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

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

Collecting systems shall take into account waste water treatment requirements.
The design, construction and maintenance of collecting systems shall be undertaken in accordance with the best technical knowledge not entailing excessive costs, notably regarding:
volume and characteristics of urban waste water,
prevention of leaks,
limitation of pollution of receiving waters due to storm water overflows.

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