About This Literature Summary

This summary of the literature on Environmental Conditions as a social determinant of health is a narrowly defined examination that is not intended to be exhaustive and may not address all dimensions of the issue. Please note: The terminology used in each summary is consistent with the respective references. For additional information on cross-cutting topics, please see the Quality of Housing literature summary.

Related Evidence-Based Resources (3)

Literature Summary

Environmental conditions, or the quality and state of the environment, are an inescapable part of daily life that can impact health. Environmental conditions such as water quality, air quality, and weather often vary among populations and geographic locations. While many conditions of the environment are naturally occurring, the quality and impacts of the environment are often affected by historical, economic, and sociopolitical factors.1—6 Certain populations may be more susceptible to poorer environmental conditions and associated health disparities, including communities of color, those with low incomes, those who are unhoused, older adults, pregnant women, and children.1,3,4,7 Many aspects of the environment are expected to fluctuate with climate change, which is characterized by rising temperatures and shifting weather patterns across the globe.8 As a result, climate change is expected to cause new and worsening public health challenges, especially among disadvantaged communities.3,7,8 

Water Quality 

Water is an essential part of the environment that is needed for drinking, bathing, and cleaning. Although the United States’ water supply is generally safe, water can be contaminated in a variety of ways, such as through certain agricultural practices, sewage leaks, or naturally occurring substances.9 Water can be contaminated with pathogens, which cause waterborne diseases, or chemicals, which cause other negative health issues.9 There are approximately 7.15 million cases of waterborne illnesses from pathogens alone in the United States each year.10   

Most people in the United States get their water from public water systems or private wells.11 The Safe Drinking Water Act (SDWA) was established in 1974 to regulate drinking water by setting national standards for over 90 contaminants.12 However, water quality can be affected by several natural, built, and sociopolitical factors, which can lead to health disparities.1,2 For example, location and size of the water source, city planning decisions, and the amount of resources dedicated to managing the water system can all influence a community’s water quality.1,2 These factors may be more likely to adversely affect certain communities. Several studies have found that communities with lower incomes and communities of color have a higher risk of exposure to water quality health violations and water contaminants, such as nitrates and arsenic.1,13—16 In addition, the SDWA does not regulate small, private wells, which may put some residents at an increased risk for water contamination if the wells are not properly managed.17,18 Rural residents are more likely to use private well water, which can have higher levels of nitrates.1 High levels of nitrate or arsenic exposure can cause nausea, vomiting, cardiovascular issues, and death.19,20 

Air Quality 

Air is another vital condition for life and health. However, air pollution is associated with an estimated 100,000 to 200,000 deaths annually in the United States.5 Air quality can be affected when air is contaminated by particle pollution, such as dust, smoke, or drops of liquid, and air pollutants, such as carbon monoxide, ozone, or nitrogen oxides.21These particles are commonly emitted into the air by motor vehicles, industrial facilities, and fires.22 Poor air quality is linked to many health problems, including lung cancer23and heart disease.24,25 Even naturally occurring particles, such as pollen, can circulate in the air and cause allergic reactions and respiratory issues that substantially impact the public health system.26,27

Certain communities are more susceptible to air pollution than others. Urban areas often have more pollution sources, which contributes to worse air quality when compared to rural areas.28 In addition, communities of color encounter air pollution more often than predominantly White communities due to historical, sociopolitical, and discriminatory factors.4-6 For example, neighborhoods of color are more likely to be located near pollution sources, such as factories and industrial facilities, as a result of discriminatory city planning and limited sociopolitical influence of residents.4,6 A national study of 215 United States Census tracts found that Hispanic individuals and non-Hispanic Black individuals were more exposed than non-Hispanic White individuals to airborne particulate matter, such as chlorine, aluminum, and elemental carbon.29 

Other Types of Environmental Conditions

Other community factors, such as noise levels and proximity to hazardous waste sites, can also influence health. Noise pollution often refers to the increased exposure of human-made noises, such as traffic, construction, or other mechanical sounds.30,31 Exposure to noise pollution may illicit stress responses and has been associated with hearing loss, among other health issues.30 Some studies found that noise pollution disproportionately affects communities of color and communities with lower incomes.31,32 In addition, living near hazardous waste sites, such as industrial facilities, municipal waste sites, or incinerators, is also associated with health concerns, including adverse pregnancy outcomes, childhood cancer, and other diseases.33,34 For example, one study found that adults living near a United States coal-burning power plant were more likely to report respiratory, gum, and skin conditions than adults not living near a power plant.35

Weather and Climate Change

Severe weather can have disastrous effects on health, including direct injury and death, in addition to causing infrastructure damage and environmental degradation. In 2020, weather-related events in the United States caused an estimated 457 fatalities, 1,425 injuries, and $27.3 million in total damages.36 In addition, people affected by weather disasters are at an increased risk of long-term effects, including mental health consequences and new or worsening chronic conditions.7 Severe weather also puts increased pressure on the health care system by increasing the number of people who require medical care, impeding access to care, and damaging health care infrastructure. For example, flooding may hinder transportation to health care facilities, and power outages may reduce the ability to provide services or close services completely.37 

Climate change is expected to increase the frequency and severity of weather events and shift weather patterns, which exacerbates issues in areas currently experiencing these conditions and creates new challenges for areas not accustomed to certain conditions.7 In addition to direct health effects from weather disasters, climate change also threatens health by reducing certain qualities of the environment. For example, warmer water temperatures and increased flooding facilitate the growth of waterborne pathogens, which increases risk of illness to people exposed through drinking water, fish and shellfish, or recreational water activities.7 Similarly, warmer temperatures and droughts can make crops and meat more susceptible to bacteria and toxins, which increases the risk of foodborne illness.7 Climate change and severe weather are likely to disproportionately affect people of color and people with lower incomes, often due to location, limited access to resources, and poorer-quality infrastructure.3,38 For example, urban communities that house people of color and people with lower incomes are more likely to have large amounts of heat-trapping surfaces, which puts these individuals at increased risk of severe heat.3,38,39 In addition, Hispanic or Latino persons are more likely to work jobs that expose them to weather, such as construction and agriculture, which puts them at higher risk for weather-related health consequences and reduced labor hours.38,40  

Strategies for Improvements

Environmental conditions can be improved through policies and programs that support monitoring, regulations, and investing in infrastructure. Federal laws, such as the Clean Air Act and Safe Drinking Water Act, that regulate air and water quality have been effective in reducing the harmful health effects of pollutants.41,42 Environmental conditions can also be improved through programs and initiatives that help communities enhance their infrastructure. For example, the Centers for Disease Control and Prevention’s Safe Water for Community Health program provides funding and resources to health departments to improve the quality of private wells.43 In addition, urban designs that promote increased vegetation on city streets and building roofs can help improve air quality, reduce noise pollution, and relieve excess heat.44 Some strategies and resources can also help residents improve the environmental conditions in their own homes. The Low Income Home Energy Assistance Program is a federal initiative that serves to reduce negative health outcomes from extreme temperatures by helping families cover their energy expenses.45 Residents can also use indoor air filters to improve their indoor air quality, which is especially beneficial in areas susceptible to wildfires.46 

While the relationship between health and some environmental conditions is well documented, additional research is needed to comprehensively assess the extent to which environmental conditions affect health and disparities. As environmental conditions continue to evolve, additional innovative and sustainable interventions are needed to address the effects of environmental conditions on health outcomes and disparities.

Citations

1.

Schaider, L. A., Swetschinski, L., Campbell, C., & Rudel, R. A. (2019). Environmental justice and drinking water quality: Are there socioeconomic disparities in nitrate levels in U.S. drinking water? Environmental Health, 18(1), 3. doi: 10.1186/s12940-018-0442-6

2.

Balazs, C. L., & Ray, I. (2014). The drinking water disparities framework: On the origins and persistence of inequities in exposure. American Journal of Public Health, 104(4), 603–611. doi: 10.2105/AJPH.2013.301664

3.

Morello-Frosch, R., Pastor, M., Sadd, J., & Shonkoff, S. B. (n.d.). The climate gap: Inequalities in how climate change hurts Americans & how to close the gap. https://dornsife.usc.edu/assets/sites/242/docs/ClimateGapReport_full_report_web.pdf [PDF - 808 KB]

4.

Mikati, I., Benson, A. F., Luben, T. J., Sacks, J. D., & Richmond-Bryant, J. (2018). Disparities in distribution of particulate matter emission sources by race and poverty status. American Journal of Public Health, 108(4), 480–485. doi: 10.2105/AJPH.2017.304297

5.

Tessum, C. W., Apte, J. S., Goodkind, A. L., Muller, N. Z., Mullins, K. A., Paolella, D. A., Polasky, S., Springer, N. P., Thakrar, S. K., Marshall, J. D., & Hill, J. D. (2019). Inequity in consumption of goods and services adds to racial-ethnic disparities in air pollution exposure. Proceedings of the National Academy of Sciences, 116(13), 6001–6006. doi: 10.1073/pnas.1818859116

6.

Woo, B., Kravitz-Wirtz, N., Sass, V., Crowder, K., Teixeira, S., & Takeuchi, D. T. (2019). Residential segregation and racial/ethnic disparities in ambient air pollution. Race and Social Problems, 11(1), 60–67. doi: 10.1007/s12552-018-9254-0

7.

U.S. Global Change Research Program. (2016). The impacts of climate change on human health in the United States: A scientific assessment (pp. 1–312). https://health2016.globalchange.gov/low/ClimateHealth2016_FullReport_small.pdf [PDF - 19.6 MB]

8.

U.S. Department of Health and Human Services, Office of the Assistant Secretary for Health. (2021, August 29). Climate change and health equity [text]. https://www.hhs.gov/ocche/climate-change-health-equity/index.html

9.

Centers for Disease Control and Prevention. (2018, October 10). Water-related diseases and contaminants in public water systems. https://www.cdc.gov/healthywater/drinking/public/water_diseases.html

10.

Centers for Disease Control and Prevention. (2020, December 1). Waterborne disease in the United States. https://www.cdc.gov/healthywater/surveillance/burden/index.html

11.

Centers for Disease Control and Prevention. (2021, August 10). Drinking water. https://www.cdc.gov/healthywater/drinking/index.html

12.

United States Environmental Protection Agency. (2015, April 1). Overview of the Safe Drinking Water Act [other policies and guidance]. https://www.epa.gov/sdwa/overview-safe-drinking-water-act

13.

Switzer, D., & Teodoro, M. P. (2017). The color of drinking water: Class, race, ethnicity, and Safe Drinking Water Act compliance. Journal AWWA, 109(9), 40–45. doi: 10.5942/jawwa.2017.109.0128

14.

Balazs, C., Morello-Frosch, R., Hubbard, A., & Ray, I. (2011). Social disparities in nitrate-contaminated drinking water in California’s San Joaquin Valley. Environmental Health Perspectives, 119(9), 1272–1278. doi: 10.1289/ehp.1002878

15.

Balazs, C. L., Morello-Frosch, R., Hubbard, A. E., & Ray, I. (2012). Environmental justice implications of arsenic contamination in California’s San Joaquin Valley: A cross-sectional, cluster-design examining exposure and compliance in community drinking water systems. Environmental Health: A Global Access Science Source, 11, 84. doi: 10.1186/1476-069X-11-84

16.

McDonald, Y. J., & Jones, N. E. (2018). Drinking water violations and environmental justice in the United States, 2011–2015. American Journal of Public Health, 108(10), 1401–1407. doi: 10.2105/AJPH.2018.304621

17.

Lothrop, N., Wilkinson, S. T., Verhougstraete, M., Sugeng, A., Loh, M. M., Klimecki, W., & Beamer, P. I. (2015). Home water treatment habits and effectiveness in a rural Arizona community. Water (20734441), 7(3), 1217–1231. doi: 10.3390/w7031217

18.

Stillo, F., & Gibson, J. M. (2017). Exposure to contaminated drinking water and health disparities in North Carolina. American Journal of Public Health, 107(1), 180–185. doi: 10.2105/AJPH.2016.303482

19.

Agency for Toxic Substances and Disease Registry. (n.d.).ToxFAQsTM for arsenic. Retrieved December 20, 2021, from https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=19&toxid=3

20.

Agency for Toxic Substances and Disease Registry. (n.d.). ToxFAQsTM for nitrate and nitrite. Retrieved December 20, 2021, from https://wwwn.cdc.gov/TSP/ToxFAQs/ToxFAQsDetails.aspx?faqid=1186&toxid=258

21.

Centers for Disease Control and Prevention. (2021, September 30). Air quality. https://www.cdc.gov/air/default.htm

22.

World Health Organization (n.d.). Air pollution. Retrieved December 21, 2021, from https://www.who.int/westernpacific/health-topics/air-pollution

23.

Turner, M. C., Krewski, D., Pope, C. A., Chen, Y., Gapstur, S. M., & Thun, M. J. (2011). Long-term ambient fine particulate matter air pollution and lung cancer in a large cohort of never-smokers. American Journal of Respiratory and Critical Care Medicine, 184(12), 1374–1381. doi: 10.1164/rccm.201106-1011OC

24.

Alexeeff, S. E., Liao, N. S., Liu, X., Van Den Eeden, S. K., & Sidney, S. (2021). Long-term PM2.5 exposure and risks of ischemic heart disease and stroke events: Review and meta-analysis. Journal of the American Heart Association, 10(1), e016890. doi: 10.1161/JAHA.120.016890

25.

Kaufman, J. D., Adar, S. D., Barr, R. G., Budoff, M., Burke, G. L., Curl, C. L., Daviglus, M. L., Diez Roux, A. V., Gassett, A. J., Jacobs, D. R., Kronmal, R., Larson, T. V., Navas-Acien, A., Olives, C., Sampson, P. D., Sheppard, L., Siscovick, D. S., Stein, J. H., Szpiro, A. A., & Watson, K. E. (2016). Association between air pollution and coronary artery calcification within six metropolitan areas in the USA (the multi-ethnic study of atherosclerosis and air pollution): A longitudinal cohort study. Lancet, 388(10045), 696–704. doi: 10.1016/S0140-6736(16)00378-0

26.

Saha, S., Vaidyanathan, A., Lo, F., Brown, C., & Hess, J. J. (2021). Short term physician visits and medication prescriptions for allergic disease associated with seasonal tree, grass, and weed pollen exposure across the United States. Environmental Health, 20(1), 85. doi: 10.1186/s12940-021-00766-3

27.

Demain, J. G. (2018). Climate change and the impact on respiratory and allergic disease: 2018. Current Allergy and Asthma Reports, 18(4), 22. doi: 10.1007/s11882-018-0777-7

28.

Strosnider, H. (2017). Rural and urban differences in air quality, 2008–2012, and community drinking water quality, 2010–2015—United States. Morbidity and Mortality Weekly Report, Surveillance Summaries, 66. doi: 10.15585/mmwr.ss6613a1

29.

Bell, M. L., & Ebisu, K. (2012). Environmental inequality in exposures to airborne particulate matter components in the United States. Environmental Health Perspectives, 120(12), 1699–1704. doi: 10.1289/ehp.1205201

30.

Basner, M., Babisch, W., Davis, A., Brink, M., Clark, C., Janssen, S., & Stansfeld, S. (2014). Auditory and non-auditory effects of noise on health. Lancet, 383(9925), 1325–1332. doi: 10.1016/S0140-6736(13)61613-X

31.

Casey, J. A., Morello-Frosch, R., Mennitt, D. J., Fristrup, K., Ogburn, E. L., & James, P. (2017). Race/ethnicity, socioeconomic status, residential segregation, and spatial variation in noise exposure in the contiguous United States. Environmental Health Perspectives, 125(7), 1–10. doi: 10.1289/EHP898

32.

Huang, Y.-K., Mitchell, U. A., Conroy, L. M., & Jones, R. M. (2021). Community daytime noise pollution and socioeconomic differences in Chicago, IL. PLoS ONE, 16(8), 1–12. doi: 10.1371/journal.pone.0254762

33.

Brender, J. D., Maantay, J. A., & Chakraborty, J. (2011). Residential proximity to environmental hazards and adverse health outcomes. American Journal of Public Health, 101(Suppl 1), S37–S52. doi: 10.2105/AJPH.2011.300183

34.

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35.

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36.

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37.

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39.

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41.

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42.

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43.

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44.

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45.

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