NYTs article here.
An excerpt:
As a result, some businesses are declaring that the law no longer applies to them. And pollution rates are rising.
Companies that have spilled oil, carcinogens and dangerous bacteria into lakes, rivers and other waters are not being prosecuted, according toEnvironmental Protection Agencyregulators working on those cases, who estimate that more than 1,500 major pollution investigations have been discontinued or shelved in the last four years.