| Indexes | ||
Vulnerability classes | Vulnerability related to PEM availability | Vulnerability related to Water for uses | Vulnerability related to PEM water quality. |
Low or zero | ≤ 300 | ≥ 100% | ≤ 25% |
Medium | 300 < ≤ 600 | 75% < ≤ 100% | 25% < ≤ 50% |
High | 600 < ≤ 900 | 50%< ≤ 75% | 50% < ≤ 75% |
Very high | ≥ 901 | ≤ 50% | > 75% |