Cited by 591Water Treatment and DisinfectionEffects and risks of endocrine disrupting chemicalsToxic Organic Pollutants Impact

Chlorination disinfection byproducts in water and their association with adverse reproductive outcomes: a review

Open access
Nieuwenhuijsen, Mark J, Toledano, Mireille B, Eaton, Naomi E, Fawell, John, Elliott, Paul·2000·Occupational and Environmental Medicine

Abstract

OBJECTIVES AND METHODS: Chlorination has been the major disinfectant process for domestic drinking water for many years. Concern about the potential health effects of the byproducts of chlorination has prompted the investigation of the possible association between exposure to these byproducts and incidence of human cancer, and more recently, with adverse reproductive outcomes. This paper evaluates both the toxicological and epidemiological data involving chlorination disinfection byproducts (DBPs) and adverse reproductive outcomes, and makes recommendations for future research. RESULTS AND CONCLUSIONS: Relatively few toxicological and epidemiological studies have been carried out examining the effects of DBPs on reproductive health outcomes. The main outcomes of interest so far have been low birth weight, preterm delivery, spontaneous abortions, stillbirth, and birth defects— in particular central nervous system, major cardiac defects, oral cleft, and respiratory, and neural tube defects. Various toxicological and epidemiological studies point towards an association between trihalomethanes (THMs), one of the main DBPs and marker for total DBP load, and (low) birth weight, although the evidence is not conclusive. Administered doses in toxicological studies have been high and even though epidemiological studies have mostly shown excess risks, these were often not significant and the assessment of exposure was often limited. Some studies have shown associations for DBPs and other outcomes such as spontaneous abortions, stillbirth and birth defects, and although the evidence for these associations is weaker it is gaining weight. There is no evidence for an association between THMs and preterm delivery. The main limitation of most studies so far has been the relatively crude methodology, in particular for assessment of exposure. RECOMMENDATIONS: Large, well designed epidemiological studies focusing on well defined end points taking into account relevant confounders and with particular emphasis on exposure characterisation are ideally needed to confirm or refute these preliminary findings. In practice, these studies may be impracticable, partly due to the cost involved, but this is an issue that can be put right—for example, by use of subsets of the population in the design of exposure models. The studies should also reflect differences of culture and water treatment in different parts of the world. To identify the specific components that may be of aetiological concern and hence to fit the most appropriate exposure model with which to investigate human exposure to chlorinated DBPs, further detailed toxicological assessments of the mixture of byproducts commonly found in drinking water are also needed.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1136/oem.57.2.73

Cites

76 of 76 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 10

  1. [21]21. Delaney JC, Wolfe GW, Kaiser L, et al. Short term reproductive and developmental eVects of chlorodibro- momethane in S-D rats when administered in drinking water. Toxicologist 1997;36:257
  2. [24]24. Exon JH, Henningson GM, Osborne CA, et al. Toxicologi- cal, pathological and immunotoxicological eVects of 2,4-dichlorophenol in rats. J Toxicol Environ Health 1984;14:723-30.
  3. [27]27. Linder RE, Klinefelter GR, Strader LF, et al. Spermatotox- icity of dichloroacetic acid. Reprod Toxicol 1997;11:681-8.
  4. [29]29. Linder RE, Klinefelter GL, Strader LF, et al. Acute sperma- togenic eVects of bromoacetic acids. Fundam Appl Toxicol 1994;22:422-30.
  5. [37]37. Environmental Protection Agency. EPA Workshop and ILSI Risk Science Institute, report of the Panel on Reproductive EVects of Disinfection by-products in Drinking Water. Wash- ington, DC: EPA, 1993.
  6. [39]39. World Health Organisation. Guidelines for drinking water quality, 2nd ed. Vol 2. Health criteria and other supporting information. Chapter 15: pesticides. Geneva: WHO, 1996: 586-787.
  7. [56]56. Klotz JB, Pyrch LA. Neural tube defects and drinking water disinfection by-products. Epidemiology 1999;10:383-90.
  8. [61]61. Keegan T. Trihalomethane levels in the north of England 1992-6 [MSc Thesis]. London: Imperial College Centre for Environmental Technology, 1998.
  9. [69]69. Deane M, Swan SH, Harris JA, et al. Adverse pregnancy outcomes in relation to water contamination, Santa Clara County, California, 1980-1. Am J Epidemiol 1989;129: 894-904.
  10. [79]79. Shaw GM, Halinka LH. Residential mobility during preg- nancy for mothers of infants with or without congenital car- diac anomolies. Arch Environ Health 1991;46:310-12.

Cited by

Sorted by citations

Authors
Nieuwenhuijsen, M. J., Toledano, M. B., Eaton, N. E., Fawell, J., & Elliott, P.
Affiliations
Imperial College London (GB)
Corresponding author
Elliott, Paul
Venue
Occupational and Environmental Medicine
Publisher
BMJ
Published
2000-02-01
Volume
57
Issue
2
Pages
73-85
ISSN
  • 0007-1072 (ISSN-L)
  • 1351-0711
  • 1470-7926
OpenAlex
W2128763002
Cited by
591
References
76
Citations by year
2026: 10 · 2025: 17 · 2024: 17 · 2023: 18 · 2022: 21 · 2021: 28 · 2020: 33 · 2019: 35 · 2018: 23 · 2017: 26 · 2016: 36 · 2015: 28 · 2014: 18 · 2013: 24 · 2012: 30
FWCI
3.13
Type
journal article
Language
en
Open access
Locations
  • Occupational and Environmental Medicine (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
Health and Safety Executive
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Water Treatment and Disinfection
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
Keywords
drinking water, adverse reproductive outcomes, trihalomethanes, low birth weight, preterm birth, miscarriage, stillbirth, congenital malformations, neural tube defects, orofacial clefts, cardiac defects, exposure assessment, exposure models, toxicology
MeSH terms
Chlorine, Disinfection, Environmental Exposure, Female, Humans, Pregnancy, Pregnancy Complications, Water Supply, Water Purification

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review