Clean Water Act

Companies have drilled thousands of the nearly 270,000 wells in the West since 1980 under an exemption from the Clean Water Act that sets standards for stormwater discharge despite the potential for significant runoff from thousands of well pads, pipelines and other infrastructure. In 1987, Congress added amendments to the Clean Water Act requiring EPA to develop a permitting program for stormwater runoff. These amendments exempted oil and gas exploration, production, processing or treatment operations, and transmission facilities. However, the EPA considered the standards to apply to construction facilities.
Beginning in 1992, the EPA required stormwater permits for oil and gas construction facilities of five acres or more. In the 2005 Energy Bill, Congress extended the exemption to all oil and gas construction facilities (Clean Water Act 2008, EPA NPDES 2006, W&WNews 2006).

In New Mexico, anglers fishing the trout waters of the San Juan River below Navajo Dam have seen a dramatic decline in the quality of fishing over the last seven years. This four-mile stretch of the San Juan was once rated as a world-class trout fishery that was estimated to bring approximately $40 million to the region each year. But anglers say that fishing has dwindled in part due to sediment run-off impacting the river that has coincided with a dramatic increase in oil and gas development and infrastructure.

 Over the past 30 years, companies have drilled close to 20,000 wells in San Juan County and Rio Arriba County that straddle the San Juan River. Hundreds of wells and associated networks of roads and pipelines are located within three major drainage areas that flow into this stretch of the river (Bryan 2009). Application of the Clean Water Act could help reduce the runoff from oil and gas activities.

Environmental Working Group