Free check · West Bengal · sources up to 2015

Is rainwater harvesting mandatory for your building in West Bengal?

Mandatory for all buildings (2007 rules). Answer a few questions about your plot to see whether it applies to you.

Common buildings in West Bengal

The answer for typical plots, new buildings, roof taken as 70% of the plot. Use the checker for your own sizes.

Building	Answer
House on a 100 sq yd (gaj) plot	Mandatory
House on a 200 sq yd plot	Mandatory
House on a 300 sq yd plot	Mandatory
Villa on a 500 sq yd plot	Mandatory
Apartment block on 1,500 m²	Mandatory
Shop or office on 400 m²	Mandatory
School on 4,000 m²	Mandatory
Factory on 10,000 m²	Check locally

For an existing building, tick the box in the checker: most rules are written for new buildings.

The rule in West Bengal

Rainwater harvesting is mandatory for all buildings under the West Bengal Municipal (Building) Rules, 2007 (Rule 171). A 2015 government reply said the 2009 rules apply it to buildings with a roof area above 20,000 sq m, which looks inconsistent with the 2007 rule.

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Rainwater harvesting cost in West Bengal

Pick your district for the price of a recharge system for your building.

Frequently asked questions

Is rainwater harvesting mandatory in West Bengal?

Mandatory for all buildings (2007 rules). Rainwater harvesting is mandatory for all buildings under the West Bengal Municipal (Building) Rules, 2007 (Rule 171). A 2015 government reply said the 2009 rules apply it to buildings with a roof area above 20,000 sq m, which looks inconsistent with the 2007 rule.

Is rainwater harvesting mandatory for a 200 gaj house in West Bengal?

Yes, rainwater harvesting is mandatory for your building. West Bengal Municipal (Building) Rules, 2007, Rule 171 covers every new house in West Bengal, whatever its size.

How do I check if my building in West Bengal needs rainwater harvesting?

Enter your plot area, roof area and number of floors in the checker on this page, in square feet, square yards (gaj) or square metres. It compares them with West Bengal's rule, West Bengal Municipal (Building) Rules, 2007, Rule 171, and tells you whether it applies and why.