Skip to main content
💧 TapWaterData
Home/Utilities/Maryland/D.C. WATER AND SEWER AUTHORITY

D.C. WATER AND SEWER AUTHORITY

Drinking water quality, contact, and Consumer Confidence Report

Serving 143 cities in DC, MD, VA · PWSID DC0000002

D.C. WATER AND SEWER AUTHORITY serves 632,323 people. See EPA records and contact info below.

Monitor
2 above health guidelines
People served
632,323

Data sources: EPA SDWIS, D.C. WATER AND SEWER AUTHORITY's published Consumer Confidence Report, Maryland Department of Environmental Protection.

This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.

632K
People Served
143
Cities
1
Water Sources
0
MCL Violations

Official D.C. WATER AND SEWER AUTHORITY Resources

D.C. WATER AND SEWER AUTHORITY Service Area

Loading map...

Service Area

This map shows the approximate service area for D.C. WATER AND SEWER AUTHORITY. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

D.C. WATER AND SEWER AUTHORITY Water Quality Grade

B
Good

Water quality is good with minor concerns.

Quality Score80/100
2
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is D.C. WATER AND SEWER AUTHORITY Water Safe to Drink?

D.C. WATER AND SEWER AUTHORITY has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 632,323 people across 143 cities in DC, MD, VA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

Get your water independently tested in MarylandHow does Maryland water quality rank nationally? →

D.C. WATER AND SEWER AUTHORITY Service Area

Washington, DC

19+ contaminants tested
2 above guidelines
Monitor

Adelphi, MD

19+ contaminants tested
2 above guidelines
Monitor

Ashton-Sandy Spring, MD

19+ contaminants tested
2 above guidelines
Monitor

Aspen Hill, MD

19+ contaminants tested
2 above guidelines
Monitor

Beltsville, MD

19+ contaminants tested
2 above guidelines
Monitor

Berwyn Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Bethesda, MD

19+ contaminants tested
2 above guidelines
Monitor

Bladensburg, MD

19+ contaminants tested
2 above guidelines
Monitor

Brentwood, MD

19+ contaminants tested
2 above guidelines
Monitor

Brookeville, MD

19+ contaminants tested
2 above guidelines
Monitor

Brookmont, MD

19+ contaminants tested
2 above guidelines
Monitor

Burnt Mills, MD

19+ contaminants tested
2 above guidelines
Monitor

Burtonsville, MD

19+ contaminants tested
2 above guidelines
Monitor

Cabin John, MD

19+ contaminants tested
2 above guidelines
Monitor

Calverton, MD

19+ contaminants tested
2 above guidelines
Monitor

Capitol Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Cedar Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Cheverly, MD

19+ contaminants tested
2 above guidelines
Monitor

Chevy Chase, MD

19+ contaminants tested
2 above guidelines
Monitor

Chevy Chase Section Five, MD

19+ contaminants tested
2 above guidelines
Monitor

Chevy Chase Section Three, MD

19+ contaminants tested
2 above guidelines
Monitor

Chevy Chase View, MD

19+ contaminants tested
2 above guidelines
Monitor

Chevy Chase Village, MD

19+ contaminants tested
2 above guidelines
Monitor

Chillum, MD

19+ contaminants tested
2 above guidelines
Monitor

Cloverly, MD

19+ contaminants tested
2 above guidelines
Monitor

Colesville, MD

19+ contaminants tested
2 above guidelines
Monitor

College Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Colmar Manor, MD

19+ contaminants tested
2 above guidelines
Monitor

Coral Hills, MD

19+ contaminants tested
2 above guidelines
Monitor

Cottage City, MD

19+ contaminants tested
2 above guidelines
Monitor

Darnestown, MD

19+ contaminants tested
2 above guidelines
Monitor

Derwood, MD

19+ contaminants tested
2 above guidelines
Monitor

District Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

East Riverdale, MD

19+ contaminants tested
2 above guidelines
Monitor

Edmonston, MD

19+ contaminants tested
2 above guidelines
Monitor

Fairland, MD

19+ contaminants tested
2 above guidelines
Monitor

Fairmount Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Forest Glen, MD

19+ contaminants tested
2 above guidelines
Monitor

Forest Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Four Corners, MD

19+ contaminants tested
2 above guidelines
Monitor

Friendship Heights Village, MD

19+ contaminants tested
2 above guidelines
Monitor

Gaithersburg, MD

19+ contaminants tested
2 above guidelines
Monitor

Garrett Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Glassmanor, MD

19+ contaminants tested
2 above guidelines
Monitor

Glen Echo, MD

19+ contaminants tested
2 above guidelines
Monitor

Glenarden, MD

19+ contaminants tested
2 above guidelines
Monitor

Glenmont, MD

19+ contaminants tested
2 above guidelines
Monitor

Greenbelt, MD

19+ contaminants tested
2 above guidelines
Monitor

Hillandale, MD

19+ contaminants tested
2 above guidelines
Monitor

Hillcrest Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Hyattsville, MD

19+ contaminants tested
2 above guidelines
Monitor

Kemp Mill, MD

19+ contaminants tested
2 above guidelines
Monitor

Kensington, MD

19+ contaminants tested
2 above guidelines
Monitor

Konterra, MD

19+ contaminants tested
2 above guidelines
Monitor

Landover, MD

19+ contaminants tested
2 above guidelines
Monitor

Landover Hills, MD

19+ contaminants tested
2 above guidelines
Monitor

Langley Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Lanham, MD

19+ contaminants tested
2 above guidelines
Monitor

Laurel, MD

19+ contaminants tested
2 above guidelines
Monitor

Layhill, MD

19+ contaminants tested
2 above guidelines
Monitor

Leisure World, MD

19+ contaminants tested
2 above guidelines
Monitor

Marlow Heights, MD

19+ contaminants tested
2 above guidelines
Monitor

Martin's Additions, MD

19+ contaminants tested
2 above guidelines
Monitor

Maryland Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Mount Rainier, MD

19+ contaminants tested
2 above guidelines
Monitor

National Harbor, MD

19+ contaminants tested
2 above guidelines
Monitor

New Carrollton, MD

19+ contaminants tested
2 above guidelines
Monitor

North Bethesda, MD

19+ contaminants tested
2 above guidelines
Monitor

North Brentwood, MD

19+ contaminants tested
2 above guidelines
Monitor

North Chevy Chase, MD

19+ contaminants tested
2 above guidelines
Monitor

North Kensington, MD

19+ contaminants tested
2 above guidelines
Monitor

North Potomac, MD

19+ contaminants tested
2 above guidelines
Monitor

Olney, MD

19+ contaminants tested
2 above guidelines
Monitor

Oxon Hill, MD

19+ contaminants tested
2 above guidelines
Monitor

Peppermill Village, MD

19+ contaminants tested
2 above guidelines
Monitor

Potomac, MD

19+ contaminants tested
2 above guidelines
Monitor

Redland, MD

19+ contaminants tested
2 above guidelines
Monitor

Riverdale Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Rockville, MD

19+ contaminants tested
2 above guidelines
Monitor

Seabrook, MD

19+ contaminants tested
2 above guidelines
Monitor

Seat Pleasant, MD

19+ contaminants tested
2 above guidelines
Monitor

Silver Hill, MD

19+ contaminants tested
2 above guidelines
Monitor

Silver Spring, MD

19+ contaminants tested
2 above guidelines
Monitor

Somerset, MD

19+ contaminants tested
2 above guidelines
Monitor

South Kensington, MD

19+ contaminants tested
2 above guidelines
Monitor

South Laurel, MD

19+ contaminants tested
2 above guidelines
Monitor

Spencerville, MD

19+ contaminants tested
2 above guidelines
Monitor

Springdale, MD

19+ contaminants tested
2 above guidelines
Monitor

Suitland, MD

19+ contaminants tested
2 above guidelines
Monitor

Summerfield, MD

19+ contaminants tested
2 above guidelines
Monitor

Takoma Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Temple Hills, MD

19+ contaminants tested
2 above guidelines
Monitor

Travilah, MD

19+ contaminants tested
2 above guidelines
Monitor

University Park, MD

19+ contaminants tested
2 above guidelines
Monitor

Walker Mill, MD

19+ contaminants tested
2 above guidelines
Monitor

Washington Grove, MD

19+ contaminants tested
2 above guidelines
Monitor

Wheaton, MD

19+ contaminants tested
2 above guidelines
Monitor

White Oak, MD

19+ contaminants tested
2 above guidelines
Monitor

Woodlawn, MD

19+ contaminants tested
2 above guidelines
Monitor

Alexandria, VA

19+ contaminants tested
2 above guidelines
Monitor

Arcola, VA

19+ contaminants tested
2 above guidelines
Monitor

Arlington, VA

19+ contaminants tested
2 above guidelines
Monitor

Ashburn, VA

19+ contaminants tested
2 above guidelines
Monitor

Belle Haven, VA

19+ contaminants tested
2 above guidelines
Monitor

Belmont, VA

19+ contaminants tested
2 above guidelines
Monitor

Brambleton, VA

19+ contaminants tested
2 above guidelines
Monitor

Broadlands, VA

19+ contaminants tested
2 above guidelines
Monitor

Bull Run, VA

19+ contaminants tested
2 above guidelines
Monitor

Cascades, VA

19+ contaminants tested
2 above guidelines
Monitor

Chantilly, VA

19+ contaminants tested
2 above guidelines
Monitor

Countryside, VA

19+ contaminants tested
2 above guidelines
Monitor

Difficult Run, VA

19+ contaminants tested
2 above guidelines
Monitor

Dranesville, VA

19+ contaminants tested
2 above guidelines
Monitor

Dulles Town Center, VA

19+ contaminants tested
2 above guidelines
Monitor

Dunn Loring, VA

19+ contaminants tested
2 above guidelines
Monitor

Fair Oaks, VA

19+ contaminants tested
2 above guidelines
Monitor

Falls Church, VA

19+ contaminants tested
2 above guidelines
Monitor

Floris, VA

19+ contaminants tested
2 above guidelines
Monitor

Franklin Farm, VA

19+ contaminants tested
2 above guidelines
Monitor

Great Falls, VA

19+ contaminants tested
2 above guidelines
Monitor

Great Falls Crossing, VA

19+ contaminants tested
2 above guidelines
Monitor

Herndon, VA

19+ contaminants tested
2 above guidelines
Monitor

Hutchison, VA

19+ contaminants tested
2 above guidelines
Monitor

Idylwood, VA

19+ contaminants tested
2 above guidelines
Monitor

Lansdowne, VA

19+ contaminants tested
2 above guidelines
Monitor

Loudoun Valley Estates, VA

19+ contaminants tested
2 above guidelines
Monitor

Lowes Island, VA

19+ contaminants tested
2 above guidelines
Monitor

McLean, VA

19+ contaminants tested
2 above guidelines
Monitor

McNair, VA

19+ contaminants tested
2 above guidelines
Monitor

Moorefield, VA

19+ contaminants tested
2 above guidelines
Monitor

Oak Grove, VA

19+ contaminants tested
2 above guidelines
Monitor

Oakton, VA

19+ contaminants tested
2 above guidelines
Monitor

One Loudoun, VA

19+ contaminants tested
2 above guidelines
Monitor

Pimmit Hills, VA

19+ contaminants tested
2 above guidelines
Monitor

Reston, VA

19+ contaminants tested
2 above guidelines
Monitor

South Riding, VA

19+ contaminants tested
2 above guidelines
Monitor

Sterling, VA

19+ contaminants tested
2 above guidelines
Monitor

Stone Ridge, VA

19+ contaminants tested
2 above guidelines
Monitor

Sugarland Run, VA

19+ contaminants tested
2 above guidelines
Monitor

Tysons, VA

19+ contaminants tested
2 above guidelines
Monitor

University Center, VA

19+ contaminants tested
2 above guidelines
Monitor

Vienna, VA

19+ contaminants tested
2 above guidelines
Monitor

Wolf Trap, VA

19+ contaminants tested
2 above guidelines
Monitor

Get D.C. WATER AND SEWER AUTHORITY Alerts

Water quality news, test results, and filter recommendations for your area.

Free forever. Unsubscribe anytime. We never share your email.

D.C. WATER AND SEWER AUTHORITY Contact & Information

Phone

Mailing Address

1385 Canal St SE Washington, DC 20032

B2B Contact Data

B2B Contact Data Available

Contacts for D.C. WATER AND SEWER AUTHORITY

Updated Jan 2026
Sample Preview (masked)
NameTitlePhoneEmail
J████ S████Water Treatment Supervisor(555) ███-████j████@city████.gov
M████ J██████Utility Director(555) ███-████m████@water████.org
Unlock full contact details

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

conventional

Disinfectant Used

chloramines, filtration, hypochlorite

D.C. WATER AND SEWER AUTHORITY Consumer Confidence Report

A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act §1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.

A current CCR for D.C. WATER AND SEWER AUTHORITY has not been published or validated on TapWaterData yet.

Publish your 2027 CCR

Are you the water operator here? Publish your official 2027-compliant CCR on this page — residents already find it here.

Free through launch · no credit card · cancel anytime

Residents: contact the utility directly using the phone number above, or check the EPA’s national CCR portal. Reports are typically distributed by mail or posted on the utility’s official website.

D.C. WATER AND SEWER AUTHORITY Annual Water Quality Reports

2026 Water Quality Report
Latest Consumer Confidence Report (CCR)
View Report

Historical reports are being compiled. Check back soon for archived water quality data.

What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.

Recommended Water Filters for D.C. WATER AND SEWER AUTHORITY

Based on water quality data from cities served by D.C. WATER AND SEWER AUTHORITY, we recommend NSF-certified filters that can remove contaminants above health guidelines.

Frequently Asked Questions about D.C. WATER AND SEWER AUTHORITY

Is D.C. WATER AND SEWER AUTHORITY water safe to drink?

D.C. WATER AND SEWER AUTHORITY has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports for specific water quality details.

Does D.C. WATER AND SEWER AUTHORITY have PFAS in its water?

D.C. WATER AND SEWER AUTHORITY has PFAS monitoring data on record and no PFAS compounds are currently above EPA health-based guidelines. EPA finalized new PFAS drinking-water rules in 2024 requiring ongoing monitoring through 2029.

How do I pay my D.C. WATER AND SEWER AUTHORITY water bill?

D.C. WATER AND SEWER AUTHORITY bills can be paid at the utility's official payment portal: https://www.dcwater.com/customer-center/billing-and-payments. For questions about your bill, call 202-364-3148.

How many people does D.C. WATER AND SEWER AUTHORITY serve?

D.C. WATER AND SEWER AUTHORITY serves 632,323 people across 143 cities in DC, MD, VA.

What cities does D.C. WATER AND SEWER AUTHORITY serve?

D.C. WATER AND SEWER AUTHORITY provides water service to: Washington, DC; Adelphi, MD; Ashton-Sandy Spring, MD; Aspen Hill, MD; Beltsville, MD; Berwyn Heights, MD; Bethesda, MD; Bladensburg, MD; Brentwood, MD; Brookeville, MD; Brookmont, MD; Burnt Mills, MD; Burtonsville, MD; Cabin John, MD; Calverton, MD; Capitol Heights, MD; Cedar Heights, MD; Cheverly, MD; Chevy Chase, MD; Chevy Chase Section Five, MD; Chevy Chase Section Three, MD; Chevy Chase View, MD; Chevy Chase Village, MD; Chillum, MD; Cloverly, MD; Colesville, MD; College Park, MD; Colmar Manor, MD; Coral Hills, MD; Cottage City, MD; Darnestown, MD; Derwood, MD; District Heights, MD; East Riverdale, MD; Edmonston, MD; Fairland, MD; Fairmount Heights, MD; Forest Glen, MD; Forest Heights, MD; Four Corners, MD; Friendship Heights Village, MD; Gaithersburg, MD; Garrett Park, MD; Glassmanor, MD; Glen Echo, MD; Glenarden, MD; Glenmont, MD; Greenbelt, MD; Hillandale, MD; Hillcrest Heights, MD; Hyattsville, MD; Kemp Mill, MD; Kensington, MD; Konterra, MD; Landover, MD; Landover Hills, MD; Langley Park, MD; Lanham, MD; Laurel, MD; Layhill, MD; Leisure World, MD; Marlow Heights, MD; Martin's Additions, MD; Maryland Park, MD; Mount Rainier, MD; National Harbor, MD; New Carrollton, MD; North Bethesda, MD; North Brentwood, MD; North Chevy Chase, MD; North Kensington, MD; North Potomac, MD; Olney, MD; Oxon Hill, MD; Peppermill Village, MD; Potomac, MD; Redland, MD; Riverdale Park, MD; Rockville, MD; Seabrook, MD; Seat Pleasant, MD; Silver Hill, MD; Silver Spring, MD; Somerset, MD; South Kensington, MD; South Laurel, MD; Spencerville, MD; Springdale, MD; Suitland, MD; Summerfield, MD; Takoma Park, MD; Temple Hills, MD; Travilah, MD; University Park, MD; Walker Mill, MD; Washington Grove, MD; Wheaton, MD; White Oak, MD; Woodlawn, MD; Alexandria, VA; Arcola, VA; Arlington, VA; Ashburn, VA; Belle Haven, VA; Belmont, VA; Brambleton, VA; Broadlands, VA; Bull Run, VA; Cascades, VA; Chantilly, VA; Countryside, VA; Difficult Run, VA; Dranesville, VA; Dulles Town Center, VA; Dunn Loring, VA; Fair Oaks, VA; Falls Church, VA; Floris, VA; Franklin Farm, VA; Great Falls, VA; Great Falls Crossing, VA; Herndon, VA; Hutchison, VA; Idylwood, VA; Lansdowne, VA; Loudoun Valley Estates, VA; Lowes Island, VA; McLean, VA; McNair, VA; Moorefield, VA; Oak Grove, VA; Oakton, VA; One Loudoun, VA; Pimmit Hills, VA; Reston, VA; South Riding, VA; Sterling, VA; Stone Ridge, VA; Sugarland Run, VA; Tysons, VA; University Center, VA; Vienna, VA; Wolf Trap, VA.

Does D.C. WATER AND SEWER AUTHORITY have any EPA violations?

No, D.C. WATER AND SEWER AUTHORITY has no MCL violations on record.

What is D.C. WATER AND SEWER AUTHORITY's phone number?

You can contact D.C. WATER AND SEWER AUTHORITY at 202-364-3148. Their mailing address is: 1385 Canal St SE Washington, DC 20032.

Where can I find D.C. WATER AND SEWER AUTHORITY's Consumer Confidence Report?

Community water systems must publish an annual CCR. If you're looking for D.C. WATER AND SEWER AUTHORITY's CCR, contact them at 202-364-3148 or check back here — we update monthly. The 2027 revised CCR Rule introduces new direct-URL distribution requirements.

Similar water utilities in Maryland

How we built this page

Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data — typically within days of an EPA SDWIS refresh.

Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.

Are you D.C. WATER AND SEWER AUTHORITY? Publish your 2027 CCR

TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here — it inherits this page's search authority and reaches every customer who Googles D.C. WATER AND SEWER AUTHORITY.

  • EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
  • Publish once a year. Agent-assisted workflow; no login setup for small systems.
  • Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
Claim D.C. WATER AND SEWER AUTHORITY

Free for operators. No card required. Typical setup: 5 minutes.

Spotted something off on this page?

Residents keep our data honest.

Stay Informed About Your Water Quality

Get EPA reports, filter recommendations, and safety alerts for your area.

Join 10,000+ people protecting their families. Unsubscribe anytime.