Household demand and supply for clean groundwater in the Mekong Delta, Vietnam

Sustainable Energy Research

Table 1 Descriptive statistics of water actors

Characteristic	Mean	Min.	Max.	S.D.
Non-GSU users
Age (in years)	48	17	82	13.5
Education level^a	3	1	5	0.86
Number of years of residence	32	1	79	16.65
Number of family members	5	1	12	1.87
Income per month (million VND)	3.27	0.25	25.0	3.72
GSU users
Age (in years)	45	17	86	14.8
Education level^a	3	1	5	0.81
Number of years of residence	31	1	85	17.14
Number of family members	5	1	12	1.62
Income per month (million VND)	2.28	0.25	14.0	1.75
GSU managers
Age (in years)	43	19	69	12.55
Education level^a	3	2	5	0.77
Designed capacity (number of households)	157	90	450	65.67
Number of years GSU established (up to 2006)	3	1	7	1.71

Note: ^a1, 2, 3, 4, and 5 stand for illiterate, primary level (1 to 5 years), secondary level (6 to 9 years), high school (10 to 12 years), and tertiary level (>12 years), respectively.