# Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption, Part A: Microbiological parameters for which methods of analysis are specified

Extent: E+W+S+N.I.

The following principles for methods of microbiological parameters are given either for reference, whenever a CEN/ISO method is given, or for guidance, pending the possible future adoption by the Commission of further CEN/ISO international methods for those parameters. Member States may use alternative methods, providing the provisions of Article 7(5) are met.
Those measures on further CEN/ISO international methods, designed to amend non-essential elements of this Directive, inter alia , by supplementing it, shall be adopted in accordance with the regulatory procedure with scrutiny referred to in Article 12(3).
The methods for microbiological parameters are:
(a) Escherichia coli ( E. coli ) and coliform bacteria (EN ISO 9308-1 or EN ISO 9308-2)
(b) Enterococci (EN ISO 7899-2)
(c) Pseudomonas aeruginosa (EN ISO 16266)
(d) enumeration of culturable microorganisms — colony count 22 °C (EN ISO 6222)
(e) enumeration of culturable microorganisms — colony count 36 °C (EN ISO 6222)
(f) Clostridium perfringens including spores (EN ISO 14189).

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Source: https://www.legislation.gov.uk/eudr/1998/83/annex/III/part/A (the official version)
Page: https://openlegislation.uk/eu-directive-1998-83/annex-III/part-A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.