Environment Technology (ET) is the NZ-wide distributor of AES (Advanced Enviro-Septic™) - the long-term, low-cost answer for onsite wastewater treatment systems. AES is installed after a standard septic tank in a bed of 'system sand' and passively purifies wastewater to Advanced Secondary standards. The system can be retro-fitted and can be configured from municipal installations to residential homes. Over 400,000 installed worldwide. 99% performance with no issues. More than 250 in New Zealand... Read more