Review Article
A Review of On-Site Wastewater Treatment Systems in Western Australia from 1997 to 2011
Table 3
Type of OWTS approved by LG periods 1997–2011.
| Number | Location | System type | Year | Total | Total per LG | 97 | 98 | 99 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| 1 | Armadale | Septic tank | 62 | 29 | 102 | 104 | 103 | 56 | 55 | 55 | 32 | 48 | 94 | 60 | 114 | 101 | 97 | 1112 | 1377 | ATU | 125 | 24 | 16 | 9 | 21 | 23 | 22 | 24 | 264 | Composting toilet | | | | | | | | | | | | | | 1 | | 1 |
| 2 | Ashburton | Septic tank | | | | | | | | | | | | | 1 | 10 | 10 | 21 | 72 | ATU | | | | | | | | | | | | | 3 | 10 | 23 | 36 | Composting toilet | | | | | | | | | | | | | | | 1 | 1 | Others (holding tanks) | | | | | | | | | | | | | 2 | 4 | 8 | 24 |
| 3 | Belmont | ATU | | | | 1 | | | | | | 1 | | | | | | 2 | | Others | | | | | | | | | 1 | | | 2 | 1 | | | 4 |
| 4 | Chittering | Septic tank | 5 | 55 | 64 | 48 | 41 | 48 | 58 | 72 | 53 | 71 | 68 | 46 | 45 | 46 | 51 | 771 | 1164 | ATU | 3 | 8 | 10 | 7 | | 3 | 6 | 9 | 7 | 9 | 8 | 13 | 23 | 31 | 20 | 157 | Composting toilet | 2 | | | 2 | 3 | | 2 | | | 3 | 1 | | | | | 13 | Others | | 3 | 6 | 9 | 7 | 5 | 17 | 13 | 24 | 34 | 23 | 25 | 24 | 21 | 12 | 223 |
| 5 | Cockburn | Septic tank | | 29 | 28 | 33 | 40 | 50 | 55 | 60 | 22 | 25 | 20 | 28 | 16 | 16 | 8 | 430 | 446 | ATU | 1 | 4 | 4 | 1 | 1 | 3 | | 2 | | | | | | | | 16 |
| 6 | Cue | Septic tank | | | | | | | | | | | | 1 | 5 | 3 | 1 | 10 | 10 |
| 7 | Dalwallinu | Septic tank | | | | | | | | | | | | 1 | 3 | 2 | 1 | 7 | 11 | ATU | | | | | | | | | | | | 2 | 1 | 1 | | 4 |
| 8 | Dandaragan | Septic tank | | | 27 | 47 | 31 | 36 | 34 | 44 | 64 | 41 | 33 | 38 | 19 | 16 | 13 | 443 | 447 | ATU | | | | | | | | | | | | 4 | | | | 4 |
| 9 | Dardanup | Septic tank | | | | | | | | | | | | | 8 | 12 | 13 | 33 | 35 | ATU | | | | | | | | | | | | | | 1 | 1 | 2 |
| 10 | Derby | Systems not specified | 24 | 11 | 3 | 14 | 10 | 6 | 6 | 8 | 6 | 12 | 18 | 20 | 13 | 11 | 39 | 201 | 201 |
| 11 | Donnybrook-Balingup | Septic tank | | | | | | | | | | | 42 | 53 | 50 | 51 | 59 | 255 | 264 | ATU | | | | | | | | | | | 1 | 0 | 4 | 3 | 1 | 9 |
| 12 | East Fremantle | Greywater system | | | | | | | | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 | 8 |
| 13 | Esperance | Septic tank | | | | 77 | | | | | | | 25 | 56 | 40 | 39 | 26 | 263 | 741 | ATU | | | | 1 | | | | | | | 2 | 9 | 6 | 3 | 1 | 22 | Systems not specified | 106 | 79 | | | 50 | 43 | 35 | 46 | 37 | 60 | | | | | | 456 |
| | | Septic tank | 7 | 7 | 6 | 4 | 2 | 2 | 2 | 2 | 1 | | | | | 1 | 1 | 35 | | 14 | Fremantle | ATU | | | | | | | 1 | 1 | | | 1 | | | 1 | 1 | 5 | 95 | | | Others | | | | | | | 1 | | 3 | 2 | 13 | 7 | 14 | 8 | 7 | 55 | |
| 15 | Gosnells | Septic tank | | | | | | | | | | 12 | 12 | 17 | 19 | 20 | 19 | 99 | 119 | ATU | | | | | | | | | | 2 | 2 | 4 | 1 | 1 | 3 | 13 | Composting toilet | | | | | | | | | | | 1 | | | | | 1 | Others | | | | | | | | | | 2 | 3 | 1 | | | | 6 |
| 16 | Joondalup | Septic tank | 14 | 29 | 22 | 17 | 15 | 22 | 12 | 9 | 1 | 2 | 2 | 1 | 1 | | 1 | 148 | 148 |
| | | Septic tank | 77 | 74 | 91 | 73 | 76 | 75 | 66 | 66 | 71 | 70 | 64 | 44 | 45 | 60 | 51 | 1003 | | 17 | Kalamunda | ATU | 28 | 24 | 23 | 11 | 14 | 13 | 5 | 15 | 18 | 18 | 27 | 19 | 27 | 28 | 20 | 290 | 1321 | Composting toilet | | | | | | | | | 1 | | 1 | | 1 | | | 3 | | | Others | | 3 | 1 | | | 1 | | 1 | 1 | 3 | 7 | 2 | 2 | 3 | 1 | 25 | |
| 18 | Manjimup | Septic tank | 22 | 68 | 63 | 49 | 33 | 38 | 35 | 26 | 48 | 47 | 42 | 48 | 56 | 42 | 29 | 646 | 665 | ATU | | 1 | | | 2 | | | | 1 | | 1 | 4 | 3 | 2 | | 14 | Composting toilet | | | | | | 1 | | | | | | | | | 1 | 2 | Others | | | | | | | | | 1 | | | 2 | | | | 3 |
| 19 | Mundaring | Septic tank | 11 | 93 | 224 | 183 | 113 | 107 | 94 | 29 | 84 | 101 | 115 | 171 | 42 | 125 | 70 | 1562 | 1788 | ATU | 2 | 4 | 16 | 15 | 4 | 10 | 12 | 5 | 1 | 4 | 9 | 13 | 5 | 16 | 27 | 143 | Composting toilet | | | | | | 1 | | | | | | | | | | 1 | NRS | | 1 | | 2 | 2 | 8 | 6 | 1 | 3 | 6 | 6 | 6 | 1 | 1 | 2 | 45 | Greywater system | | | | | | 2 | | | 1 | 7 | 3 | 13 | 3 | 4 | 4 | 37 |
| 20 | Murchison | Septic tank | | | | | | | | | | | | 1 | | | | 1 | 1 |
| 21 | Murray | Septic tank | | | | | | | | | | 6 | 14 | 38 | 32 | 40 | 23 | 153 | 199 | ATU | | | | | | | | | | 7 | 10 | 10 | 4 | 6 | 9 | 46 |
| 22 | Nedlands | Septic tank | | | | | 1 | | 2 | | | 2 | 5 | 2 | 3 | 1 | 4 | 20 | 26 | ATU | | | | | | | | 1 | 1 | | 1 | | | 1 | | 4 | Others | | | | | | | | | | | | 1 | 1 | | | 2 |
| 23 | Northampton | Septic tank | | | | | | | | | | | | | 3 | 4 | 4 | 11 | 11 |
| 24 | Plantagenet | Septic tank | | | | 36 | 39 | 47 | 37 | 52 | 41 | 83 | 53 | 61 | 37 | 31 | 34 | 551 | 565 | ATU | | | | | | | | | 1 | 4 | 1 | 5 | | | 1 | 12 | Composting toilet | | | | | | | | | | | | 1 | | | | 1 | Others | | | | | | | | | | 1 | | | | | | 1 |
| 25 | Port Hedland | Septic tank | | | | | | | | | | | 8 | 3 | 2 | 1 | 3 | 17 | 29 | ATU | | | | | | | | | | | | 1 | | 1 | 4 | 6 | Treatment plant | | | | | | | | | | | 1 | 1 | | | 3 | 5 | Others | | | | | | | | | | | | | | | 1 | 1 |
| 26 | Serpentine-Jarrahdale | Septic tank | | | | | | | 72 | 149 | 48 | 30 | 25 | 16 | 26 | 15 | 47 | 428 | 1189 | ATU | | | | | | | 24 | 77 | 135 | 88 | 105 | 90 | 55 | 112 | 75 | 761 |
| 27 | Stirling | Septic tank | 31 | 38 | 48 | 28 | 21 | 21 | 12 | 3 | 7 | 1 | 1 | 1 | 2 | | 1 | 215 | 227 | ATU | | 1 | 5 | 1 | | | | | 1 | | | | | 1 | 2 | 11 | Others | | | | | | | | | | | | | | | 1 | 1 |
| 28 | Wanneroo | Septic tank | 93 | 124 | 107 | 96 | 103 | 128 | 133 | 120 | 84 | 77 | 70 | 67 | 46 | 52 | 60 | 1360 | 1377 | ATU | | | | | | | | | | | | 2 | | 1 | 2 | 5 | Others (Ecomax) | | | | | | | | 1 | 1 | 2 | | 1 | | 3 | 4 | 12 |
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