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. 1990 Oct;80(10):1230–1235. doi: 10.2105/ajph.80.10.1230

Evaluating the impact of municipal water fluoridation on the aquatic environment.

J W Osterman 1
PMCID: PMC1404812  PMID: 2400035

Abstract

Although highly beneficial for dental health, low concentrations of fluoride in environmental waters may be toxic to several organisms. In an era of heightened public awareness about the environment, this may lead city officials to withhold implementing water fluoridation for environmental reasons. This paper presents a mass balance approach to evaluate this perceived risk. Generally speaking, fluoridated water loss during use, dilution of sewage by rain and ground water infiltrate, fluoride removal during secondary sewage treatment, and diffusion dynamics at effluent outfall combine to eliminate fluoridation-related environmental effects. In Montreal, water fluoridation would raise average aquatic fluoride levels in the waste water plume immediately below effluent outfall by only 0.05-0.09 mg/l. Downstream, these changes would be only 0.02-0.05 mg/l at 1 km, and 0.01-0.03 mg/l at 2 km below outfall. Overall river fluoride concentrations theoretically would be raised by 0.001-0.002 mg/l, a value not measurable by current analytical techniques. All resulting concentrations would be well below those recommended for environmental safety and would not exceed natural levels found elsewhere in Quebec. A literature review did not reveal any examples of municipal water fluoridation causing recommended environmental concentrations to be exceeded, although excesses occurred in several cases of severe industrial water pollution.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Brustman B. A. Impact of exposure to fluoride-adequate water on root surface caries in elderly. Gerodontics. 1986 Dec;2(6):203–207. [PubMed] [Google Scholar]
  2. Corbin S. B. Fluoridation then and now. Am J Public Health. 1989 May;79(5):561–563. doi: 10.2105/ajph.79.5.561. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Heaney R. P., Baylink D. J., Johnston C. C., Jr, Melton L. J., 3rd, Meunier P. J., Murray T. M., Nagant de Deuxchaisnes C. Fluoride therapy for the vertebral crush fracture syndrome. A status report. Ann Intern Med. 1989 Oct 15;111(8):678–680. doi: 10.7326/0003-4819-111-8-678. [DOI] [PubMed] [Google Scholar]
  4. Klein S. P., Bohannan H. M., Bell R. M., Disney J. A., Foch C. B., Graves R. C. The cost and effectiveness of school-based preventive dental care. Am J Public Health. 1985 Apr;75(4):382–391. doi: 10.2105/ajph.75.4.382. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Kudo A., Garrec J. P., Plebin R. Fluoride distribution and transport along rivers in the French Alps. Ecotoxicol Environ Saf. 1987 Jun;13(3):263–273. doi: 10.1016/0147-6513(87)90025-x. [DOI] [PubMed] [Google Scholar]
  6. Kumar J. V., Green E. L., Wallace W., Carnahan T. Trends in dental fluorosis and dental caries prevalences in Newburgh and Kingston, NY. Am J Public Health. 1989 May;79(5):565–569. doi: 10.2105/ajph.79.5.565. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. NEUHOLD J. M., SIGLER W. F. Chlorides affect the toxicity of fluorides to rainbow trout. Science. 1962 Mar 2;135(3505):732–733. doi: 10.1126/science.135.3505.732. [DOI] [PubMed] [Google Scholar]
  8. Riggs B. L., Hodgson S. F., O'Fallon W. M., Chao E. Y., Wahner H. W., Muhs J. M., Cedel S. L., Melton L. J., 3rd Effect of fluoride treatment on the fracture rate in postmenopausal women with osteoporosis. N Engl J Med. 1990 Mar 22;322(12):802–809. doi: 10.1056/NEJM199003223221203. [DOI] [PubMed] [Google Scholar]
  9. Sigler W. F., Neuhold J. M. Fluoride intoxication in fish: a review. J Wildl Dis. 1972 Jul;8(3):252–254. doi: 10.7589/0090-3558-8.3.252. [DOI] [PubMed] [Google Scholar]
  10. Simonen O., Laitinen O. Does fluoridation of drinking-water prevent bone fragility and osteoporosis? Lancet. 1985 Aug 24;2(8452):432–434. doi: 10.1016/s0140-6736(85)92748-5. [DOI] [PubMed] [Google Scholar]
  11. Singer L., Armstrong W. D. Fluoride in treated sewage and in rain and snow. Arch Environ Health. 1977 Jan-Feb;32(1):21–23. doi: 10.1080/00039896.1977.10667247. [DOI] [PubMed] [Google Scholar]
  12. Sutie J. W. Effects of fluoride on livestock. J Occup Med. 1977 Jan;19(1):40–48. [PubMed] [Google Scholar]
  13. Weinstein L. H. Fluoride and plant life. J Occup Med. 1977 Jan;19(1):49–78. doi: 10.1097/00043764-197701000-00005. [DOI] [PubMed] [Google Scholar]

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