Salty ocean water is making its way into the Delaware River, threatening a source of drinking water for Philadelphia and millions of other people, including many in New Jersey.

Drought and sea level rise are causing salty oceanwater to creep into the Delaware River, threatening a source of drinking water for Philadelphia and millions of other people

Salt water from the ocean is starting to creep into the Delaware River Basin due to intensifying drought and sea level rise, according to officials.

Drought and sea level rise are causing salty ocean water to creep into the Delaware River, threatening a source of drinking water for Philadelphia, New Jersey and New York City.