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Skip Navigation LinksDepartment of Housing and Public Works > Construction > Building and plumbing > Plumbing and drainage > On-site sewage facilities > Approved systems > Advanced secondary

Advanced secondary

Advanced secondary quality effluent has these compliance characteristics:

  • 90% of the samples taken over the test period shall have a BOD5 less than or equal to 10g/m3 with no sample greater than 20g/m3.
  • 90% of the samples taken over the test period shall have total suspended solids less than or equal to 10g/m3 with no sample greater than 20g/m3.
  • Where disinfection is provided, 90% of the samples taken over the test period shall have thermotolerant coliform count (determined by either the most probable number of membrane filter technique) not exceeding 10 organisms per 100ml with no sample exceeding 200 organisms per 100ml.
  • Where chlorination is the disinfection process, the total chlorine concentration shall be greater than or equal to 0.5g/m3 and less than 2.0g/m3 in 4 out of 5 samples taken.

Approved facilities

Company name Approved facilities Approval documents Expiry date

B.V. Hawthorne Pty Ltd (trading as Ecosafe Wastewater Treatment)




Ecosafe Crown Waste Water Treatment Plant 10 EP Gravity and Pressure System Chief executive approval 01/2017 (PDF, 1MB) 23 January 2021
Ecosafe Advanced Secondary Wastewater Treatment Plant 10-20 EP Chief executive approval 06/2016 (PDF, 2.46MB) 25 August 2021
Chankar Environmental Pty Ltd Advanced Enviro-Septic (AES)

Chief executive approval 14/2014 (PDF, 286KB) 

19 December 2019
Eco Water Pty Ltd Earthsafe D10 S/C model Treatment plant approval 03/2019 (PDF, 930KB) 01 January 2024
Earthsafe D10 S/F model Treatment plant approval 05/2019 (PDF, 1MB) 01 January 2024
Eloy Water Australia Oxyfix C-90 - Chlorine Model Chief executive approval 13/2016 (PDF, 719KB) 17 November 2021
Oxyfix C-90 - UV Model Chief executive approval 14/2016 (PDF, 726KB) 17 November 2021
Envirotech IP Pty Ltd ATF Envirotech IP Trust Envirotech A.S.F. Generation II Chief executive approval 13/2014 amendment No. 1 (PDF, 331KB) 16 December 2019
Everhard Industries Pty Ltd Aqua Nova MBR 10 Chief executive approval 04/2015 (PDF, 270KB) 19 March 2020
Aqua-Nova 80203Z Chief executive approval 08/2015 (PDF, 396KB)  19 April 2020
Aqua-Nova models 80100Z, 80110Z and 80114Z Chief executive approval 11/2015 (PDF, 381KB) 26 April 2020
Aqua-Nova model 10114Z Chief executive approval 09/2015 (PDF, 377KB) 19 April 2020
Aqua-Nova model 10100Z

Chief executive approval 14/2015 (PDF, 347KB)

6 May 2020
Fuji Clean Australia CE 1500EX model Chief executive approval 01/2015 (PDF, 607KB) 9 January 2020
Magnesium Tech Pty Ltd Waterboy model Chief executive approval 24/2015 (PDF, 369KB) 1 July 2020
Quality Tanks Pty Ltd Krystel Kleer Model ADV 5000

Chief executive approval 18/2015 (PDF, 320KB)

6 May 2020
Krystel Kleer Model Poly ADV 5000 Chief executive approval 19/2015 (PDF, 563KB)

6 May 2020

Sayer Civil Pty Ltd Aerobic Sand Filtration (HTSP) Chief executive approval 01/2018 (PDF, 1.4MB) 02 May 2023
Suncoast Waste Water Management Ozzi Kleen Model RP10A Chief executive approval 03/2016 (PDF, 183KB) 15 May 2021
Taylex Industries Ptd Ltd Taylex ABS with UV 13 EP Chief executive approval 16/2015 (PDF, 379KB) 26 April 2020
Taylex ABS with Chlorine 13 EP Chief executive approval 17/2015 (PDF, 379KB) 26 April 2020
Toowoomba Tanks and Super-Treat Systems (Qld) Pty Ltd  Super-Treat Model IT-AST Advanced Secondary Quality Wastewater Treatment System Treatment plant approval (PDF, 786KB)  1 January 2024

More information

See on-site sewerage or contact Building Codes Queensland for more information.


Last updated 30 August 2019    Creative Commons Attribution 4.0 International (CC BY 4.0)

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