The East Kalimantan Environment Agency said test results indicate that logging and mining activities have led to an 'alarming' rate of pollution in the Mahakam River.

Tests in 2011 showed water pollutants in the river at a level of 10.19, a worrisome increase from 3.85 in 2009, the Jakarta Globe reported. "That means that Mahakam is heavily polluted," agency head Suyitno was quoted as saying. He said the Mahakam was the source of water supply for an