Drinking Water Quality

Drinking Water Quality

Drinking water quality is determined by Safe Drinking Water Act violation points per 1,000 residents served in 2017, according to the Environmental Protection Agency. TN ranks 3rd.

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Low Industrial Toxins

Low Industrial Toxins

This metric evaluates total toxic chemical pollution generated in a state, measured per square mile of land area. It considers emissions to air and water from manufacturing, mining, electric power generation and hazardous waste treatment. Not included are pollution from agriculture, transportation and small facilities such as dry cleaners and autobody shops. TN ranks 36th.

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Low Pollution Health Risk

Low Pollution Health Risk

Low pollution is the health risk of pollution per capita. The risk score measures long-term, chronic human health effects of toxic chemical pollution, such as birth defects and cancer. This measure encapsulates the impact of pollution from manufacturing, mining, electric power generation and hazardous waste treatment. Like with the industrial toxins, this measure does not include pollution from agriculture, transportation and facilities such as dry cleaners and autobody shops. TN ranks 31st.

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Urban Air Quality

Urban Air Quality

Urban air quality is measured by the average number of days with the Environmental Protection Agency's Air Quality Index above what is deemed a "healthy" threshold; the results are weighted to account for state population. TN ranks 29th.

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