Full pond redevelopment and yard effluent upgrade – Atiamuri

A comprehensive redevelopment was undertaken to bring the system up to modern Dairy Effluent Storage Calculator standards.

Client

A & L Janssen Ltd

Date

Location

Upper Atiamuri

Key Products

  • New HDPE lined 35x35x3 effluent pond 
  • Fence installation around pond 
  • Williams 3x6 stone trap 
  • Yardmaster 7.8m shore mounted stirrer 
  • Relocate and use existing effluent pump, reinstated on a 5x2 concrete pad
  • All pipe connections 

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Project

The original clay-lined effluent pond on this Atiamuri farm failed a drop test and no longer met storage or environmental compliance standards. The pond lacked the necessary capacity for efficient effluent management and had accumulated significant sludge over years of operation. To complicate matters, the existing PVC pipework from the yard was poorly directed and not connected to any solids separation system—leading to inefficiencies and a higher risk of blockages downstream.

The project included:

  • Desludging the Existing Pond: Full removal of built-up solids to restore function and prepare for resizing.
  • Excavation to DESC Size: The pond was dug to meet updated effluent storage requirements based on farm size and rainfall catchment.
  • Redirection of Existing Yard Outlets: Existing PVC pipes from the yard were redirected to ensure correct flow into new solids separation components.
  • New Stone Trap & Solids Bunker Installed: These key components were added to effectively capture and separate solids before entering the pond system.
  • Yardmaster Shore-Mounted Stirrer: Installed to maintain good pond mixing and prevent future solids build-up.
  • Pump Relocation: The existing pump was moved to better suit the redesigned system and ensure reliable effluent transfer.
  • Project Management: From planning through to completion, full project coordination was provided to ensure timelines, compliance, and quality standards were met.

What we did

This upgraded effluent system now provides several aspects. The pond meets DESC requirements, improving environmental performance and future-proofing the system and provides compliance effluent storage. Better Solids management, the addition of the stone trap and solids bunker improves system longevity and reduces maintenance needs. Redirection of PVC yard outlets has eliminated previous inefficiencies and improved flow and functionality of effluent. The Yardmaster stirrer and relocated pump ensure the system runs smoothly day-to-day, providing efficient stirring and pumping every day. With full project management, the Janssens now have confidence in a seamless, compliant, and  cost-effective solution.

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Products used

  • New HDPE lined 35x35x3 effluent pond 
  • Fence installation around pond 
  • Williams 3x6 stone trap 
  • Yardmaster 7.8m shore mounted stirrer 
  • Relocate and use existing effluent pump, reinstated on a 5x2 concrete pad
  • All pipe connections 

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By the numbers

Here how the impact of Willliams Effluent Solutions system design brought results for Atiamuri farm.

"Our old clay pond just wasn’t cutting it anymore, it failed the drop test and had nowhere near enough storage for what we needed. We knew we had to upgrade, but weren’t sure where to start. The team made the whole process easy from start to finish. They desludged and reshaped the pond to meet DESC standards, redirected all our old pipework, and added a stone trap and solids bunker that have made a huge difference. The Yardy stirrer and relocated pump are working perfectly, and the whole system now runs far more efficiently. What really impressed us was the project management; everything was taken care of, and there were no surprises. It’s a big weight off our shoulders knowing the system is now compliant and future-proofed. We’re really happy with the outcome."

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Tony and Lorraine Janssen

Full pond redevelopment and yard effluent upgrade – Atiamuri

As an off-farm owner, I ultimately chose Williams Effluent Solutions due to their proven experience and the fact that they have the resources to manage the entire project from start to finish. Their ability to take full control of the process gave me peace of mind, knowing that the project would be completed to a high standard. Williams delivered on their promises and made the whole experience stress-free. I would recommend them for anyone looking for a reliable and professional team.

Hamish Hancock
Farm Owner, Wellington

Ready for peace of mind with a reliable effluent system?

Contact us today for a customised solution that eases compliance stress, transforms your farm’s effluent into a valuable resource, and protects your land.

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