WaterFlow Resource Hub Articles

Protecting the Waitao Stream: three new EconoTreat wastewater systems for a kaumātua papakāinga in Welcome Bay

The owners of a rural block in the Waitākere Ranges, West Auckland, spent more than two years waiting on their modular home, while the plans kept changing. WaterFlow stayed with them the whole way, checking in every couple of months and redesigning their NaturalFlow wastewater system three times at no extra cost, until it was finally installed in November 2023.

How WaterFlow gave a rural Whangārei school a wastewater system built for the next generation.

Understand primary and secondary wastewater treatment, what each removes, and why your soil and disposal method help determine the level your home needs.

Compare concrete and plastic wastewater tanks, including access, strength, groundwater, burial depth and installation costs. Find out what suits your site.

Compare worm-based and aerated wastewater treatment. Understand how NaturalFlow, BioPod and EconoTreat differ in power use, treatment and maintenance.

Compare septic tanks and worm-based wastewater systems. Learn how they work, whether they need pump-outs, and what to expect for power and maintenance.

Understand how septic tanks and aerated systems work, what happens to the waste, and the differences in cost, servicing and disposal.

See what WaterFlow checks during a free site visit, what common NZ soils mean for drainage, and how soil testing helps shape your wastewater design.

Allow around 100 m² per bedroom for drip irrigation as an early guide. Learn why wastewater fields need suitable land, but not necessarily flat ground.

Allow around 100 m² per bedroom for drip irrigation as an early guide. Learn why wastewater fields need suitable land, but not necessarily flat ground.

Learn how clay soil affects wastewater drainage, why treatment alone is not enough, and how the right disposal field can help your system work properly.

Buying a wastewater system in NZ? Know what to ask about reports, site assessments, council consent, installation costs and ongoing maintenance.

Get a clear NZ guide to do i need primary, secondary or advanced secondary treatment, with practical WaterFlow guidance on treatment, disposal, lifestyle...

EconoTreat, NaturalFlow and BioPod can all serve rural homes, but they solve different problems.

Compare active and passive wastewater treatment, including power, servicing and whether EconoTreat, NaturalFlow or BioPod suits your NZ property.

Compare concrete and plastic wastewater tanks for rural NZ properties, including access, groundwater, installation, transport and long-term performance.

Learn which onsite wastewater system you need when a rural NZ property has no mains sewer, including treatment, disposal, consent and installation.

A flat section doesn’t favour one particular wastewater system. The more useful question is whether the ground drains well or stays wet, because that determines how you can return treated wastewater to the land.

Building on a gently sloping section? Learn when gravity-fed wastewater can work, whether you’ll need a pump and how to plan your tank and disposal field.

Building on a small rural section? Learn how soil, house size and disposal-field space determine the right wastewater system for your property.

Large families do not only produce more wastewater. They also create sharper peaks from morning showers, laundry, cooking, visitors and busy weekends. The system must handle the way the household actually lives.

The important point is that a 1-2 bedroom wastewater system is designed for the potential occupancy of the house, not only the number of people living there today.

The important point is that a four-bedroom wastewater system is designed for the potential occupancy of the house, not only the number of people living there today.

If your rural property cannot connect to the town sewer, you will need an onsite wastewater system. But which type?

If your rural property cannot connect to the town sewer, you will need an onsite wastewater system. But which type?