The Lowdown on Why Water Use is Down in DC

By Ken Pantuck

It turns out that when it comes to water conservation, what goes up sometimes does come down.  And what each of us does in our homes really does have an impact.

Water consumption in the District of Columbia is down from an average of 125 million gallons per day in 2004 to 100 million gallons today, according to recent reports from DC Water.   Similarly, the amount of wastewater going to Washington’s Blue Plains Wastewater Treatment Plant has declined over the past decade.

A shot of DC’s urban water resources Photo courtesy of Flickr photographer ad454 from EPA’s State of the Environment Photo Project

A shot of DC’s urban water resources. Photo courtesy of Flickr photographer ad454 from EPA’s State of the Environment Photo Project

How did this reduction occur?  It seems to be a combination of factors.  Homeowners have decided to use water-saving appliances in new homes and to replace water consumptive fixtures.  DC Water has pushed an effective and ongoing program to repair and replace aging and deteriorated sewer segments.  Proactive steps have been taken to eliminate other sources of water in the system, like tidal intrusions. And rainfall and ground water levels have been lower than normal.

Although earth is often referred to as the “water planet” with about 70% of its surface covered by water, less than 1% of the water is available for human use.  Water supplies are finite, and the residents and wastewater utility in DC are helping to protect this critical and precious resource where they live.  The story of water use in the district shows that the collective action of individuals can make a big difference to ensure there is enough clean water for generations to come.

The water conservation message is simple and something that any municipality, large or small, can easily promote.  Encouraging residents to use less water is low cost and can produce significant savings.  For example, the 25 million gallons of water savings in DC also results in a savings of $2,500 per day in processing costs at the Blue Plains Treatment Plant.  Even more important, lower rates of water use means that less water is going through a wastewater system, which can relieve the pressure on treatment plants during large storm events.  In a smaller plant, this could mean the difference between expanding the plant or not.

What can you do to help reduce water use where you live?  One thing is to look for WaterSense-labeled water appliances for your home.  WaterSense is an EPA partnership program that seeks to protect the future of our nation’s water supply by offering people a simple way to use less water with water-efficient products, homes, and services.  Get lots of tips for how you can save water in your home here.