Underground pollution is threatening the Philippines’ corals

Underground pollution is threatening the Philippines’ corals

Sitting along the Pacific Ring of Fire, the Philippines’ volcanic geology features porous rocks that allow water to move easily underground and flow into its ocean. These hidden flows – called submarine groundwater discharge – are known to maintain balance in the ocean’s chemistry. But with experts noting that only about 30% of the country’s wastewater is being treated, these flows have an insidious impact. Submarine groundwater discharge (SGD) …