Effluent WOF


1 min read

Dairy Effluent WOF How much is the service? Choosing a certified assessor Recognising 'WOF'

The Dairy Effluent 'Warrant of Fitness' (WOF) is a voluntary programme that assesses your farm's effluent system to ensure it's compliant throughout the year. By taking part in this, you will get a brief report from a trained and certified independent professional, identifying practical steps you can take to make sure your system is fit for purpose. The assessment covers various aspects, such as nutrient budgets and storage facility risks, and takes three to four hours. Costs range from $800 to $1,300 depending on your farm's size. The programme helps you identify and address potential risks and is voluntary at this stage.

The Dairy Effluent ‘Warrant of Fitness’ (WOF) is a voluntary programme assessing your effluent system.

It helps you understand all the requirements to make sure your system is fit for purpose and capable of being compliant 365 days a year.

You will receive a brief report with practical actions you can take.

The assessment is carried out by a trained and certified independent professional and takes three to four hours.

More detailed information can be found on www.effluentwof.co.nz with contact details of Certified WOF assessors in your region.

Dairy Effluent WOF video

Getting a dairy effluent warrant of fitness is voluntary and confidential, the video below shows what's involved and the benefits of getting an effluent WOF.

Farm dairy effluent warrant of fitness

Video 3:45 min

What is the Dairy Effluent 'WOF'?

  • This looks at your farm’s effluent consent or permitted rules: are all requirements being met?
  • Views the nutrient budget and checks nitrogen loadings
  • Runs the dairy effluent storage calculator to estimate if there is enough storage for the farm effluent system
  • Checks over the storage facility for signs of possible risk areas
  • Looks at all catchment areas, particularly stand-offs, feedpads and underpasses
  • Tests the application depth and rate of the irrigation system
  • Identifies the hazards and notes general health and safety requirements

How much does this service cost me?

This depends on the size of your farm. It will probably be in the range of $800 to $1,300. The certified 'WOF' assessor will give you an estimate before coming to your farm.

Why should I choose a certified assessor?

A certified assessor is an independent, experienced industry professional. To become certified, the assessor has completed a three-day training course and passed a competency assessment process. The assessor is committed to observing a Code of Conduct to guarantee professional behaviour and independent advice.

Do councils recognise the 'WOF'?

At this stage the ‘WOF’ is a voluntary programme that helps you identify and address risks.

For more information, download the WOF brochure.

Last updated: Aug 2023

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