Balazs et al. 2015 Synthesis Map (Revised Arsenic Rule (More difficult for…
Balazs et al. 2015 Synthesis Map
Revised Arsenic Rule
Lowered arsenic MCL
MCL: Maximum Contaminant Level
More difficult for some CWSs to accomodate than others
These communities may lack the funding, staffing, know-how, and politicial capital to obtain the resources they need to update their CWSs to get them to the standard of the Revised Arsenic Rule.
Leads to hypothesis: communities with a greater proportion of low SES/minority residents will also have a higher amount of MCL violations and arsenic levels.
Leads to experiment: Using water quality and demographic data, researchers measured the correlation between proportion of low SES residents (as quantified by home ownership %) and arsenic MCL violations/arsenic levels; then did the same with the proportion of minority residents
Leads to unsurprising findings...
As the proportion of SES residents increases, the number of MCL violations and arsenic levels increases
As the proportion of minority residents increases, the number of MCL violations and arsenic levels increases
Hypothesis proved correct
Leads to follw-up research question...
What other pollutants increase with the proportion of low SES/minority residents?
1 more item...
Why is this the case?
Community water system