Table 2:
Summary of estimated drinking water nitrate exposure during 12 months prior to birth by year of birth in Missouri, 2004–2008.
| Year | N (births) | Mean ± SD (mg/L) |
Median concentration (mg/L) |
Minimum concentration (mg/L) |
Maximum concentration (mg/L)a |
|---|---|---|---|---|---|
| 2004 | 69,658 | 0.30 ± 0. 46 | 0.20 | 0.03 | 5.82 |
| 2005 | 70,395 | 0.34 ± 0.50 | 0.24 | 0.03 | 5.80 |
| 2006 | 70,455 | 0.22 ± 0.46 | 0.12 | 0.03 | 6.02 |
| 2007 | 71,019 | 0.30± 0.60 | 0.15 | 0.03 | 5.96 |
| 2008 | 66,723 | 0.71 ± 0.99 | 0.33 | 0.03 | 6.36 |
a
All concentrations below the EPA’s MCL of 10 mg/L