| Water Service Provider | Water Interruptions | Interruptions other than Bill | Bill related interruptions | |
| 2012 | 2012 | Before 2004 | ||
| CHEMOSIT | 5.9 | 2.1 | 1.7 | 3.8 |
| KIWASCO | 4.3 | 4.3 | 4.9 | 0.6 |
| MIKUTRA | 5.9 | 2.5 | 2.3 | 3.4 |
| SNWSCO | 5.7 | 2.7 | 2.6 | 3.0 |
| MOGOMBET | 4.4 | 1.8 | 1.3 | 2.6 |
| BOYA | 4.9 | 2.2 | 2 | 2.7 |
| NYASARE | 6.8 | 2.8 | 2.3 | 4.0 |
| OVERALL MEAN | 4.9 | 2.4 | 2.1 | 2.5 |