Installing on-site sewerage facilities

On-site sewerage facilities treat domestic sewage in unsewered areas. The facility can treat, store and dispose of sewage generated on the premises. A facility may include either:

  • an on-site sewage treatment plant, which uses mechanical, biological and filtration methods to treat waste before discharging through either above- or below-ground irrigation systems
  • a septic system, which uses biological methods to treat waste before discharging through a below-ground system
  • dry-vault toilets that are chemical, composting or incinerating toilets.

Approvals for on-site sewerage facilities

Installing an on-site sewage treatment plant requires:

If homeowners don't have approval, the system can't be installed in Queensland.

Check the Queensland Plumbing and Wastewater Code (PDF, 1.1MB) and Australian Standard AS1546.3:2017 for details on the performance requirements and criteria used to assess on-site sewage treatment and greywater treatment facilities.

Who issues approvals?

The Department of Housing and Public Works issues chief executive approvals for on-site sewage treatment plants to treat sewage from fewer than 21 equivalent persons.

The Department of Environment and Science issues approval for systems treating sewage from 21 equivalent persons or more.

Composting toilets

Composting toilets use a process of biological degradation to convert nightsoil into a humus-like substance through the aerobic action of micro-organisms and invertebrates.

New composting toilet installations presented for sale in Queensland must comply with Part F1.4 Composting, chemical and incinerating toilets of the Queensland Plumbing and Wastewater Code (PDF, 1MB).

Consumers who purchase a composting toilet must request a written statement of compliance from the manufacturer or distributor. Submit this statement to the local government with the approval application. We won't accept composting toilets previously approved by Queensland Health or the Environmental Protection Agency as evidence of compliance.

Pre-approved systems

The Department of Housing and Public Works has already approved wastewater treatment systems for varying qualities of effluent. Find out more about these qualities and their approved systems below:

Secondary quality

Compliance characteristics of secondary quality effluent:

  • 90% of the samples taken over the test period have a BOD5 less than or equal to 20g/m3, with no sample greater than 30g/m3.
  • 90% of the samples taken over the test period have total suspended solids less than or equal to 30g/m3, with no sample greater than 45g/m3.
  • Where disinfection is provided, 90% of the samples taken over the test period have thermotolerant coliform count not exceeding 200 organisms per 100ml, with no sample exceeding 1,000 organisms per 100ml.
  • Where chlorination is the disinfection process, the total chlorine concentration is 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
AWTS/Envirocycle (Qld) Pty Ltd Envirocycle Model Mark 6 Department of Primary Industries Approved: 1987
AWTS/Envirocycle (Qld) Pty Ltd Envirocycle Model 14 Department of Primary Industries Approved: 1994
AWTS/Envirocycle (Qld) Pty Ltd Envirocycle 4,000L Primary Treatment Tank Department of Natural Resources and Mines Approved: 1993
AWTS/Envirocycle (Qld) Pty Ltd Envirocycle 10–20 Person Commercial Department of Natural Resources and Mines Approved: 1992
AWTS/Envirocycle (Qld) Pty Ltd Envirocycle Model 12Q Department of Natural Resources and Mines Approved: 1990
B.V. Hawthorne Pty Ltd (trading as Ecosafe Wastewater Treatment) Ecosafe Aerobic Sand Filter Chief executive approval 05/2016 (PDF, 449KB) 26 Apr 2021
Biolytix Ltd Biolytix BF6 Mark 2 Chief executive approval 01/2016 (PDF, 328KB) 18 Feb 2021
Bioseptic Pty Ltd Bioseptic Performa 2000 Chief executive approval 07/2015 (PDF, 334KB) 10 Apr 2020
Chankar Environmental Pty Ltd Advanced Enviro-Septic (AES 38) Chief executive approval 27/2015 (PDF, 537KB) 8 Nov 2020
Eloy Water Australia Oxyfix C-90 10PE - No Disinfection Chief executive approval 15/2016 (PDF, 798KB) 20 Dec 2021
Everhard Industries Pty Ltd Aqua-Nova models 80100, 80110 and 80114 Chief executive approval 12/2015 (PDF, 292KB) 6 May 2020
Everhard Industries Pty Ltd Aqua-Nova model 10114 Chief executive approval 10/2015 (PDF, 227KB) 19 Apr 2020
Everhard Industries Pty Ltd Aqua-Nova model 80203 Chief executive approval 15/2015 (PDF, 220KB) 19 Apr 2020
Everhard Industries Pty Ltd Aqua-Nova model 10100 Chief executive approval 13/2015 (PDF, 246KB) 19 Apr 2020
Graf Australia Pty Ltd Graf Klaro Epro15 Chief executive approval 21/2015 (PDF, 338KB) 12 Aug 2020
Houston Services Pty Ltd WWR-Mark IV Chief executive approval 12/2016 (PDF, 6MB) 19 Oct 2021
JOWA Group Pty Ltd (trading as Biocycle) Biocyle 4,700L Dept Primary Industries approval 18/2006 (PDF, 153KB) Approved: 1993
JOWA Group Pty Ltd (trading as Biocycle) Biocyle 6,000L 6,000L Dept Natural Resources and Mines approval dated 02/1985 (PDF, 357KB) Approved: 1987
JOWA Group Pty Ltd (trading as Biocycle) Biocyle 'Hunter' 5100 Hunter 5,100L Dept Natural Resources approval dated 01/1990 (PDF, 252KB) Approved: 1991
JOWA Group Pty Ltd (trading as Biocycle) Biocyle 10—20 person Biocycle 10–20 EP approval dated 01/1991 (PDF, 172KB) Approved: 1991
JOWA Group Pty Ltd (trading as Biocycle) Biocyle 4550 S.P. Conversio Biocycle 4550 S.P. Dept Natural Resources and Mines approval date 07/2002 (PDF, 291KB) Approved: 1987
JOWA Group Pty Ltd (trading as Biocycle) Enviroseptic Model 10 Model 10 approved dated 06/1995 (PDF, 372KB) Approved: 1995
JOWA Group Pty Ltd (trading as Biocycle) Enviroseptic Model 114 Model 114 approval dated 06/1995 (PDF, 400KB) Approved: 1995
Kingspan Water & Energy Pty Ltd BioFicient Series 1 Chief executive approval 01/2019 (PDF, 10.3MB) 19 Feb 2024
Nature Flow Systems Pty Ltd Nature Flow MK II STP Chief executive approval 26/2015 (PDF, 1.03MB) 20 Jan 2021
Quality Tanks Pty Ltd Krystel Kleer CD 100 Chief executive approval 03/2015 (PDF, 476KB) 19 Mar 2020
Rotomoulding Pty Ltd UBI Aqua 6000 Chief executive approval 05/2017 (PDF, 1.18MB) 26 Jul 2022
Rainflow Stormwater Solution P/L GM 7100 Elite Chief executive approval 07/2016 (PDF, 221KB) 11 May 2021
Suncoast Waste Water Management Ozzi Kleen RP10 Chief executive approval 02/2016 (PDF, 311KB) 15 Apr 2021
Taylex Industries Pty Ltd Clearwater 90 Deluxe Chief executive approval 11/2016 (PDF, 468KB) 22 Sep 2021

Advanced secondary

Compliance characteristics of advanced secondary quality effluent:

  • 90% of the samples taken over the test period 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 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 have thermotolerant coliform count not exceeding 10 organisms per 100ml with no sample exceeding 200 organisms per 100ml.
  • Where chlorination is the disinfection process, the total chlorine concentration is 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 Jan 2021
B.V. Hawthorne Pty Ltd (trading as Ecosafe Wastewater Treatment) Ecosafe Advanced Secondary Wastewater Treatment Plant 10–20 EP Chief executive approval 06/2016 (PDF, 509KB) 25 Aug 2021
Chankar Environmental Pty Ltd Advanced Enviro-Septic (AES) Chief executive approval 14/2014 (PDF, 407KB) 19 Dec 2019
Eco Water Pty Ltd Earthsafe D10 S/C model Treatment plant approval 03/2019 (PDF, 930KB) 1 Jan 2024
Eco Water Pty Ltd Earthsafe D10 S/F model Treatment plant approval 05/2019 (PDF, 997KB) 1 Jan 2024
Eloy Water Australia Oxyfix C-90 – Chlorine Model Treatment plant approval 09/2019 (PDF, 1.1MB) 1 Jan 2024
Eloy Water Australia Oxyfix C-90 – UV Model Treatment plant approval 10/2019 (PDF, 1.2MB) 1 Jan 2024
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 Dec 2019
Everhard Industries Pty Ltd Aqua Nova MBR 10 Chief executive approval 04/2015 (PDF, 270KB) 19 Mar 2020
Everhard Industries Pty Ltd Aqua-Nova 80203Z Chief executive approval 08/2015 (PDF, 396KB) 19 Apr 2020
Everhard Industries Pty Ltd Aqua-Nova models 80100Z, 80110Z and 80114Z Chief executive approval 11/2015 (PDF, 293KB) 26 Apr 2020
Everhard Industries Pty Ltd Aqua-Nova model 10114Z Chief executive approval 09/2015 (PDF, 377KB) 19 Apr 2020
Everhard Industries Pty Ltd Aqua-Nova model 10100Z Chief executive approval 14/2015 (PDF, 285KB) 6 May 2020
Fuji Clean Australia CE 1500EX model Treatment Plant approval 01/2015 (PDF, 1.4MB) 1 Jan 2024
Magnesium Tech Pty Ltd Waterboy model Chief executive approval 24/2015 (PDF, 369KB) 1 Jul 2020
Quality Tanks Pty Ltd Krystel Kleer Model ADV 5000 Chief executive approval 18/2015 (PDF, 264KB) 6 May 2020
Quality Tanks Pty Ltd Krystel Kleer Model Poly ADV 5000 Chief executive approval 19/2015 (PDF, 393KB) 6 May 2020
Sayer Civil Pty Ltd Aerobic Sand Filtration (HTSP) Chief executive approval 01/2018 (PDF, 1.4MB) 2 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, 385KB) 26 Apr 2020
Taylex Industries Ptd Ltd Taylex ABS with Chlorine 13 EP Chief executive approval 17/2015 (PDF, 385KB) 26 Apr 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 Jan 2024

Advanced secondary with nutrient removal

Compliance characteristics of advanced secondary quality effluent with nutrient removal:

  • 90% of samples taken over the test period have a BOD5 less than or equal to 10g/m3 with no sample greater than 20g/m3 .
  • 90% of samples taken over the test period 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 a thermotolerant coliform count (not exceeding 10 organisms per 100ml with no sample exceeding 200 organisms per 100ml.
  • Where chlorination is the disinfection process, the total chlorine concentration is greater than or equal to 0.5g/m3 and less than 2.0g/m3 in 4 out of 5 samples taken.
  • 90% of the samples, with 95% confidence limits, taken over the test period have a total nitrogen concentration less than or equal to 10mg/l.
  • 90% of the samples, with 95% confidence limits, taken over the test period have a total phosphorus concentration less than or equal to 5mg/l.

Approved facilities

Company nameDescription Approval documents Expiry date
AWTS Maintenance Services Pty Ltd Envirocycle Model 10 NR Treatment plant approval 07/2019 (PDF, 906KB) 1 Jan 2024
Eco Water Pty Ltd Earthsafe D10 S/C model with nutrient reduction Treatment plant approval 04/2019 (PDF, 1.2MB) 1 Jan 2024
Eco Water Pty Ltd Earthsafe D10 S/F model with nutrient reduction Treatment plant approval 06/2019 (PDF, 1.28MB) 1 Jan 2024
Everhard Industries Pty Ltd AquaNova NR 8 EP advanced secondary wastewater treatment system Chief executive approval 05/2015 (PDF, 299KB) 19 Mar 2020
Magnesium Tech Pty Ltd Magnesium Domestic Membrane System
(DMS 15 EP)
Chief executive approval 25/2015 (PDF, 454KB) 10 Sep 2020
Suncoast Waste Water Management OzziKleen RP10A+ Chief executive approval 02/2017 (PDF, 3.5MB) 8 Feb 2021

Contact

General enquiries 13 QGOV (13 74 68)