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. Author manuscript; available in PMC: 2016 Jan 31.
Published in final edited form as: Sci Total Environ. 2014 May 26;505:1274–1281. doi: 10.1016/j.scitotenv.2014.05.017

Table 2.

Demographic Characteristics of Survey Respondents (N=525) and Population in 13 towns of Kennebec County, Maine, in 2013 and 2010, respectively.

Demographic Characteristic Sample (N=525) Populationa
Median Age (years)b 55 50
Sex Ratio (M/F) 54% / 46% 49.4% / 50.6%
Homeownership (%Owners/%Renters) 92.5% / 7.5%c 85% / 14.4%
Median education Technical/Community Colleged Associate’s degree
Median income $40,000 – 59,000e $54,883
Households with children <18 Years Old 28.1% 31.7%
b

Survey respondents were required to be at least 18 years old; for population median age is only of those 18.≥25th and 75th percentile ages for sample are 47 and 65, respectively.

c

Rental units are more prevalent within the bounds of public water supply systems than private well households

d

25th and 75th percentile education levels for sample are high school/GED and bachelor’s degree, respectively.

e

18% of respondents chose not to report income. 25th and 75th percentile income levels for sample are $20,000–39,000 and $60,000–79,000, respectively.