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

Table 12

Risk results of multilevel fuzzy comprehensive evaluation of the samples in case study.

Sample no.	Risk factors							Evaluation results					Final results
	D	R	A	S	T	I	C	𝑉1	𝑉2	𝑉3	𝑉4	𝑉5	Principle 1	Principle 2
1	61	170.2	5	2	3	9	4.92	0.3823	0.0067	0.3229	0.1917	0.0964	𝑉1	1.0897×10^−4
2	12	64.3	7	3	6	9	1.64	0.1019	0.2530	0.4334	0.1444	0.0672	𝑉3	1.4109×10^−4
3	8	45.7	3	10	4	5	24.6	0.0912	0.1319	0.4797	0.2364	0.0608	𝑉3	1.5218×10^−4
4	16	85.1	3	6	2	7	13.2	0.0354	0.5305	0.2206	0.1820	0.0315	𝑉2	1.3219×10^−4
5	55	128.3	6	1	7	5	0.41	0.3890	0.0209	0.3203	0.2025	0.0672	𝑉1	1.2689×10^−4