Punjab Makes Septic Tanks Mandatory for Housing Societies to Protect Groundwater

LAHORE: The Punjab Environmental Protection Agency (EPA) has introduced a strict new regulation making septic tanks compulsory for every house and plaza in housing societies, in a bid to protect groundwater and water reservoirs from sewage contamination.

According to Director General EPA Imran Hamid Sheikh, all housing societies have been instructed to adopt a “dual water management” system. This includes the construction of three-compartment septic tanks at household level and installation of a sewage treatment plant at the society level. Research has shown that three-compartment septic tanks can reduce around 70% of solid waste and 40% of pollution from sewage water.

The department has also specified septic tank sizes for different properties:

* **5-marla house:** 6 ft long, 4 ft wide, 4 ft deep
* **10-marla house:** 9 ft long, 6 ft wide, 4 ft deep
* **1-kanal plaza:** 10 ft long, 6 ft wide, 5 ft deep
* **3–4 kanal plazas:** 15 ft long, 6 ft wide, 5 ft deep
* **Above 4 kanals:** 16 ft long, 6 ft wide, 5 ft deep

DG EPA confirmed that no new housing society will be granted environmental approval unless it fulfills the septic tank requirement. Directives have been issued to LDA, FDA, GDA, RDA, and all relevant authorities, while deputy commissioners have been instructed to enforce the regulation at the stage of land allocation. The Judicial Water and Environment Commission has also been informed. EPA field officers will closely monitor compliance to ensure groundwater and the environment remain protected.

EPA Deputy Director Ali Ijaz explained that a septic tank is an underground structure made of concrete or bricks that partially treats wastewater from homes and buildings. Through a staged process, heavy particles settle at the bottom, grease and foam rise to the top, and relatively cleaner water flows into the next chamber. This system prevents direct discharge of sewage into the ground, reducing risks of waterborne diseases like cholera, typhoid, and hepatitis.

He added that while septic tanks cannot make wastewater drinkable, they significantly reduce contamination levels and protect public health.

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