| Business | Phone |
| Buettner Electric 4560 Fountain Brook Dr, Waterloo 62298 | (618) 939-3620 |
| Design Electric 6076 Maeystown Rd, Waterloo 62298 | (618) 939-8240 |
| Don's Electric Contracting 404 W 3rd St, Waterloo 62298 | (618) 939-7814 |
| Dreps Electric 12 Victor St, Waterloo 62298 | (618) 939-6913 |