The city of Rialto is dealing with decades of damage done by military storage facilities for rockets and explosives. Those weapons contained perchlorate, known to interfere with the production of thyroid hormones in humans in a way that is especially dangerous for young children and fetuses. Now six of the city's 13 water wells are contaminated with the chemical, and the fight is just beginning over who will pay for the cleanup.
Perchlorate pollution has also been plaguing lettuce growers and milk producers throughout the country.
(Comments are open to all. See the list of environmental blogs on my sidebar.)