Effluent WOF
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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.
DairyNZ is currently in the process of appointing a new provider for the WOF program.
What is the Dairy Effluent 'WOF'?
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.
What does the assessment look at?
- 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
Program provider
DairyNZ is in the process of appointing a new provider for the WOF program
The previous providers website has been removed, and we are working on the new website for the program. While we are resolving the transition to the new provider, a list of the WOF assessors available can be seen below.
| WOF assessors | Company | Geographical coverage |
| Alan Frost | Dairymaster Milking Systems NZ Ltd | Taranaki/Whanganui/Manawatu |
| Anna Thomas | Independent Project Consultants | Waikato |
| Colin Kay | Kay Consulting Ltd | Taranaki/King Country/Whanganui/Manawatu |
| Craig Strong | Pasture Production Ltd | Canterbury/Otago |
| Dave Stopforth | Enviro Sense Ltd | Canterbury/Otago/Southland |
| Davieith Verheij | AgFirst Engineering (Waikato) Ltd | Waikato/Auckland/Taranaki |
| Donna Corbin | RES - Rural Environmental Solutions | Southland/Otago/South Island |
| Dr Debbie Care | Agvice | Waikato/all |
| Emma Brand | Synlait Milk Limited | Canterbury |
| Glenn Thomas | Independent Project Consultants | Waikato |
| Greig Stephens | First Base Ltd | Southland |
| Hazel Carr | Kakariki Environmental Consultants | Canterbury/Otago/Southland |
| Jeremy Hunt | AgFirst | Waikato/all |
| Jonathan Wright | W Tech | Taranaki |
| Murray Devery | First Base Ltd | Southland/South Island |
| Murray McEwan | McEwan Ag-Nutrients Ltd | Waikato |
| Neil McLean | Agricultural Business Associates | Waikato |
| Nick Hand | Dairy Farm Management Services Ltd | Canterbury/West Coast/North Otago |
| Nikki Kelly | Enviro Sense Ltd | Otago/Southland/Canterbury |
| Paul Brown | Cow Consultant Ltd | South Island |
| Scott McKenzie | Agfirst Engineering Ltd | BOP/Waikato/Gisborne |
| Stephan Capillon | GREEN FLOW Services | Nelson/all |
| Trevor Foley | Reid & Harrison (1980) Ltd | Waikato/North Island |
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.
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.
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.
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 below.
Dairy Effluent WOF Brochure
PDF
Guide
5.1 MB
The Dairy Effluent ‘Warrant of Fitness’ (WOF) is a voluntary programme assessing your effluent system.
Additional resources
Dairy Effluent WOF Brochure
PDF
Guide
5.1 MB
The Dairy Effluent ‘Warrant of Fitness’ (WOF) is a voluntary programme assessing your effluent system.
