Water Quality Report

Washington, DC (20415): PFAS Detected in Mapped Water Systems

EPA data for D.c. Water and Sewer Authority

PFAS Detected

EPA records for the water systems mapped to 20415 in Washington, DC contain 4 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources

Latest air quality, EPA records and weather alerts Current data temporarily unavailable

Current EPA violation data unavailable

Safety Score N/A

Water Quality Concerns 4 non-health-based violation records in EPA data

Lead Risk Below action level 0.002 mg/L, 90th percentile, sample period ending 2025-12-31

NFIP Claim History N/A

Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

Water EPA records for water systems mapped to this ZIP show 4 violations (non-health) (since 2021).
Lead The reported 90th-percentile lead result of 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.

Contaminant Summary

Violations on record (not health-based)

4 violations PFAS detected

Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record

Water System

632,323

People Served

Health Violations (since 2021)

Surface water

Water Source

0.002 mg/L

Reported Lead Result

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No critical alerts appear in the record for Washington (20415); the high-priority level accounts for 1 elevated-risk finding.

PFAS Detected in Water Supply HIGH

PFAS ("forever chemicals") have been detected in water systems serving this ZIP code. Highest level: 0.0047 µg/L.

What to do: Consider a water filter rated for PFAS reduction (NSF/ANSI 53 or 58). See PFAS Contamination below ↓ ↓

Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance

92/100

Observed

PFAS MCL screen

100/100

Observed

EPA radon zone

Unknown

Evidence missing

Annual EPA AirData AQI

100/100

Observed

Required domains

Drinking water

96/100

Indoor environment

Unknown

Outdoor environment

100/100

Coverage: 3 of 4 components and 2 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (7) HIGH

Your Water System

ZIP code 20415 in Washington, District of Columbia is mapped to the water system D.c. Water and Sewer Authority (EPA ID: DC0000002). This system provides water to approximately 632,323 people from surface water sources.

Other Water Quality Reports in District of Columbia

20001 (Washington) - 4 violations recorded for mapped water systems
20002 (Washington) - 4 violations recorded for mapped water systems
20003 (Washington) - 4 violations recorded for mapped water systems
20004 (Washington) - 4 violations recorded for mapped water systems
20005 (Washington) - 4 violations recorded for mapped water systems
20006 (Washington) - 4 violations recorded for mapped water systems
20007 (Washington) - 4 violations recorded for mapped water systems
20008 (Washington) - 4 violations recorded for mapped water systems
20009 (Washington) - 4 violations recorded for mapped water systems
20010 (Washington) - 4 violations recorded for mapped water systems
20011 (Washington) - 4 violations recorded for mapped water systems
20012 (Washington) - 4 violations recorded for mapped water systems
20013 (Washington)
20015 (Washington) - 4 violations recorded for mapped water systems
20016 (Washington) - 4 violations recorded for mapped water systems
20017 (Washington) - 4 violations recorded for mapped water systems
20018 (Washington) - 4 violations recorded for mapped water systems
20019 (Washington) - 4 violations recorded for mapped water systems
20020 (Washington) - 4 violations recorded for mapped water systems
20022 (Washington)

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for D.c. Water and Sewer Authority (DC0000002) on EPA.gov.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 20415.

Detected compounds: PFPeA, PFHxA.

Highest measured level: 0.0047 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

Learn about PFAS risks → Find a PFAS filter →

📊 EPA UCMR5 · View source →

Environmental Hazards (8) CRITICAL

Home & Infrastructure (2) OK

Cost & Community (5) OK

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Frequently Asked Questions

Is the tap water in 20415 safe to drink?

EPA SDWIS records 4 violations since 2021 across the water systems mapped to ZIP 20415 (primary system: D.c. Water and Sewer Authority), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 20415's water come from?

The recorded water source for D.c. Water and Sewer Authority, a system mapped to ZIP code 20415, is Surface water. This system serves approximately 632,323 people.

How can I get my water tested in Washington?

If D.c. Water and Sewer Authority supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 20415 tap water?

The Lead and Copper Rule record selected for 20415 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

Are there PFAS (forever chemicals) in 20415's water?

Yes, PFAS have been detected in samples from water systems mapped to 20415. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

How to cite this page

APA ZipCheckup. (2026). Washington, DC (20415): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/20415/

BibTeX

@misc{zipcheckup-report-20415,
  author = {{ZipCheckup}},
  title  = {{Washington, DC (20415): PFAS Detected in Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/20415/}
}

Page version: October 2026.

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