| # | Entity | Status | State |
|---|---|---|---|
| 1 | 18 666 366 267 HYDROCON PLUMBING AND EARTHWORKS PTY LTD |
ABN Active | NSW 2622 |
| 2 | 37 164 572 945 HYDROCON AUSTRALASIA PTY LTD |
ABN Active | NSW 2017 |
| 3 | 86 600 135 162 HYDROCON SERVICES PTY LTD |
ABN Active | NSW 2280 |
| 4 | 95 126 914 216 Hydrocon Pty Ltd |
ABN Cancelled | WA 6401 |
| 5 | 98 003 175 362 HYDROCON AUSTRALIA PTY LTD |
ABN Cancelled | NSW 2008 |
| 6 | 73 214 064 210 NORMAN JAMES WALSH Hydrocon Civil |
ABN Active | NSW 2127 |
| 7 | 98 003 175 362 HYDROCON AUSTRALIA PTY LTD HYDROCON AUSTRALASIA PTY LTD |
ABN Cancelled | NSW 2008 |