Review of the impact of the 1999 Water Regulation in reducing Cryptosporidium contamination risk in groundwater public supplies

Authors: Morris, B.; Whitehead, E. J.

Source: Water and Environment Journal, Volume 21, Number 1, March 2007 , pp. 74-81(8)

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Abstract:

In 2000, the UK introduced a Cryptosporidium oocyst monitoring programme for groundwater public supplies as a consequence of a 1999 amendment to statutory water quality regulations in England and Wales. The programme, which is ongoing and was estimated to have cost c. £12 million (€17.4 million) by the end of 2005, has accumulated the largest and most comprehensive array of data on the presence of oocysts in raw groundwater in the UK to date, with 90 water treatment works subjected to continuous monitoring at one time or another between 2000 and 2005. The programme was preceded by a scrutiny of the future of over 180 groundwater supplies identified as significantly at risk by the 19 water utilities concerned. The results of this process and of the monitoring programme up to 2005 are examined and critically reviewed.

Keywords: British aquifers; Cryptosporidium; groundwater; monitoring; public water supply; risk assessment

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1747-6593.2006.00049.x

Affiliations: 1: British Geological Survey, Wallingford, Oxon, UK

Publication date: 2007-03-01