Article: Judge: EPA must regulate ship water discharge

An appeals court Wednesday upheld a ruling ordering the Environmental Protection Agency to regulate the water discharged from ships as a way to protect local ecosystems from invasive species.

The 9th U.S. Circuit Court of Appeals said it agreed with the federal judge who in 2005 ruled that the EPA exceeded its authority in exempting certain ship discharges from the pollution control requirements of the 1972 Clean Water Act.

A handful of environmental groups and states sued the EPA to require it to regulate ballast water because of concerns that invasive aquatic species such as mollusks were being pumped into local waters.

Except for sewage, ship discharges are exempt ...

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