| Business | Phone |
| Hazel Green Water Dept 1610 Fairplay St, Hazel Green 53811 | (608) 854-2953 |
| Hazel Green Waste Water Plant Crawford Ln, Hazel Green 53811 | (608) 854-2620 |
| Hazel Green Water Plant 2410 14th, Hazel Green 53811 | (608) 854-2202 |
| Township Garage 3910 N Percival St, Hazel Green 53811 | (608) 854-2235 |