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Description of trihalomethane levels in three UK water suppliers

Abstract

Samples of drinking water are routinely analysed for four trihalomethanes (THMs), which are indicators of by-products of disinfection with chlorine, by UK water suppliers to demonstrate compliance with regulations. The THM data for 1992–1993 to 1997–1998 for three water suppliers in the north and midlands of England were made available for a UK epidemiological study of the association between disinfection by-products and adverse birth outcomes. This paper describes the THM levels in these three supply regions and discusses possible sources of variation. THM levels varied between different suppliers' water, and average THM levels were within the regulatory limits. Chloroform was the predominant THM in all water types apart from the ground water of one supplier. The supplier that distributed more ground and lowland surface water had higher dibromochloromethane (DBCM) and bromoform levels and lower chloroform levels than the other two suppliers. In the water of two suppliers, seasonal fluctuations in bromodichloromethane (BDCM) and DBCM levels were found with levels peaking in the summer and autumn. In the other water supplier, chloroform levels followed a similar seasonal trend whereas BDCM and DBCM levels did not. For all three water suppliers, chloroform levels declined throughout 1995 when there was a drought period. There was a moderate positive correlation between the THMs most similar in their structure (chloroform and BDCM, BDCM and DBCM, and DBCM and bromoform) and a slight negative correlation between chloroform and bromoform levels.

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References

  • Aiken G., and Cotsaris E. Soil and hydrology: their effect on NOM. J Am Water Works Assoc 1995: 87(1): 36.

    CAS  Article  Google Scholar 

  • Amy G.L., Tan L., and Davis M.K. The effect of ozonation and activated carbon absorption on trihalomethane spceciation. Water Res 1991: 25(2): 191.

    CAS  Article  Google Scholar 

  • Breach R.A. Severn Trent Water Disinfection and disinfection by-products in Great Britain: final report to ISPRA. In: An Assessment of the Presence of Trihalomethanes (THMs) in Water Intended for Human Consumption and the Practical Means to Reduce Their Concentrations Without Compromising Disinfection Efficiency. EU Joint Research Centre (JRC) at ISPRA on Behalf of the EC. European Commission Joint Research Centre, Ispra, Italy, June 1996.

    Google Scholar 

  • Chen W.J., and Weisel C.P. Halogenated DBP concentrations in a distribution system. J Am Water Works Assoc 1998: 90: 151–163.

    CAS  Article  Google Scholar 

  • Doré M., Merlet N., Legube B., and Croué J.-P. Interactions between ozone, halogens and organic compounds. Ozone Sci Eng 1988: 10: 153.

    Article  Google Scholar 

  • Keegan T., Whitaker H., Nieuwenhuijsen M.J., Toledano M.B., Elliot P., Fawell J., Wilkinson M., and Best N. The use of routinely collected trihalomethane drinking water data for epidemiological purposes. Occup Environ Med 2001: 58(7): 447–452.

    CAS  Article  Google Scholar 

  • King W.D., Dodds L., and Allen A.C. Relation between stillbirth and specific chlorination by-products in public water supplies. Environ Health Perspect 2000: 108(9): 883–886.

    CAS  Article  Google Scholar 

  • Krasner S.W., Croué J.-P., Buffle J., and Perdue E.M. Three approaches to characterising NOM. J Am Water Works Assoc 1996: 88(6): 66.

    CAS  Article  Google Scholar 

  • Krasner S.W., McGuire M.J., Jacangelo J.G., Patania N.L., Reagan K.M., and Aieta E.M. The occurrence of disinfection by-products in US drinking water. J Am Water Works Assoc 1989: 81: 41–53.

    CAS  Article  Google Scholar 

  • Krasner S.W., Reagan K.M., Jacangelo J.G., Patania N.L., Aieta E.M., and Gramith K.M. Relationships between disinfection by-products and water quality parameters: implications for formation and control. In: Proceedings from the 1990 American Water Works Association Conference, Cincinnati, OH, AWWA, Denver, CO. 1990: 1803–1830 (Part 2).

    Google Scholar 

  • Krasner S.W., Sclimenti M.J., and Means E.G. Quality degradation: implications for DBP formation. J Am Water Works Assoc 1994: 86(6): 34.

    CAS  Article  Google Scholar 

  • Krasner S.W. Chemistry and occurrence of disinfection by-products. In: Craun G.F., Hauchman F.S., and Robinson D.E. (Eds.), Microbial Pathogens and Disinfection By-Products in Drinking Water: Health Effects and Management Risks. International Life Sciences Institute (ISLI) Press, Washington, DC, 2001, pp. 197–209.

    Google Scholar 

  • McGuire M.J., and Meadow R.G. AWWARF trihalomethane survey. J Am Water Works Assoc 1988: 80: 61–68.

    CAS  Article  Google Scholar 

  • Nieuwenhuijsen M.J., Toledano M.B., Eaton N.E., Elliott P., and Fawell J. Chlorination disinfection by-products in water and their association with adverse reproductive outcomes: a review. Occup Environ Med 2000: 57: 73–85.

    CAS  Article  Google Scholar 

  • Reckhow D.A., and Singer P.C. Mechanism of organic halide formation during fulvic acid chlorination and implications with respect to preozonation. In: Jolley R.L. (Ed.), Water Chlorination: Chemistry, Environmental Impact and Health Effects, Vol. 5, Lewis Publications, Chelsea, MI, 1985, pp. 1229–1257.

    Google Scholar 

  • Richardson S.D. Drinking water disinfection by-products. In: Meyers R.A. (Ed.), Encyclopedia of Environmental Analysis and Remediation, Vol. 3. Wiley, New York, 1998, pp. 1398–1421.

    Google Scholar 

  • Symons J.M., Krasner S.W., Simms L.A., and Sclimenti M.J. Measurement of THM and precursor concentrations revisited: the effect of bromide ion. J Am Water Works Assoc 1993: 85(1): 51.

    CAS  Article  Google Scholar 

  • Toledano M.B., Nieuwenhuijsen M.J., Bennett J., Best N., Whitaker H., Cockings S., Fawell J., Jarup L., Briggs D., and Elliott P. Chlorination disinfection by-products and adverse birth outcomes in Great Britain: birthweight and still birth. Technical Report, Department of Epidemiology and Public Health, Imperial College, London. Epidemiology 2001 (submitted for publication).

  • Waller K., Swan S.H., Delorenze G., and Hopkins B. Trihalomethanes in drinking water and spontaneous abortion. Epidemiology 1998: 9(2): 134–140.

    CAS  Article  Google Scholar 

  • Whitaker H., Best N., Nieuwenhuijsen M., and Elliott P. Assessment of ecological exposure to disinfection by-products in drinking water. Epidemiology 2002 (submitted for publication).

Download references

Acknowledgements

The Small Area Health Statistics Unit is funded by a grant from the Department of Health; Department of the Environment, Transport, and the Regions; Health and Safety Executive; Scottish Executive; National Assembly for Wales; and Northern Ireland Assembly. J.F. and A.G. were funded by a contract from UK Water Industry Research. H.W. was supported by a CASE award studentship funded by Medical Research Council and UK Water Industry Research. We are grateful to North West Water, Severn Trent Water, and Northumbrian Water for providing the data and for their assistance and advice during the study.

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Correspondence to Heather Whitaker.

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Whitaker, H., Nieuwenhuijsen, M., Best, N. et al. Description of trihalomethane levels in three UK water suppliers. J Expo Sci Environ Epidemiol 13, 17–23 (2003). https://doi.org/10.1038/sj.jea.7500252

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Keywords

  • chlorination
  • disinfection by-products
  • drinking water
  • trihalomethanes

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