Approved Primary Treatment Systems

The Health (Treatment of Sewage and Disposal of Effluent and Liquid Waste) Regulation 1974 requires all Primary Treatment Systems (PTSs) (also known as Septic Tanks) to be approved by the Chief Health Officer.

DOH now requires all manufacturers’ to comply with the Code of Practice for Product Approval of Onsite Wastewater Systems which requires all PTSs to be certified to AS/NZS 1546.1. This will ensure that the quality standards of all PTSs manufactured in WA are in line with the Australian Standards.

Please be aware that the minimum capacity of a PTS treating all wastes connected to a residential premises up to 5 bedrooms is 3180L. A single tank can be approved for residential installation only when it is fitted with a baffle as an approved product and has a capacity equal to or larger than 3180L.

A primary treatment system with a single baffled tank with a capacity less than 3180L can be approved for small commercial installations only when the wastewater volume combined with the 1820L reserve is less than the total system capacity and an engineering certificate is provided to confirm the integrity of the configuration.

The following tables detail the specifications of precast concrete septic tanks (Table 1) and non-concrete septic tanks (Table 2) approved for use in Western Australia.

Table 1: Approved precast concrete septic tanks

Business Location Manufacturer Approval Number Model Capacity (L)
Albany
PN & ER Newman's Quality Concrete Products (external site)
(08) 9842 2040
admin@newmansconcreteproducts.com.au

F-AA-31233

1720mm 3950
1500mm 2470
1200mm 1580
Albany/Perth/Margaret River   Taylex Industries Pty Ltd (external site)
1300 TAYLEX
info@taylex.com.au 
 F-AA-65001  SEP4000  3928
 SEP5000  5040
 SEP10000  9785
Maxi Tank  4753 
Australind
MJB Industries (external site)
(08) 9797 0999
sales@mjbindustries.com
F-AA-33612 1500mm 2067
1200mm 1323
Broome
Kimberley Septics
(08) 9192 5900 or 0439 879 392
janetteleach@westnet.com.au
#144
1500mm 1856
1200mm 1165
Bunbury
Filtrex Innovative Wastewater Solutions (external site)
(08) 9726 0118
admin@filtrex.com.au
F-AA-27609 Filtrex 3200L (baffle option)
3200
Filtrex 720L
720
Busselton
Busselton Cement Products (external site)
0403 208 621
admin@busseltoncementproducts.com.au
F-AA-31306 1800mm 3657
1500mm 2006
1200mm 1292
Busselton
LAB Concrete Products
(08) 9754 1111
#110
1520mm 1933
1220mm 1292
Cuballing
Cuballing Concrete and Contractors
(08) 9883 6333
0427 387 557
F-AA-31143 1520mm 1933
1220mm 1273
 Denmark

 Denmark Concrete PL
0466 101161
0427 482 921

#188 1520mm 1987
1220mm 1280
Hockley's Denmark Plumbing Service
(aka. Denmark Concrete Constructions)
(08) 98481210
#84 1520mm 1950
1220mm 1310
Dongara
Dongara Concrete Services
(08) 99271096
dongaraconcrete@wn.com.au
#85
1520mm 1942
1220mm 1251
Esperance
Concrete World
(08) 9071 1058
#161
1500mm 2077
1200mm 1329
Geraldton GNC Quality Precast (external site)
(08) 9923 3705
admin@gncconcrete.com.au
F-AA-30716 1800mm 2838
1500mm 2000
1200mm 1250
 Gingin / Breera  WANT Plumbing
0428 3540 09
wantplumbing@hotmail.com
#189 1500mm 1850
1200mm 1170
Harvey
UDUC Concrete Products
(08) 9729 3301
uducconcrete@bigpond.com

F-AA-33434

1500mm 1865
1200mm 1194
Maddington
Maddington Concrete Products (external site)
(08) 9459 1053
tony@maddingtonconcrete.com.au
F-AA-31116 1800mm (MCP S3)
3335
1800mm (MCP S4)
2571
1500mm (MCP S1)
1970
1200mm (MCP S2)
1269
Malaga
Regal Cement
(08) 9249 3322
sales@regalcement.com.au
#156
1500mm 2024
1200mm 1318
Manjimup
Manjimup Concrete Manufacturers
(08) 9777 1666
manjimupconcrete@westnet.com.au
F-AA-30590 1500mm 2010
1200mm 1265
Midland Midland Cement Materials (external site)
(08) 9449 0200
sales@mcm.com.au
F-AA-31142 1500mm 1891
 1200mm 1150 
 Moora Moora Concrete Works (external site)
(08) 9622 5876
hillscon@wn.com.au
F-AA-32688  1520mm 1933
 1220mm  1273
Northam
Hills Concrete Products (external site)
(08) 9622 5876
hillscon@wn.com.au
F-AA-30980 1520mm 1933
1220mm 1273
1800mm  3510 
Kununurra
Guerinoni & Son (external site)
(08) 9169 1411
customers@guerinoni.com.au
F-AA-33735 1570mm 2830
1335mm 1990
Kwinana
Naval Base Concrete
(08) 9439 3933
navalcon@iinet.net.au
F-AA-31114 1500mm 1943
1200mm 1244
Wangara Galvin Concrete & Sheetmetal Pty Ltd (external site)
(08) 9302 2175
#185 Maxi A 6280
1800mm 2800
1500mm 1942
1200mm 1243

Table 2: Approved non-concrete septic tanks

Manufacturer Model Capacity (L) AS Certification (Valid till)
 Coerco (external site)
Ph: 1800 646 277

Distributor in WA
DS Agencies (external site)
Ph: (08) 61436565
SEP-1450
Septic / Holding Tank
1450  SMK40330
(2 November 2024)

SEP-2200
Septic / Holding Tank
2200

SEP-3200
Septic / Holding Tank
(Baffle option)

3200 
SEP-3500
Septic / Holding Tank
3500
SEP-4000
Septic / Holding Tank
(Baffle option)
4000
SEP-7000
Holding Tank 
7000
SEP-11000
Septic / Holding Tank
11000
SEP-11000
Septic / Holding Tank

15000 
SEP-19000
Septic / Holding Tank
19000 
 SEP-23000
Septic / Holding Tank
23000 
 SEP-27000
Septic / Holding Tank
27000 
 SEP-31000
Septic / Holding Tank
31000 
 Everhard Industries Pty Ltd (external site)
Ph: (08) 9417 8222
Everhard 4000L Septic / Holding Tank 
(Baffle option)
4000 SMK01950
(2 June 2023)
Everhard 3000L Septic / Holding Tank 
(Baffle option)
3000
Everhard 2500L Holding Tank 2500
Everhard 1000L Pump Tank 1000
Everhard 250/450L Pump Tank
250/450
 Global Roto-Moulding (external site)
Ph: 1800 666 333
 GR-SP 3000
 3057 

SMK40297
(20 April 2025)



 GR-SP 4500
4500 
 GR-SP 5000
5000 
 GR-SP 6000
6000 
GRAF Plastics Australia Pty Ltd (external site)
info@grafaustralia.com.au
Ph: 1300 131 971

CARAT 2700
Septic / Holding Tank

2700 Global certification #183 (external site)
(26 April 2024)
CARAT 3750
Septic / Holding Tank
(Baffle option)
 3750

CARAT 4800
Septic / Holding Tank
(Baffle option)

4800

CARAT 6500
Septic / Holding Tank
(Baffle option)

 6500
 CARAT XL 8500
Septic / Holding Tank
8500 
 CARAT XL 10000
Septic / Holding Tank
10000 

Platin XL
Holding tanks 

10000 &15000

Platin XXL
Holding tanks 

20000, 25000 & 30000L

Platin 
Holding tanks 

 1500
3000 
  5000
 
Sapphire
Holding tanks 
600 
900
1200
1500 

Lilo
Holding tanks 

 1500
3000 
5000 

Rondus
Holding tanks 

3000 

Herkules
Holding tanks 

 1600

Columbus
Holding tanks 

6500 
Halgan Pty Ltd (external site)
info@halgan.com.au
Ph: 1800 626 753
HSEPS Septic Tanks 1000 Global-Mark
Certification #100896
(6 March 2025)
1500
2000
3000
4000
5000
Innotech Site Services Pty Ltd (external site)
Ph: (08) 9353 6688
IIS6000ST (baffled)
6070 Approved for commercial installations ONLY.
Reln Pty Ltd (external site)
Ph: 1300 137 356
3200L
Holding Tank
3200 AMI 1651
(14 November 2022)
3200L Deep Invert
Holding Tank
3200
3200L 2:1
Septic Tank (Baffled)
3200
3200L Deep Invert
Septic Tank
(Baffled)
3200
4000L
Holding Tank
4000
4000L 2:1
Septic Tank (Baffled)
4000
450/600L
Pump Tank
600
Sepron (external site)
sales@sepron.com.au
Ph: 1300 017 170
SEP-500 
Pump Tank
500  SMKH25655
(13 February 2024)
SEP-1000 
Pump Tank
1000 
SEP-1500  1500 
SEP-2200
(No baffle)
 2200
 Underslung holding tanks for prefabricated ablution blocks
Formit Services Pty Ltd (external site)
Ph: (02) 4336 1000
2000L Module 2000 Maximum use of 12 months. To be used with prefabricated ablution blocks only.
4000L Module 4000
6000L Module 6000
Coerco (external site)

Ph: 1800 646 277
ABWT1500 1500
ABWT2000
2000
ABWT3000
3000
ABWT4000
4000
ABWT4500
4500
ABWT6000
6000
ABWT8000
8000
WBE Engineering

Pigdon Portables Pty Ltd (external site)
Ph: (08) 9525 3801

Complete Site Services (external site)
Ph: (08) 9410 7113
WBE 028  4000 
Instant Products Group (external site)

Ph: (08) 9406 6600

 7148 4000
 7149 1500
 7150 2500
 7151 3400
7152  1150

More information

Environmental Health Directorate
Department of Health
Telephone: 9222 2000
Email: ehinfo@health.wa.gov.au

Last reviewed: 01-12-2020
Produced by

Environmental Health Directorate