchelor RA, Kiipli E, Kallaste T, Perens H (2001) Correlation of Telychian (Silurian) altered volcanic ash beds in Estonia, Sweden and Norway. Norw J Geol 81:179–194
Kuik L (1963) Joogivete fluori- ja joodisisaldusest Eesti NSV-s (in Estonian). Kurortoloogilised uurimused 2:39–45
Kurttio P, Gustavsson N, Vartiainen T, Pekkanen J (1999) Exposure to natural fluoride in well water and hip fracture: a cohort analysis in Finland. Am J Epidemiol 150:817–824
Lahermo P, Sandström H, Malisa E (1991) The occurrence and geochemistry of fluorides in natural waters in Finland and East Africa with reference to their geomedical implications. J Geochem Explor 41:65–79
Lu Y, Sun ZR, Wu LN, Wang X, Lu W, Liu SS (2000) Effect on high-fluoride water on intelligence of children. Fluoride 33:74–78
Narusk M, Nittim M (2003) Eesti veemajanduse ülevaade veekasutuse aruande alusel (Review of Estonian water management based on statistical reports on water management) (in Estonian). Keskkonnaministeeriumi Info- ja Tehnokeskus, Tallinn
Perens R, Vallner L (1997) Water-bearing formation. In: Raukas A, Teedumäe A (eds) Geology and mineral resources of Estonia. Estonian Academy Publishers, Tallinn, pp 137–145
Perens R, Savva V, Lelgus M, Parm T (2001) The hydrogeochemical atlas of Estonia (CD version). Geological Survey of Estonia, Tallinn
Phipps K (1995) Fluoride and bone health. J Public Health Dent 55:53–56
Raukas A, Teedumäe A (1997) Geology and mineral resources of Estonia. Estonian Academy Publishers, Tallinn
Russak S, Indermitte E, Saava A (2002) Dental fluorosis and caries among Tartu children in relation to drinking water fluoride content. Yearbook of the Estonian Anthropometric Register pp 78–192
Saava A (1998) Health hazards due to drinking water. Proc Latvian Acad Sci 52:162–167
Saava A, Uibo M, Ratnik V (1973) Mikroelementide sisaldus Eesti vees ja nende osa kohalikus patoloogias (in Estonian). Eesti Loodus 10:606–608
Saxena VK, Ahmed S (2001) Dissolution of fluoride in groundwater: a water-rock interaction study. Environ Geol 40:1084–1087
Skinner BJ, Turekian KK (1973) Man and the ocean. Prentice-Hall, Inc., Englewood Cliffs
Standard methods for the examination of water and wastewater (1989) 17th edn. American Public Health Association/American Water Works Association/Water Environment Federation. Washington DC
Vingisaar P, Gulova H, Kiipli T, Taalmann V (1981) Distribution of microcompounds in the Estonian Ordovician and Silurian carbonate rocks. Proc Estonian Acad Sci Geol 30:106–109
WHO (2004) Guidelines for drinking-water quality. 3rd edn. World Health Organisation, Geneva
Xiang Q, Liang Y, Chen L, Wang C, Chen B, Chen X, Zhou M (2003) Effect of fluoride in drinking water on children’s intelligence. Fluoride 36:84–94
Zohouri FV, Rugg-Gunn AJ (2000) Sources of dietary fluoride intake in 4-year-old children residing in low, medium and high fluoride areas in Iran. Int J Food Sci Nutr 51:317–326
Acknowledgements
This study was financially supported by Estonian Public Health Foundation grant No 99–56, Estonian Science Foundation grant No 5683 and Estonian Society of Stomatology. The technical assistance of MSc. Alar Rosentau is gratefully acknowledged.
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Karro, E., Indermitte, E., Saava, A. et al. Fluoride occurrence in publicly supplied drinking water in Estonia. Environ Geol 50, 389–396 (2006). https://doi.org/10.1007/s00254-006-0217-1
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DOI: https://doi.org/10.1007/s00254-006-0217-1