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Photos: How D.C. keeps its water safe from lead

Neal Augenstein | naugenstein@wtop.com

April 4, 2016, 2:54 AM

Lead leaching from lead pipes into drinking water was the focus of Washington, D.C.'s drinking water crisis. (91欧美激情/Neal Augenstein)
Tom Jacobus, general manager of the Washington Aqueduct, demonstrates how the addition of orthophosphate during the water treatment process changes the composition of aging lead pipes in customers’ homes. Adding orthophosphate prevents lead pipes from leaching lead into a home’s drinking water. Related story: 聽 (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Even without lead service lines, which carry water from the street into a home, lead can be introduced in copper pipes with lead solder or older fixtures, which were allowed to contain large amounts of lead.   (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
In the lower level of the Washington Aqueduct, orthophosphate is ready to be introduced to the water treatment process. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
The amount of orthophosphate added to the water was tweaked soon after treatment began in 2004, says Tom Jacobus of the Washington Aqueduct. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Pumps add orthophosphate to water toward the end of the treatment process, says Tom Jacobus. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
The Washington Aqueduct now runs lead pipe loops, which allows fully treated water to run through lead pipes at the plant, to make sure corrosion is being controlled. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
In addition to real-time computer monitoring of orthophosphate levels, scientists at the Aqueduct sample treated water hourly in the laboratory. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Before Flint, Michigan, the nation's capital dealt with its own lead-in-water crisis. (91欧美激情/Neal Augenstein)
By testing lab samples of water hourly for corrosion, in addition to computerized readings, 聽the Washington Aqueduct has a second method of聽ensuring drinking water isn’t causing leaching of lead from lead pipes. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Water turns blue in the vial during testing at the Washington Aqueduct as part of the procedure to make sure treated water isn’t causing corrosion of lead service lines and pipes. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Customers of DC Water can have drinking water tested for lead. (91欧美激情/Neal Augenstein)
DC Water customers can request free tests of their tap water. 聽Samples sent for lead testing are done at the Aqueduct. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
If testing at the Washington Aqueduct reveals unsafe levels of lead in customers’ water, DC Water offers suggestions on making sure lead-free water is used for drinking, cooking, and food preparation. (91欧美激情/Neal Augenstein)
91欧美激情/Neal Augenstein
Tom Jacobus, general manager of the Washington Aqueduct, demonstrates how the addition of orthophosphate during the water treatment process helps reduce leaching of lead in customers’ homes. (91欧美激情/Neal Augenstein)
Virginia Tech environmental engineer Marc Edwards has been instrumental in researching the Flint and D.C. lead-in-water crises. (Photo courtesy Virginia Tech)
Photo courtesy Virginia Tech
Marc Edwards examines plumbing in Flint, Michigan. (Photo courtesy Virginia Tech)
Environmental engineer Marc Edwards examines plumbing in Flint, Michigan. (Photo courtesy Virginia Tech)
Photo courtesy Virginia Tech
Marc Edwards and students from Virginia Tech are testing drinking water in Flint, Michigan. (Photo courtesy Virginia Tech)
Marc Edwards and students from Virginia Tech are testing drinking water in Flint, Michigan. (Photo courtesy Virginia Tech)
Photo courtesy Virginia Tech
In 2004, four-year-old Nic Cappella cries as a blood sample is drawn. (Photo by Alex Wong/Getty Images)
In 2004, four-year-old Nic Cappella cries as a blood sample is drawn as he is tested for lead. (Photo by Alex Wong/Getty Images)
Photo by Alex Wong/Getty Images
Water filters were handed out during D.C.'s drinking water crisis. (Photo by Alex Wong/Getty Images)
Water filters were handed out in 2004, during D.C.’s drinking water crisis. (Photo by Alex Wong/Getty Images)
Photo by Alex Wong/Getty Images
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Lead leaching from lead pipes into drinking water was the focus of Washington, D.C.'s drinking water crisis. (91欧美激情/Neal Augenstein)
Before Flint, Michigan, the nation's capital dealt with its own lead-in-water crisis. (91欧美激情/Neal Augenstein)
Customers of DC Water can have drinking water tested for lead. (91欧美激情/Neal Augenstein)
Marc Edwards examines plumbing in Flint, Michigan. (Photo courtesy Virginia Tech)
Marc Edwards and students from Virginia Tech are testing drinking water in Flint, Michigan. (Photo courtesy Virginia Tech)
In 2004, four-year-old Nic Cappella cries as a blood sample is drawn. (Photo by Alex Wong/Getty Images)
Water filters were handed out during D.C.'s drinking water crisis. (Photo by Alex Wong/Getty Images)

Neal Augenstein

Neal Augenstein has been a general assignment reporter with 91欧美激情 since 1997. He says he looks forward to coming to work every day, even though that means waking up at 3:30 a.m.

naugenstein@wtop.com

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