A Gradient Drainage Ltd

12/06/2026

Upload complete! New product launch in full swing down at Fieldays, Mystery Creek.

A Gradient Drainage is now the accredited national distributor for Kubota Wastewater Treatment Plants across New Zealand.
Backed by over 130 years of engineering innovation, Kubota systems deliver reliable, high-performance wastewater treatment trusted by millions worldwide.
We're excited to bring this proven technology to New Zealand homeowners, developers, and communities.
Come and see us at Fieldays to learn more about the Kubota range.

10/06/2026

This job is wrapped up ✅
We provided full drainage solutions for this property in Awaawaroa Bay. Now it’s protected from big downpours that have previously caused a lot of damage🌧️

04/06/2026

An hour’s work in 15 seconds - a little behind the scenes on site 📍Waiheke Island

29/05/2026

Swipe to see what we've been up to over the past couple of weeks on our Awaawaroa site!

27/05/2026

Check out what’s happening at our Awaawaroa site!

08/03/2026

Waiheke weather is changing heavy rain is more common, and older properties weren’t built for it. Good stormwater management stops flooding, prevents washed-out driveways, and keeps sediment off our beaches. Learn practical solutions like channel drains, soak pits and retaining drains to protect your home and coastline

Waiheke’s weather is getting more unpredictable and heavy rainfall events are becoming more frequent. When stormwater isn’t managed properly, the effects are felt fast: • Flooding around homes • Washed-out driveways • Slips on coastal or steep sites • Sediment flowing into streams and be...

08/12/2025

Summer landscaping projects are in full swing! Did you know that planning your drainage is essential to any successful upgrade? Don’t risk pooling water and mosquito breeding by neglecting this key element. Read more about it here:

Summer is the season when Waiheke homeowners upgrade outdoor areas — new decks, pools, gardens, sheds, or entertaining spaces.But one thing many people forget? Drainage is the foundation of every good landscaping job.Without it, you can end up with: • pooling water around decks • soggy lawns ....

20/10/2025

Thinking about a new build? Selecting the right wastewater treatment plant is essential! Read our latest blog to learn how to make the best choice that meets regulations and suits your property. https://wix.to/pucvRZp

Whether you’re building a new home or upgrading an outdated system, choosing the right wastewater treatment plant is essential for the long-term health of your property. On Waiheke Island, where land conditions and environmental standards can vary from site to site, it’s important to select a sy...

05/10/2025

Septic tank on Waiheke? Don’t wait until it’s too late.

A regular service keeps your system healthy, avoids nasty overflows or repairs, and ensures your home—and the environment—stays safe and clean.

At A Gradient Drainage, we’re now offering maintenance contracts where we handle all scheduling, servicing, and upkeep based on your tank’s needs—so you never have to think about it.

Living on Waiheke means many homes rely on onsite wastewater systems like septic tanks. While they quietly go about their work, they’re not “set and forget” — neglecting them can lead to serious, unpleasant, and expensive problems.At A Gradient Drainage, we’ve seen how a little preventativ...

25/09/2025

Have you considered how important it is to choose a local drainage expert for your needs on Waiheke Island? 🌅 With challenges like no central water supply, it's time to ensure your systems are in expert hands! Read more: https://wix.to/gjM3xSl