| 1 | Public Works Department | #2503 | |
| 2 | Civil Engineering Section | #2605、#2606 | 376440000a1321@hchg.gov.tw |
| 3 | Maintenance Section | #2560、#2572 | 376440000a1322@hchg.gov.tw |
| 4 | Sewage Section | #2623、#2628 | 376440000a1323@hchg.gov.tw |
| 5 | Engineering Section | #2650、#2657 | 376440000a1326@hchg.gov.tw |
| 6 | Water Resources Section | #6316、#6320 | 376440000a1328@hchg.gov.tw |
| 7 | Construction Section | #2590、#2585 | 376440000a1329@hchg.gov.tw |