| Business | Phone |
| Detroit Lake Treatment Plant Long Lake Rd, Detroit Lakes 56501 | (218) 847-8588 |
| Detroit Lake Waste Water Plant 1036 Willow St W, Detroit Lakes 56501 | (218) 847-8588 |
| Detroit Lakes City Beach W Lake Dr, Detroit Lakes 56501 | (218) 846-7115 |
| Detroit Lakes City Engineer 1115 W River Rd, Detroit Lakes 56501 | (218) 847-5607 |
| Detroit Lakes City Of Fire Sta 417 Main St W, Detroit Lakes 56501 | (218) 844-7665 |
| Detroit Lakes City Supt Office 1025 Roosevelt Ave, Detroit Lakes 56501 | (218) 847-7609 |
| Detroit Lakes Jet Turbine Room 1025 Roosevelt Ave, Detroit Lakes 56501 | (218) 846-3227 |
| Detroit Lakes Sports Arena 1310 Rossman Ave, Detroit Lakes 56501 | (218) 846-7105 |
| Detroit Lakes Wastewater Supv 1044 Willow St W, Detroit Lakes 56501 | (218) 846-7102 |
| Detroit Lakes Water Plant 1240 Rossman Ave, Detroit Lakes 56501 | (218) 846-7101 |
| Lakes Net 1025 Roosevelt Ave, Detroit Lakes 56501 | (218) 846-1937 |
| Street Commissioner 508 Front St E, Detroit Lakes 56501 | (218) 847-4637 |