Virginia continues to look for water pollution — and find it.
About 13,140 miles of the state's rivers and streams are dirty, a report said Monday. That's a quarter of Virginia's river miles and an increase of 840 miles since 2010.
The report also outlines new pollution such as:
Low oxygen levels — a problem for fish — in Falling Creek Reservoir in Chesterfield County. The cause is unknown. The lake is popular with swimmers in that area but stopped being a drinking-water source for Chesterfield in 1985.
The reservoir continues to have bacteria problems, too, but a problem with acidity has been resolved.
PCBs in 6 miles of Gillies Creek in Henrico County and Richmond. The source is unknown.
High levels of fecal bacteria in 14 miles of the Chickahominy River east of Richmond. The source is unknown.