Simple Things You Can Do To Improve Water Quality in Your Home

When water flows from the treatment plant to your tap, many factors in the distribution system and household plumbing can affect your water quality. Follow these tips to ensure the quality of the water that flows through the mains remains the same as it flows from your tap. Learn more by reading our Household Water Quality Guide.

Flushing

Run cold water taps for two minutes before using water for drinking and cooking. When water hasn't been used for several hours and sits in your pipes for long periods of time, water quality can decline. Instead of running your taps, other household water usage activities are effective methods for flushing pipes and allowing water from the distribution system to enter household pipes. This includes laundry, showering, flushing the toilet and running the dishwasher.

Cold Water Use

Do not use hot tap water for drinking and cooking. Hot water dissolves contaminants and may contain metals, sediment and bacteria that build up in the water heater. If you have household lead sources, hot water can cause lead to release in your drinking water.

Water Filters

Routinely replace filter cartridges. Bacteria and metals can build up in filter cartridges. Be sure to follow the manufacturer's instructions for filter replacement. Click here for guidance on filtering your drinking water at home.

Household Plumbing

Replace old household plumbing and potential lead sources. Replace galvanized plumbing with copper pipes and install "lead-free" plumbing fixtures that contain 0.25 percent lead or less. After installation, flush cold water taps for five minutes once a day for three days. Read our guide to identifying household plumbing for more information.

Faucet Aerators

Routinely clean faucet aerators and replace them as needed. Sediment and metals can collect in the aerator screen located at the tip of your faucets.

Water Heaters

Drain your water heater annually. Sediment, bacteria and metals can build up in the water heater tank. This can impact household water quality and water pressure. 

Download our guides below!

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

DC Water Officials with NPS and ANC commissioners doing ceremonial groundbreaking
DC Water Breaks Ground on Piney Branch Tunnel, Final Phase of DC Clean Rivers Project

Today, DC Water broke ground on the Piney Branch Tunnel, the final major tunnel in our Clean Rivers Project. This work will help keep sewage and trash out of local waterways and make Rock Creek, the Potomac River, and the Chesapeake Bay cleaner for our community.

When we finish the Piney Branch Tunnel, it will hold at least 4.2 million gallons of rainwater and wastewater during heavy storms. Instead of overflowing into Piney Branch, that water will go to the Blue Plains Water Resource Recovery Facility, where it will be treated.

Latest Blog Post
Five photos from the American Water Works Association (AWWA) ACE26 conference featuring panel discussions, technical presentations, networking, and attendees posing at the ACE26 display.
ACE26 Highlights: How DC Water Advanced the Conversation on Water
More than 80 DC Water employees joined thousands of water professionals in Washington, D.C., sharing expertise, building partnerships and advancing conversations that will help shape the future of water.
Upcoming Meeting
Date
July 23, 2026
Thursday, 9:30 AM

Upcoming Events

Jul 23
Jul 25

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.