# Council Directive of 21 May 1991 concerning urban waste water treatment (91/271/EEC), Division 5

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

Extreme values for the water quality in question shall not be taken into consideration when they are the result of unusual situations such as those due to heavy rain.

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Source: https://www.legislation.gov.uk/eudr/1991/271/annex/I/division/D/division/5 (the official version)
Page: https://openlegislation.uk/eu-directive-1991-271/annex-I/division-D/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.