The US Environmental Protection Agency (EPA) is considering a rethink on a decision made not to cap the acceptable levels of a toxic substance used in rocket fuel in the nations' drinking water supply.
In 2008, the agency said it would not introduce restrictions on the levels of toxic chemical perchlorate in drinking water, but has now decided to review the decision.
Perchlorate, which has been detected in supplies over 35 states, has been shown to interfere with thyroid functions and stunt development in humans.
Until a decision is reached by the EPA, it has recommended that no more than 15 parts of the chemical per billion parts of water be exceeded.
The agency's assistant administrator for water Benjamin Grumbles commented: "This is a sensible step for protecting public health and preserving regulatory options as the science of perchlorate is reviewed."
In related news, the Chesapeake Bay Foundation, dedicated to the preservation of the US' largest estuary, filed a lawsuit against the EPA this week due to its apparent lack of action over clearing up the bay area.
