Five grams of surface sediment samples from each site were processed. Extractions were performed with 4 cm 3 of 100% HPLC acetone. Samples were stored in the dark for 24 hours at -20°C. They were then ...

EPA Administrator Lee Zeldin visited the polluted Tijuana River on the U.S.-Mexico border, calling for a '100% solution' to ...

American Rivers ranks the Tijuana River No. 2 on its list of most endangered rivers. Advocates are urging the U.S. and Mexico ...

Mexico is slated to dump around 400 million gallons of sewage into the Tijuana River, which will mostly likely flow into the United States, a decades-old problem that has posed environmental ...

Imperial Beach leaders introduce a new resolution to bring awareness to the cross-border sewage crisis along the U.S.-Mexico ...

Named the 5th most endangered river in the US, the Rio Grande's challenges include severe drought, unsustainable use and ...

The U.S. and Mexico have been tangled in dispute regarding a 1944 treaty that stipulates that Mexico City send 1.75 million acre-feet of water to the U.S. from the Rio Grande River every five years.

In return, the United States sends 1.5 million acre-feet of water yearly to Mexico from the Colorado River. An acre-foot of water is about 325,000 gallons, equivalent to an acre of land flooded ...