For the past 30 years, we have been
providing drainage services for the
residential market. From detention
tanks and soakage pits to everything in between, we will provide you with peace of mind in knowing that your drainage work below the ground is completed to a high standard using certified drainlayers and New Zealand-made products.

DownUnderPlumbing’s team of certified
drainlayers and professional
consultants will help you to design
the system best suited for your
lifestyle property. We provide
solutions for safe water storage,
energy efficient pump systems, and
environmentally effective septic
treatment systems, helping to
protect your health and the health
of your family and community.

DownUnderPlumbing provides well-designed and perfectly-installed drainage systems.  We will work efficiently and effectively with your team to ensure that your project objectives are met. We will complete the job in the required time-frame and meet all health and safety requirements along the way. By using New Zealand products, we can ensure quality drainage systems are installed to meet all NZ building code requirements.

With our experienced team of Certified Drainlayers and Excavator Operators, you can trust that your project will run smoothly from start to finish.