CPCB directs KSPCB to identify pollution sources in water bodies

The Central Pollution Control Board (CPCB) has once again instructed the Karnataka State Pollution Control Board (KSPCB) to identify pollution sources in stagnant water bodies across Bengaluru and the state to improve water quality. In a letter dated January 6, 2025, CPCB raised concerns after reviewing water quality data of lakes, tanks, and ponds submitted under the National Water Quality Monitoring (NWMP) program.

The report highlighted critical parameters such as dissolved oxygen, pH, biological oxygen demand, and faecal coliform, indicating severe pollution in several water bodies. The CPCB noted that the data was compared with primary water quality criteria for outdoor bathing under the Environment Protection Rule, 1986, and found that several monitoring locations required immediate attention. It has urged KSPCB to identify sources of pollution, especially in non-compliant areas, and take corrective measures. Monthly water quality reports from KSPCB indicate a worsening situation in Bengaluru’s lakes and tanks.

The number of lakes categorized under the worst water quality classification (Class E) has surged over the years, even during monsoons.

 City-based lake activists argue that KSPCB has largely restricted its role to collecting water samples and generating reports rather than enforcing measures to curb pollution. “KSPCB must analyze reports, hold polluters accountable, and work towards ending lake pollution,” said Raghavendra Pachhapur, senior lead projects at ActionAid Association.