Health Effects of Exposure to Lead in Drinking Water

Lead and Your Health

Lead is a powerful neurotoxin, which means exposure to lead can damage the brain. It can also injure other soft tissues and organs, can interfere with the formation of blood, and exposure to enough lead can even kill. Both children and adults are vulnerable to lead’s health effects.

Common Health Effects on Children:

  • Brain damage resulting in IQ loss, learning disabilities, hyperactivity, inability to concentrate, and/or behavior problems
  • Stunted growth
  • Hearing problems 

Common Health Effects on Adults:

  • Hypertension
  • Anemia
  • Reduced sperm count
  • Increased risk of miscarriages

Young children are most vulnerable to lead’s effects because prior to age six, their brain and central nervous system are still forming and easily susceptible to damage. For an adult to suffer significant health effects, exposure to lead would have to be sustained and more intense. Most adults who are affected by lead have been exposed in an occupational setting, such as working as a house painter or in a battery recycling plant.  

Pregnant women are at special risk, because the lead they absorb crosses the placenta and enters the fetus.  

It’s important to remember that there is no known safe level of lead in a human body. The US Centers for Disease Control and Prevention (CDC) has set a blood reference value at 3.5 micrograms of lead per deciliter of blood (µg/dL). This is why the District Department of Energy and Environment (DOEE) and DC Health established a special program that offers a visit to the home of families of children diagnosed with a blood lead level at 3.5 µg/dL or above. During this visit, trained staff provide education to the family about how to minimize the risk of exposure to lead, as well as some dust testing, to see whether lead-contaminated dust might be present in the home.

Related Information 

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

View of Mary at bottom of shaft inside tunnel shown from above
DC Water Launches Tunnel Boring Machine Mary, Marking Important Step for Potomac River Tunnel Project

First turn of cutterhead signals the start of excavation for the Potomac River Tunnel Project

In a defining moment for one of the District’s largest infrastructure investments, DC Water has marked its next major milestone in the Potomac River Tunnel Project. The first tunnel boring machine, Mary, has launched her northbound journey breaking through the soil to signal the start of excavation.

With the first turn of Mary’s drill-like cutterhead underground, the machine pushed forward to begin tunneling, representing the transition from years of planning and preparation to active tunnel construction on the $819 million project.

Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
April 15, 2026
Wednesday, 9:30 AM

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 50% of the last 3 payments made. Eligible participants are residential customers who have had an outstanding balance for 60 days or greater and with an outstanding balance of $500 or more.