Washington, DC (20001): PFAS Detected in Mapped Water Systems
EPA data for D.c. Water and Sewer Authority
EPA records for the water systems mapped to 20001 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
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.
- Flood 33 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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Check the list below - 1 high-priority alert on file for Washington (20001), with no critical-level alerts in these records.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
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 20001 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
- 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)
- 20023 (Washington)
Nearby Water Quality Reports
- 20060 (Washington) - <1 mi
- 20417 (Washington) - <1 mi
- 20055 (Washington) - <1 mi
- 20536 (Washington) - <1 mi
- 20420 (Washington) - <1 mi
- 20005 (Washington) - <1 mi - 4 violations recorded for mapped water systems
- 20023 (Washington) - <1 mi
- 20548 (Washington) - <1 mi
- 20404 (Washington) - 1 mi
- 20529 (Washington) - 1 mi
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.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 20001.
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.
Environmental Hazards (10) CRITICAL
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Washington
Based on local data for ZIP 20001, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Washington has 33 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 20001 was built around 1983. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Washington is 1983; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 20001 safe to drink?
EPA SDWIS records 4 violations since 2021 across the water systems mapped to ZIP 20001 (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 20001's water come from?
The recorded water source for D.c. Water and Sewer Authority, a system mapped to ZIP code 20001, 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 20001 tap water?
The Lead and Copper Rule record selected for 20001 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 20001's water?
Yes, PFAS have been detected in samples from water systems mapped to 20001. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 20001?
FEMA records contain 33 flood insurance claims filed in ZIP code 20001; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Washington, DC (20001): PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/20001/
@misc{zipcheckup-report-20001,
author = {{ZipCheckup}},
title = {{Washington, DC (20001): PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/20001/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 20001
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 20060 | Washington, DC | <1 mi | N/A | 0 |
| 20417 | Washington, DC | <1 mi | N/A | 0 |
| 20055 | Washington, DC | <1 mi | N/A | 0 |
| 20536 | Washington, DC | <1 mi | N/A | 0 |
| 20420 | Washington, DC | <1 mi | N/A | 0 |
| 20005 | Washington, DC | <1 mi | N/A | 4 |
| 20023 | Washington, DC | <1 mi | N/A | 0 |
| 20548 | Washington, DC | 1.0 mi | N/A | 0 |
| 20404 | Washington, DC | 1.0 mi | N/A | 0 |
| 20529 | Washington, DC | 1.0 mi | N/A | 0 |
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