Environmental management – collection

Monitoring emissions to air, land and water (MCERTS)

Business emissions to air, land and water are regulated under strict European and UK laws, to protect the environment and human health.

If your company needs to comply with these laws you will need a permission from us to operate. This permission usually comes in the form of a permit, which usually requires you to monitor your emissions.

Businesses either monitor their emissions all the time, known as continuous monitoring, or at times defined in their permit, known as spot tests or periodic monitoring. In both cases they must meet our quality requirements.

MCERTS is the Environment Agency’s Monitoring Certification Scheme. It provides the framework for businesses to meet our quality requirements. If you comply with MCERTS we can have confidence in the monitoring of emissions to the environment.

MCERTS is used to approve instruments, people and laboratories.

Find an MCERTS accredited laboratory

Find a list of MCERTS certified instruments and products

Download the Method Implementation Documents (MIDs) for stack emission monitoring

Monitoring guides

  1. RM-QG01: selecting continuous emission monitoring systems (CEMs)

    • 9 January 2012
    • Guidance
  2. RM-QG02: selecting continuous emission monitoring systems (CEMs) for installations falling under the Waste Incineration Directive (WID)

    • 7 April 2014
    • Guidance
  3. RM-QG04: monitoring under the Waste Incineration Directive (WID) when continuous emission monitoring systems (CEMs) are not available

    • 7 April 2014
    • Guidance
  4. RM-QG08: selecting an accredited laboratory for stack emissions monitoring

    • 7 April 2014
    • Guidance
  5. RM-QG10: auditing protocol to assess compliance of reports produced for EN 14181

    • 26 June 2015
    • Statutory guidance
  6. RM-QG12: selecting suitable operating ranges for CEMs which have user-adjustable ranges

    • 7 April 2014
    • Guidance
  7. M1 sampling requirements for stack emission monitoring

    • 1 January 2010
    • Guidance
  8. M2 monitoring of stack emissions to air

    • 7 April 2014
    • Guidance
  9. M3 how to assess monitoring arrangements for emissions to air in permit applications

    • 7 April 2014
    • Guidance
  10. M4 guidelines for ash sampling and analysis

    • 7 April 2014
    • Guidance
  11. M8 monitoring ambient air

    • 7 April 2014
    • Guidance
  12. M15 monitoring PM10 and PM2.5

    • 7 April 2014
    • Guidance
  13. M16 monitoring volatile organic compounds in stack gas emissions

    • 7 April 2014
    • Guidance
  14. M17 monitoring of particulate matter in ambient air around waste facilities

    • 7 April 2014
    • Guidance
  15. Monitoring discharges to water and sewer: M18 guidance note

    • 7 April 2014
    • Guidance
  16. M20 quality assurance of continuous emission monitoring systems

    • 26 June 2015
    • Statutory guidance
  17. M21 stationary source emissions

    • 7 April 2014
    • Guidance
  18. M22 measuring stack gas emissions using FTIR instruments

    • 7 April 2014
    • Guidance