Nitrates, chlorates and trihalomethanes in swimming pool water

Am J Public Health. 1980 Jan;70(1):79-82. doi: 10.2105/ajph.70.1.79.


Water from swimming pools in the Miami area was analyzed for nitrates, chlorates and trihalomethanes. The average concentrations of nitrate and chlorate found in freshwater pools were 8.6 mg/liter and 16 mg/liter respectively, with the highest concentrations being 54.9 mg/liter and 124 mg/liter, respectively. The average concentration of total trihalomethanes found in freshwater pools was 125 micrograms/liter (mainly chloroform) and in saline pools was 657 micrograms/liter (mainly bromoform); the highest concentration was 430 micrograms/liter (freshwater) and 1287 micrograms/liter (saltwater). The possible public health significance of these results is briefly discussed.

MeSH terms

  • Chlorates / analysis*
  • Chloroform / analysis*
  • Florida
  • Humans
  • Nitrates / analysis*
  • Swimming Pools*


  • Chlorates
  • Nitrates
  • Chloroform