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WaterSafeCheck

Washington, DC Tap Water Quality

Water safety reports for all 274 ZIP codes in Washington, District of Columbia

Average Score

69/100

Health Violations

1644

ZIP Codes

274

High Lead Risk

17

of 274 ZIP codes

C

About Tap Water in Washington, DC

Water quality in Washington, DC is currently rated with a moderate C grade (average score: 69/100 across 274 ZIP codes). This rating indicates that while the water provided by D.c. Water and Sewer Authority is treated and regulated, there have been notable compliance issues or contaminant detections recently. Residents should stay informed about the specific challenges affecting their local supply.

The accumulation of 1644 health-based violations over the past 5 years highlights systemic challenges within Washington's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by District of Columbia Water and Sewer Authority. The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 17 out of 274 ZIP codes in Washington are rated as High or Very High risk for lead. This risk is often driven by aging homes with pre-1986 plumbing containing lead solder or service lines. Families in these areas should test their tap water and consider NSF/ANSI 53 certified filters.

⚠ Lead Risk Alert: Some ZIP codes in Washington are rated High or Very High for lead exposure risk based on EPA data. Search your specific ZIP code for a detailed lead level report.

Health-Based Contaminant Violations in Washington

EPA records indicate that the following contaminants have exceeded Safe Drinking Water Act Maximum Contaminant Levels (MCLs) in Washington water systems over the past 5 years.

Consumer Confidence Report RuleE. coliHaloacetic Acids (HAA5)

Note: The presence of a past violation does not necessarily mean current water is unsafe. Utilities are required to take corrective action. Review your Consumer Confidence Report for the latest status.

Water Quality by ZIP Code — Washington, DC

Click any ZIP code for the full water quality report

B
20003

Washington, DC

Score: 72/1006 violations
B
20004

Washington, DC

Score: 72/1006 violations
B
20005

Washington, DC

Score: 72/1006 violations
B
20006

Washington, DC

Score: 72/1006 violations
B
20024

Washington, DC

Score: 72/1006 violations
B
20027

Washington, DC

Score: 72/1006 violations
B
20032

Washington, DC

Score: 72/1006 violations
B
20036

Washington, DC

Score: 72/1006 violations
B
20037

Washington, DC

Score: 72/1006 violations
B
20230

Washington, DC

Score: 72/1006 violations
B
20310

Washington, DC

Score: 72/1006 violations
B
20330

Washington, DC

Score: 72/1006 violations
B
20405

Washington, DC

Score: 72/1006 violations
B
20470

Washington, DC

Score: 72/1006 violations
B
20515

Washington, DC

Score: 72/1006 violations
B
20520

Washington, DC

Score: 72/1006 violations
B
20530

Washington, DC

Score: 72/1006 violations
C
20013

Washington, DC

Score: 69/1006 violations
C
20022

Washington, DC

Score: 69/1006 violations
C
20023

Washington, DC

Score: 69/1006 violations
C
20026

Washington, DC

Score: 69/1006 violations
C
20029

Washington, DC

Score: 69/1006 violations
C
20030

Washington, DC

Score: 69/1006 violations
C
20033

Washington, DC

Score: 69/1006 violations
C
20035

Washington, DC

Score: 69/1006 violations
C
20038

Washington, DC

Score: 69/1006 violations
C
20039

Washington, DC

Score: 69/1006 violations
C
20040

Washington, DC

Score: 69/1006 violations
C
20041

Washington, DC

Score: 69/1006 violations
C
20042

Washington, DC

Score: 69/1006 violations
C
20043

Washington, DC

Score: 69/1006 violations
C
20044

Washington, DC

Score: 69/1006 violations
C
20045

Washington, DC

Score: 69/1006 violations
C
20046

Washington, DC

Score: 69/1006 violations
C
20047

Washington, DC

Score: 69/1006 violations
C
20049

Washington, DC

Score: 69/1006 violations
C
20050

Washington, DC

Score: 69/1006 violations
C
20051

Washington, DC

Score: 69/1006 violations
C
20052

Washington, DC

Score: 69/1006 violations
C
20053

Washington, DC

Score: 69/1006 violations
C
20055

Washington, DC

Score: 69/1006 violations
C
20056

Washington, DC

Score: 69/1006 violations
C
20057

Washington, DC

Score: 69/1006 violations
C
20058

Washington, DC

Score: 69/1006 violations
C
20059

Washington, DC

Score: 69/1006 violations
C
20060

Washington, DC

Score: 69/1006 violations
C
20061

Washington, DC

Score: 69/1006 violations
C
20062

Washington, DC

Score: 69/1006 violations
C
20063

Washington, DC

Score: 69/1006 violations
C
20064

Washington, DC

Score: 69/1006 violations
C
20065

Washington, DC

Score: 69/1006 violations
C
20066

Washington, DC

Score: 69/1006 violations
C
20067

Washington, DC

Score: 69/1006 violations
C
20068

Washington, DC

Score: 69/1006 violations
C
20069

Washington, DC

Score: 69/1006 violations
C
20070

Washington, DC

Score: 69/1006 violations
C
20071

Washington, DC

Score: 69/1006 violations
C
20073

Washington, DC

Score: 69/1006 violations
C
20074

Washington, DC

Score: 69/1006 violations
C
20075

Washington, DC

Score: 69/1006 violations
C
20076

Washington, DC

Score: 69/1006 violations
C
20077

Washington, DC

Score: 69/1006 violations
C
20078

Washington, DC

Score: 69/1006 violations
C
20080

Washington, DC

Score: 69/1006 violations
C
20081

Washington, DC

Score: 69/1006 violations
C
20082

Washington, DC

Score: 69/1006 violations
C
20088

Washington, DC

Score: 69/1006 violations
C
20090

Washington, DC

Score: 69/1006 violations
C
20091

Washington, DC

Score: 69/1006 violations
C
20097

Washington, DC

Score: 69/1006 violations
C
20098

Washington, DC

Score: 69/1006 violations
C
20201

Washington, DC

Score: 69/1006 violations
C
20202

Washington, DC

Score: 69/1006 violations
C
20203

Washington, DC

Score: 69/1006 violations
C
20204

Washington, DC

Score: 69/1006 violations
C
20206

Washington, DC

Score: 69/1006 violations
C
20207

Washington, DC

Score: 69/1006 violations
C
20208

Washington, DC

Score: 69/1006 violations
C
20210

Washington, DC

Score: 69/1006 violations
C
20211

Washington, DC

Score: 69/1006 violations
C
20212

Washington, DC

Score: 69/1006 violations
C
20213

Washington, DC

Score: 69/1006 violations
C
20214

Washington, DC

Score: 69/1006 violations
C
20215

Washington, DC

Score: 69/1006 violations
C
20216

Washington, DC

Score: 69/1006 violations
C
20217

Washington, DC

Score: 69/1006 violations
C
20218

Washington, DC

Score: 69/1006 violations
C
20219

Washington, DC

Score: 69/1006 violations
C
20220

Washington, DC

Score: 69/1006 violations
C
20221

Washington, DC

Score: 69/1006 violations
C
20222

Washington, DC

Score: 69/1006 violations
C
20223

Washington, DC

Score: 69/1006 violations
C
20224

Washington, DC

Score: 69/1006 violations
C
20226

Washington, DC

Score: 69/1006 violations
C
20227

Washington, DC

Score: 69/1006 violations
C
20228

Washington, DC

Score: 69/1006 violations
C
20229

Washington, DC

Score: 69/1006 violations
C
20232

Washington, DC

Score: 69/1006 violations
C
20233

Washington, DC

Score: 69/1006 violations
C
20235

Washington, DC

Score: 69/1006 violations
C
20237

Washington, DC

Score: 69/1006 violations
C
20238

Washington, DC

Score: 69/1006 violations
C
20239

Washington, DC

Score: 69/1006 violations
C
20240

Washington, DC

Score: 69/1006 violations
C
20241

Washington, DC

Score: 69/1006 violations
C
20242

Washington, DC

Score: 69/1006 violations
C
20244

Washington, DC

Score: 69/1006 violations
C
20245

Washington, DC

Score: 69/1006 violations
C
20250

Washington, DC

Score: 69/1006 violations
C
20251

Washington, DC

Score: 69/1006 violations
C
20252

Washington, DC

Score: 69/1006 violations
C
20254

Washington, DC

Score: 69/1006 violations
C
20260

Washington, DC

Score: 69/1006 violations
C
20261

Washington, DC

Score: 69/1006 violations
C
20262

Washington, DC

Score: 69/1006 violations
C
20265

Washington, DC

Score: 69/1006 violations
C
20266

Washington, DC

Score: 69/1006 violations
C
20268

Washington, DC

Score: 69/1006 violations
C
20270

Washington, DC

Score: 69/1006 violations
C
20277

Washington, DC

Score: 69/1006 violations
C
20289

Washington, DC

Score: 69/1006 violations
C
20299

Washington, DC

Score: 69/1006 violations
C
20301

Washington, DC

Score: 69/1006 violations
C
20303

Washington, DC

Score: 69/1006 violations
C
20306

Washington, DC

Score: 69/1006 violations
C
20307

Washington, DC

Score: 69/1006 violations
C
20314

Washington, DC

Score: 69/1006 violations
C
20317

Washington, DC

Score: 69/1006 violations
C
20318

Washington, DC

Score: 69/1006 violations
C
20319

Washington, DC

Score: 69/1006 violations
C
20340

Washington, DC

Score: 69/1006 violations
C
20350

Washington, DC

Score: 69/1006 violations
C
20355

Washington, DC

Score: 69/1006 violations
C
20370

Washington, DC

Score: 69/1006 violations
C
20372

Washington, DC

Score: 69/1006 violations
C
20375

Washington, DC

Score: 69/1006 violations
C
20380

Washington, DC

Score: 69/1006 violations
C
20389

Washington, DC

Score: 69/1006 violations
C
20390

Washington, DC

Score: 69/1006 violations
C
20392

Washington, DC

Score: 69/1006 violations
C
20393

Washington, DC

Score: 69/1006 violations
C
20394

Washington, DC

Score: 69/1006 violations
C
20395

Washington, DC

Score: 69/1006 violations
C
20401

Washington, DC

Score: 69/1006 violations
C
20402

Washington, DC

Score: 69/1006 violations
C
20403

Washington, DC

Score: 69/1006 violations
C
20404

Washington, DC

Score: 69/1006 violations
C
20406

Washington, DC

Score: 69/1006 violations
C
20407

Washington, DC

Score: 69/1006 violations
C
20408

Washington, DC

Score: 69/1006 violations
C
20409

Washington, DC

Score: 69/1006 violations
C
20410

Washington, DC

Score: 69/1006 violations
C
20411

Washington, DC

Score: 69/1006 violations
C
20412

Washington, DC

Score: 69/1006 violations
C
20413

Washington, DC

Score: 69/1006 violations
C
20414

Washington, DC

Score: 69/1006 violations
C
20415

Washington, DC

Score: 69/1006 violations
C
20416

Washington, DC

Score: 69/1006 violations
C
20417

Washington, DC

Score: 69/1006 violations
C
20418

Washington, DC

Score: 69/1006 violations
C
20419

Washington, DC

Score: 69/1006 violations
C
20420

Washington, DC

Score: 69/1006 violations
C
20421

Washington, DC

Score: 69/1006 violations
C
20422

Washington, DC

Score: 69/1006 violations
C
20423

Washington, DC

Score: 69/1006 violations
C
20424

Washington, DC

Score: 69/1006 violations
C
20425

Washington, DC

Score: 69/1006 violations
C
20426

Washington, DC

Score: 69/1006 violations
C
20427

Washington, DC

Score: 69/1006 violations
C
20428

Washington, DC

Score: 69/1006 violations
C
20429

Washington, DC

Score: 69/1006 violations
C
20431

Washington, DC

Score: 69/1006 violations
C
20433

Washington, DC

Score: 69/1006 violations
C
20434

Washington, DC

Score: 69/1006 violations
C
20435

Washington, DC

Score: 69/1006 violations
C
20436

Washington, DC

Score: 69/1006 violations
C
20437

Washington, DC

Score: 69/1006 violations
C
20439

Washington, DC

Score: 69/1006 violations
C
20440

Washington, DC

Score: 69/1006 violations
C
20441

Washington, DC

Score: 69/1006 violations
C
20442

Washington, DC

Score: 69/1006 violations
C
20444

Washington, DC

Score: 69/1006 violations
C
20447

Washington, DC

Score: 69/1006 violations
C
20451

Washington, DC

Score: 69/1006 violations
C
20453

Washington, DC

Score: 69/1006 violations
C
20456

Washington, DC

Score: 69/1006 violations
C
20460

Washington, DC

Score: 69/1006 violations
C
20463

Washington, DC

Score: 69/1006 violations
C
20468

Washington, DC

Score: 69/1006 violations
C
20469

Washington, DC

Score: 69/1006 violations
C
20472

Washington, DC

Score: 69/1006 violations
C
20500

Washington, DC

Score: 69/1006 violations
C
20501

Washington, DC

Score: 69/1006 violations
C
20502

Washington, DC

Score: 69/1006 violations
C
20503

Washington, DC

Score: 69/1006 violations
C
20504

Washington, DC

Score: 69/1006 violations
C
20505

Washington, DC

Score: 69/1006 violations
C
20506

Washington, DC

Score: 69/1006 violations
C
20507

Washington, DC

Score: 69/1006 violations
C
20508

Washington, DC

Score: 69/1006 violations
C
20509

Washington, DC

Score: 69/1006 violations
C
20510

Washington, DC

Score: 69/1006 violations
C
20511

Washington, DC

Score: 69/1006 violations
C
20521

Washington, DC

Score: 69/1006 violations
C
20522

Washington, DC

Score: 69/1006 violations
C
20523

Washington, DC

Score: 69/1006 violations
C
20524

Washington, DC

Score: 69/1006 violations
C
20525

Washington, DC

Score: 69/1006 violations
C
20526

Washington, DC

Score: 69/1006 violations
C
20527

Washington, DC

Score: 69/1006 violations
C
20528

Washington, DC

Score: 69/1006 violations
C
20529

Washington, DC

Score: 69/1006 violations
C
20531

Washington, DC

Score: 69/1006 violations
C
20532

Washington, DC

Score: 69/1006 violations
C
20533

Washington, DC

Score: 69/1006 violations
C
20534

Washington, DC

Score: 69/1006 violations
C
20535

Washington, DC

Score: 69/1006 violations
C
20536

Washington, DC

Score: 69/1006 violations
C
20537

Washington, DC

Score: 69/1006 violations
C
20538

Washington, DC

Score: 69/1006 violations
C
20539

Washington, DC

Score: 69/1006 violations
C
20540

Washington, DC

Score: 69/1006 violations
C
20541

Washington, DC

Score: 69/1006 violations
C
20542

Washington, DC

Score: 69/1006 violations
C
20543

Washington, DC

Score: 69/1006 violations
C
20544

Washington, DC

Score: 69/1006 violations
C
20546

Washington, DC

Score: 69/1006 violations
C
20547

Washington, DC

Score: 69/1006 violations
C
20548

Washington, DC

Score: 69/1006 violations
C
20549

Washington, DC

Score: 69/1006 violations
C
20551

Washington, DC

Score: 69/1006 violations
C
20552

Washington, DC

Score: 69/1006 violations
C
20553

Washington, DC

Score: 69/1006 violations
C
20554

Washington, DC

Score: 69/1006 violations
C
20555

Washington, DC

Score: 69/1006 violations
C
20557

Washington, DC

Score: 69/1006 violations
C
20558

Washington, DC

Score: 69/1006 violations
C
20559

Washington, DC

Score: 69/1006 violations
C
20560

Washington, DC

Score: 69/1006 violations
C
20565

Washington, DC

Score: 69/1006 violations
C
20566

Washington, DC

Score: 69/1006 violations
C
20570

Washington, DC

Score: 69/1006 violations
C
20571

Washington, DC

Score: 69/1006 violations
C
20572

Washington, DC

Score: 69/1006 violations
C
20573

Washington, DC

Score: 69/1006 violations
C
20575

Washington, DC

Score: 69/1006 violations
C
20576

Washington, DC

Score: 69/1006 violations
C
20577

Washington, DC

Score: 69/1006 violations
C
20578

Washington, DC

Score: 69/1006 violations
C
20579

Washington, DC

Score: 69/1006 violations
C
20580

Washington, DC

Score: 69/1006 violations
C
20581

Washington, DC

Score: 69/1006 violations
C
20585

Washington, DC

Score: 69/1006 violations
C
20586

Washington, DC

Score: 69/1006 violations
C
20590

Washington, DC

Score: 69/1006 violations
C
20591

Washington, DC

Score: 69/1006 violations
C
20593

Washington, DC

Score: 69/1006 violations
C
20594

Washington, DC

Score: 69/1006 violations
C
20597

Washington, DC

Score: 69/1006 violations
C
20599

Washington, DC

Score: 69/1006 violations
C
20001

Washington, DC

Score: 67/1006 violations
C
20002

Washington, DC

Score: 67/1006 violations
C
20008

Washington, DC

Score: 67/1006 violations
C
20009

Washington, DC

Score: 67/1006 violations
C
20010

Washington, DC

Score: 67/1006 violations
C
20011

Washington, DC

Score: 67/1006 violations
C
20012

Washington, DC

Score: 67/1006 violations
C
20015

Washington, DC

Score: 67/1006 violations
C
20016

Washington, DC

Score: 67/1006 violations
C
20017

Washington, DC

Score: 67/1006 violations
C
20018

Washington, DC

Score: 67/1006 violations
C
20020

Washington, DC

Score: 67/1006 violations
C
20007

Washington, DC

Score: 62/1006 violations
C
20019

Washington, DC

Score: 62/1006 violations

Frequently Asked Questions — Washington Water Quality

Is tap water safe to drink in Washington, DC?+
Tap water in Washington has a grade of C, indicating compliance concerns in recent years. Families with young children or pregnant women should consider using a certified NSF/ANSI 53 water filter for drinking and cooking.
What is the water quality score for Washington?+
The average water quality score across 274 ZIP codes in Washington, DC is 69/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Washington have lead in its tap water?+
17 out of 274 ZIP codes in Washington are rated High or Very High for lead exposure risk. Older homes built before 1986 may have lead service lines or plumbing fixtures. Residents should run their tap for 30 seconds before use and consider a certified NSF/ANSI 53 lead filter.
How do I get the water quality report for Washington?+
Each ZIP code in Washington has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Washington's tap water come from?+
Tap water in Washington, DC primarily comes from surface water. Surface water systems treat water from rivers, lakes, or reservoirs using filtration, sedimentation, and disinfection before it reaches your tap.

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