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<p>There is no requirement currently for water companies to sample and publish data
on the quality of water entering their waste water treatment plants. However, they
are required to sample treated effluents from their plants which are discharged to
the environment. These samples are analysed and assessed for compliance against protective
environmental permit requirements. This information is reported to the Environment
Agency and published on GOV.UK.</p><p> </p><p>However, a new requirement in S. 82
of the Environment Act 2021 requires sewerage undertakers to continuously monitor
the quality of the receiving water upstream and downstream of their assets. This will
allow sewerage undertakers to assess the impact of discharges from their assets on
the receiving watercourse. The requirement covers both storm overflows and the treatment
works discharges and is being introduced in 2025.</p><p> </p><p><a href="https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fassets.publishing.service.gov.uk%2Fgovernment%2Fuploads%2Fsystem%2Fuploads%2Fattachment_data%2Ffile%2F1149923%2FCWQM_programme_provisional_technical_guidance_for_sewerage_undertakers_April_2023.1.pdf&data=05%7C01%7Cpqteam%40defra.gov.uk%7Cca62d29b78854fa7614208dbd3db821c%7C770a245002274c6290c74e38537f1102%7C0%7C0%7C638336711953438804%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5DgbNalo%2Fh4MHEjm49VyWSVnBJy5UqhWU5R22mHR9sU%3D&reserved=0"
target="_blank">Continuous Water Quality Monitoring Programme - provisional technical
guidance for sewerage undertakers (publishing.service.gov.uk)</a>.</p>
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