Evaluation criteria for maintenance management systems
| Evaluation . | Number of technical staff per length of distribution pipe . | Percentage of water leaks repaired . |
|---|---|---|
| Rate of change (%) . | Rate of change (%) . | |
| Upward | ≥5.0 | ≥80.0 |
| Flat | −5.0 ± 5.0 | 20.0–80.0 |
| Downward | <− 5.0 | <20.0 |
| Evaluation . | Number of technical staff per length of distribution pipe . | Percentage of water leaks repaired . |
|---|---|---|
| Rate of change (%) . | Rate of change (%) . | |
| Upward | ≥5.0 | ≥80.0 |
| Flat | −5.0 ± 5.0 | 20.0–80.0 |
| Downward | <− 5.0 | <20.0 |