Nitrate in drinking water linked to preterm birth rates (IMAGE)
Caption
Map of Nitrate Measures in Public Water: Iowa (1970-1988). Figure 2 reports the median nitrate level in each month-year of all reported public water measures in Iowa (1970-1988). Each blue point is a nitrate measure (mg/L) <=10 mg/L (the maximum contaminant level set by the EPA). Each red point is a nitrate measure >10 mg/L. Points are shaded by nitrate measure on a continuous scale.
Credit
Semprini, 2025, PLOS Water, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
Usage Restrictions
Credit must be given to the creator.
License
CC BY