5 hrs ago

Groundwater Falls to Dangerous Levels in Chennai Suburbs

Chennai’s groundwater is not at the same level everywhere.

In many central areas, water is closer to the ground, but people in some suburbs depend on deep borewells.

Homes and apartment buildings pump groundwater for drinking and everyday chores.

Factories also use a lot of water in some areas.

This heavy use has caused water levels to fall in several suburbs and industrial areas.

In parts of North Chennai, seawater could seep into groundwater and make it salty.

Rain can refill groundwater, and lakes and ponds can help hold water.

The article says these water bodies need to be desilted and protected from encroachment.

If rains are delayed or weak, suburbs could face water shortages next summer.

Key facts

Chennai average groundwater level: 9.6 feet, according to the article.
Central Chennai examples: Groundwater is reported within 2 to 3 feet in Jaffer Khanpet, Vepery and Raja Annamalai Puram.
Suburban borewells: The article says borewells in areas including Tambaram, Chromepet, Pallavaram and Medavakkam extend to depths of 300 to 700 feet.
Chengalpet rural average: 10.5 feet, while areas near Chennai, including Tambaram and Vandalur, are reported to have falling levels.
Kanchipuram average: Groundwater is reported at 9 to 11 feet on average.
Industrial-area decline: The article reports groundwater levels of 250 to 300 feet in Oragadam and Sriperumbudur, attributing the decline to overexploitation.
Potential risks: Seawater seepage could make groundwater saline in depleted coastal areas of North Chennai.

deccanchronicle.com · 5 hrs ago