Guidance

Monitoring discharges to water: CEN and ISO monitoring methods

Formerly part of M18, index of CEN and ISO monitoring methods for monitoring discharges to water.

From:
Environment Agency
Published
11 June 2020
Last updated
18 January 2023 — See all updates

Applies to England

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Monitoring discharges to water: CEN and ISO monitoring methods

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The methods in this document are international standards recommended by regulation.

Updates to this page

Published 11 June 2020
Last updated 18 January 2023 + show all updates

  1. New standards added for biochemical oxygen demand (BOD), cyanide, nitrogen (total), total organic carbon, organochlorine pesticides, polycyclic aromatic hydrocarbons, short-chain polychlorinated alkanes, and volatile organic carbons. Those for BOD and nitrogen (total) supersede previous versions.

  2. First published.

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