this is from garynull.com
Some segments of our society would like us to believe that pollution may only
be a problem for future generations, but mounting evidence indicates that
pollutants are affecting us now. For example, a recent study by University of
Iowa researchers found that herbicide contamination in municipal water
supplies in some Iowa communities is disrupting the normal growth of fetuses.

How well an infant grows during fetal development has been found to be a good
predictor of reproductive health. Intrauterine Growth Retardation (IUGR) is a
condition in which a baby's weight at birth is very low relative to other
babies of the same gestational age (less than the 10th percentile). IUGR has
been associated with poor neonatal health, including apnea, bradycardia,
respiratory distress, hypocalcemia, sepsis, cerebral palsy and impaired
development lasting into childhood.

In the University of Iowa study, infants of mothers living in several
communities with herbicide-polluted water had a higher risk of IUGR. The mean
level of the most notable contaminant, the herbicide atrazine, was 2.2
micrograms per liter. The current maximum concentration level permitted for
atrazine in drinking water is 3 micrograms per liter. Considering that
children were being damaged at levels below those considered safe, a revision
of standards may be in order. Based on information in: Environmental Health
Perspectives, March 1997