Risk Assessment of Groundwater Contamination: A Multilevel Fuzzy Comprehensive Evaluation Approach Based on DRASTIC Model

Table 4

Pairwise comparison matrix of 𝑈₂ based on 0–2 scale.

Factor	D	R	T	C	Order index
D	1	2	2	2	7
R	0	1	2	2	5
T	0	0	1	0	1
C	0	0	2	1	3