Wastewater Dispersal Design
Modern Systems for Sustainable Wastewater Management
Where properties are not connected to the public wastewater network, effective on-site wastewater dispersal is essential. The days of relying solely on septic tanks and scoria trenches are behind us. Modern solutions involve advanced treatment systems designed to protect both the environment and human health. By employing domestic packaged wastewater treatment plants, which include a septic tank followed by a treatment tank, treated effluent is safely pumped to an irrigation field for dispersal into the ground surface.
These systems meet stringent Council requirements, ensuring minimal environmental impact and compliance with modern wastewater standards.
Navigating Compliance with Ease
For most standard dwellings, wastewater dispersal field design is a Permitted Activity, applied for at the Building Consent stage. However, larger dwellings, smaller sites, or properties with a higher environmental risk may require a Resource Consent application. KGA is equipped to handle both Permitted Activity and Resource Consent wastewater dispersal designs.
With our expertise, you can be confident that your system will meet Council standards and safeguard the environment.
Expertise Tailored to Your Property’s Needs
KGA’s wastewater dispersal designs adhere to Auckland Council Technical Publication 58 (TP58) and NZS 1547:2012. Each design considers the following:
Property Size and Bedroom Count:
The size of the irrigation field is determined by the number of bedrooms and the type of soil.
Subsurface Exploration:
Investigations are carried out to assess subsoil composition and groundwater levels.
Site Walkover Inspection:
A thorough inspection ensures there are no surface features, such as unstable ground or water bodies, that could hinder wastewater dispersal.
These processes ensure that wastewater dispersal systems are safe, efficient, and environmentally responsible, meeting both Council requirements and property-specific needs.