Sidwell Friends Middle School

Restorative Landscapes: Sidwell Friends Middle School
Sidwell-Traditional Sidwell-Sustainable

Landscape Performance Benefits

Environmental

  • Prevents over 317,900 gallons of wastewater from entering the District of Columbia’s overburdened sewer system each year, saving $1,687 in sewer charges.
  • Reduces potable water consumption by an average of 8,500 gallons per month by reusing treated wastewater to flush toilets.
  • Captures 68% of rainfall from a 1-year storm, 9,820 gallons, in the green roof on the middle school addition.
  • Prevented over 100 tons of material from entering landfills by using 8,000 board feet of reclaimed wood and 77.5 tons of reclaimed stone for decking, walls, and stairs.

Social

  • Promotes environmental awareness with over 10,000 visitors touring the site in its first five years. Over half of these tours were led by 8th grade students.

Other Examples

Sidwell Friends Middle School

Prevents over 317,900 gallons of wastewater from entering the District of Columbia’s overburdened sewer system each year, saving $1,687 in sewer charges.

Brent Elementary Schoolyard Greening: Phase 1

Decreases daytime summer surface temperatures by an average of 23°F and air temperature by 9°F by replacing 1,500 sf of asphalt play surface with a rain garden. 

The Willow School

Reduces potable water consumption by 375,000 gallons per year by using harvested rainwater to flush school toilets. This saves $2,230 annually.

William G. Milliken State Park, Phase 2 Lowland Park

Filters an anticipated 100% of surface runoff totaling 4.5 million gallons annually, from 12.5 acres of developable properties adjacent to the park.

Advocate Lutheran General Hospital Patient Tower

Prevents or slows approximately 90% of site’s annual stormwater runoff from entering the municipal storm sewer system, managing stormwater volumes up to 309,000 gallons of water in a single event.

At a Glance