Designers & Installers

Wastewater Designers & Installers

Become AES Certified

Become AES Certified

Complete our free online course to become certified to design and/or install AES systems. Just 2 videos & 80 multi-choice questions.

AES OSET-NTP test results

OSET-NTP Results

An AES system tested in Trials 12 and 13 at OSET-NTP achieved outstanding results, 10x above the NZ secondary treatment requirements.

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Technical Assistance

Our technical team can assist with advice on becoming AES certified and at all stages of your design or installation. Contact us now.

AES Components

AES Components

View the components required in the design and installation of an AES wastewater treatment system and dispersal field.

How AES Works

How AES Works

The AES system is based on fundamental principles of secondary wastewater treatment producing high-quality results.

AES Case Studies

Case Studies

View case studies of AES systems for small to large installations, different site conditions, usage, loads, soil types, etc.

Designer documents

Designing AES

AES design manual and information to assist designers of AES advanced secondary wastewater treatment systems.

AES Installations

Installing AES

Environment Technology provides an Installation Manual and other information for AES Installers. Also watch our videos.

Large Scale AES Systems

Large Scale

AES scales to treat wastewater from tiny homes to towns and large subdivisions. Can handle fluctuating loads, e.g. maraes or campgrounds.

UV Disinfection

UV Disinfection

The Salcor UV disinfection unit is specifically designed for disinfecting the effluent from aerobic treatment plants.

System Sand for AES beds


The AES system sand is a coarse filter sand, closely aligned with C33 sand specifications. We can test sand samples for compliance.

Buy septic products online

Septic Products Shop

Plumbers and drainlayers can purchase a range of septic products in the Environment Technology online shop.

AES Wastewater Treatment Video 1

AES Wastewater Treatment Video 2