400 Year Old Dependable Rainwater System Design

What do you do for domestic water supply on an island that has no rivers, lakes or a dependable water supply?

The inhabitants of Bermuda, a small island in the North Atlantic have been collecting rain water from their roofs for hundreds of years. The white stepped roofs, once made of limestone, are still being used today to collect rainfall to be stored for later use. The steps in the roofs, designed 400 years ago were meant to slow the flow of the water to be collected from gutters with the water being stored under the house.

Roofs like this one built in 1640 are the only dependable source of domestic supply for the island’s 60,000 inhabitants. Limestone roofs were heavy which in part was a good choice against high winds and the white limestone mortar had anti-bacterial qualities. This practice is now mandated in building regulations requiring 8 gallons of storage for every square foot of roof. To meet the demands of increased population growth and tourism, desalination is being introduced with six plants on the island producing 13,500 meters per day.

Necessity is the mother of invention. These early settlers, as well as today’s inhabitants,  are meeting their needs through conservation and cooperation.

Read more at BBC News.

Ken Blair
A rainwater collection systems designer and consultant, Ken has designed and installed residential and commercial systems, primarily in the northwest United States for more than 10 years and, in 2014, began consulting and managing builds in other states. Ken is an accredited ARCSA Professional Designer / Installer and Life Member, the Northwest Regional ARCSA representative and advisor to its education committee and is available to speak about Rainwater Collection Systems design and builds.

Ken is a United States Navy veteran, having served on active duty during the Vietnam War era.

A career entrepreneur, Ken created a new business focus with a commercial dive company in Hawaii in the mid 1980′s to respond to and clean up oil spills, oil spill equipment training, service and maintenance for the oil co-op service industry. Ken is passionate about having a positive impact on the environment and is also a founding director of BANK-ON-RAIN (2011-2014), whose mission is to create grassroots solutions for rainwater collection for consumption and agriculture in developing areas of the planet.