04:02
Due West: Aliso Creek
Aliso Creek, located in Orange County, California, has a consistent beach pollution problem due to rapid development of the upstream environment. As the watershed has been largely paved over, the water is prevented from soaking in and filtering natu...
11:59
Water: Trans-Border Water Pollution
Because of the geography of the region and because Tijuana's sewage infrastructure has not kept pace with the city's growth, sewage enters the Tijuana River and flows into the United States. At some points, sewage flows directly onto the beach. The ...