Loodgieters Groningen
| Plaats | Loodgieters- en installatiebedrijven |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 3 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 22 | |
| 1 | |
| 3 | |
| 3 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 4 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 2 | |
| 3 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 4 | |
| 3 | |
| 3 | |
| 1 |
| Plaats | Loodgieters- en installatiebedrijven |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 3 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 22 | |
| 1 | |
| 3 | |
| 3 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 4 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 1 | |
| 2 | |
| 3 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 1 | |
| 1 | |
| 1 | |
| 2 | |
| 2 | |
| 4 | |
| 3 | |
| 3 | |
| 1 |