Which of the Following Is Not a Successful Pollution-Control Outcome

Which of the following is not a successful pollution-control outcome according to the EPA?

A) Levels of wet sulfate dropping by 20%
B) Over 800 of the 1500 Superfund sites have been cleaned up
C) Release of toxic chemicals has decreased by 48% since 1988
D) Emissions of six air pollutants have decreased by 25%
E) 50% of rivers and streams are in violation of water quality standards