| Business | Phone |
| Billings Public Utilities Dept 2251 Belknap Ave, Billings 59101 | (406) 657-8323 |
| Public Utilities-Bill Cmplnts 2251 Belknap Ave, Billings 59101 | (406) 657-8317 |
| Public Utilities-Meter Shop 2251 Belknap Ave, Billings 59101 | (406) 657-8331 |
| Public Utilities-Systems Div 2251 Belknap Ave, Billings 59101 | (406) 657-8307 |
| Public Utilities-Water Plant 2251 Belknap Ave, Billings 59101 | (406) 657-8353 |
| Public Utilities-Water Turn On 2251 Belknap Ave, Billings 59101 | (406) 657-8318 |