Septic Tanks

Septic Tanks & Wastewater Treatment Systems

Oasis Aerated Systems utilize settling, filtration and aerobic digestion to process the effluent.

The Oasis Clearwater series 2000 is purpose built for New Zealand conditions, and through a process of filtration, settling and aerobic digestion will quickly and efficiently turn waste household water into high quality irrigation water.

The system comprises of five stages. Wastewater initially goes through two settlement chambers. From here water will flow into a high performance filter (Zabel A300) in the central aeration chamber where further biological and mechanical filtration will occur. During this process thousands of tiny air bubbles are created by the series 2000 fine air diffuser assembly. This mixes the contents of the filter at a constant rate providing essential oxygen for the aerobic digestion and cleansing process. This process will continue as water flows through until it is finally moved to the outflow chamber.

For septic tanks, we believe “every drop counts”, which is why we install Oasis Clearwater systems that are designed to provide a sustainable solution for effectively processing and recycling all domestic sewage and grey water.

  • We will help you out if you’re in the $#*@!
  • We have a camera to check out the problem.
  • We will do it right the first time.
  • We do repairs and new home work.
  • Having loads of experience to guide you to making designs that work.

Advantages of the Aerated Wastewater System

Rated Capacity:

  • System based on an 8 Person Domestic situation.
  • Provide 2000l Hydraulic flow per day.

Home Owners:

  • Maintenance and operating costs are minimized.
  • Environmentally sustainable practice.
  • Owners quality of life enhanced by improved water quality.

Benefits for local Government:

  • Low maintenance and highly reliable systems.
  • Operating costs are minimized.
  • Increase public health and protection.

Oasis Clearwater Waste Management Systems:

  • A wastewater system to suit every environment and every need.
  • The most advance form of on-site waste water system available.
  • Separates out the solids but also filters the wastewater prior to dispersing it.
  • Simple proven technology.
  • Improved effluent quality compared to a standard septic tank.
  • Minimal working parts making it easy to maintain.
  • Designed and made in New Zealand for our conditions.
  • Economical – our air blowers use 36% less power than conventional blowers.


For a quote or more info, fill in your details below and we'll get back to you as soon as we can.

Call our office team on 0800 587 586 to talk about how we work, our range of septic tanks, and to organise a free quote from one of our team. You can also view a full online brochure below to help assess which septic tank will work best for your needs.

Call our team on 0800 587 586

Get in touch to talk about how we work, your requirements, and to organise a free quote from one of our team.



We offer our 8 Point Gold Guarantee on all our work, promising safety, security,  great communication, extended maintenance, and more.

Click here to read the guarantee in full


Prevention is the key to maintaining the great condition of the plumbing in your home. Take a look at our Plumbing Maintenance Checklist for a list of simple checks you can carry out to ensure the wellbeing of your plumbing.

Click here to read our maintenance checklist