Financial penalties for exceeding pollution limits under the Clean Water Act are relatively rare, we found in our investigation of enforcement in the Northwest.
Nevertheless, some polluters do get fined. The interactive map above, based on records provided to InvestigateWest and EarthFix by Oregon and Washington's environmental agencies and the EPA, which oversees enforcement in Idaho, shows the facilities fined since 2009.
The color of each placemarker indicates the total amount of the penalty or penalties, with blue the lowest and yellow the highest. Click on a placemarker to see actual dollar amounts.