The rain that pays for itself

ByMIMI KAPLAN
March 30, 2017 13:00

Jerusalem has approximately 896,112 sq.m. of roof space on public buildings, which could yield a water saving of 384,253 cu.m. annually.




Israel finance

Years until the Savings Equals the Investment. (photo credit:JERUSALEM INSTITUTE FOR POLICY RESEARCH)

Atop a 1,000-sq.m. roof of a school building, rainwater runs into gutters at the perimeter. Through the gutters, the water flows into a large reservoir, connected to the school’s toilets by a separate line to avoid cross connections with city water.

A pressure switch activates only upon a toilet flush in the school bathroom, causing the water to flow once again and refill the toilet.

Read More...

Related Content
Letters
June 22, 2017
Grapevine: Kudos where kudos is due

By GREER FAY CASHMAN