# The Air Quality Limit Values Regulations 2001, Regulation 4: Assessment of ambient air quality


The Secretary of State shall ensure that ambient air quality is assessed in each zone in relation to each of the relevant pollutants in accordance with regulations 5 to 7.

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Source: https://www.legislation.gov.uk/uksi/2001/2315/regulation/4 (the official version)
Page: https://openlegislation.uk/air-quality-limit-values-regulations-2001/regulation-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.