We use some essential cookies to make this website work.

We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.

We also use cookies set by other sites to help us deliver content from their services.

You can change your cookie settings at any time.

Search for a department and find out what the government is doing

Departments, agencies and public bodies

News stories, speeches, letters and notices

Detailed guidance, regulations and rules

Reports, analysis and official statistics

Data, Freedom of Information releases and corporate reports

This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated. To view this licence, visit nationalarchives.gov.uk/doc/open-government-licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: psi@nationalarchives.gov.uk.

Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concerned.

This publication is available at https://www.gov.uk/government/publications/monitoring-discharges-to-water-cen-and-iso-monitoring-methods/monitoring-discharges-to-water-cen-and-iso-monitoring-methods

These are the monitoring methods for general wastewater quality indicators and inorganic parameters (excluding metals).

See also BS ISO 15923-1.

See also BS ISO 15923-1.

See also anions by ion chromatography and inorganic parameters by discrete analyser.

See also inorganic parameters by discrete analyser.

For total phosphorus see also trace metals (BS EN ISO 11885).

See anions by ion chromatography and inorganic parameters by discrete analyser.

These are the monitoring methods for trace metals.

These are the monitoring methods for organic determinands.

Don’t include personal or financial information like your National Insurance number or credit card details.

To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone.