| OPERATIONS TROUBLE CALLS ONLY (For All Areas, 24 hrs) |
Broken Mains, Leaks, Water Quality, Low Pressure | 270-7633 |
| CUSTOMER SERVICE | Start or Terminate Water Service, High Bills, Change of Address, Bill Payment & Delinquent Bill | 270-7730 |
| ADMINISTRATION | Director | 270-7816 |
| Deputy Director | 270-7834 | |
| Information | 270-8046 | |
| THE BOARD OF WATER SUPPLY | 270-7304 | |
| ACCOUNTING | 270-7781 | |
| ENGINEERING | 270-7835 | |
| INSPECTORS | 244-8553 | |
| PERSONNEL | 270-7305 | |
| PURCHASING | 270-7301 | |
| WATER RESOURCES / PLANNING / CONSERVATION | 244-8550 | |
| FIELD OPERATIONS | Kahului | 270-7633 |
| Hana | 248-8455 | |
| Lahaina | 661-4141 | |
| Molokai | 553-3531 | |
| PLANT OPERATIONS | Kahului Office | 270-7551 |
| Backflow | 244-8545 | |
| Plant Maintenance | 270-7552 | |
| Water Quality Laboratory | 270-7550 | |
| WATER TREATMENT PLANT OPERATIONS | Kahului | 270-7380 |
| Water Treatment Facilities | Kamole Weir | 579-8814 |
| Mahinahina | 669-3878 | |
| Piiholo | 579-9438 | |
| Olinda (Upper Kula) | 572-6136 | |
| Lahaina | 667-4349 | |
| MAILING ADDRESS | Department of Water Supply, 200 South High Street, Wailuku, HI 96793-2155 | |