D.c. Water and Sewer Authority
EPA ID: DC0000002 · 632,323 people served · 36 ZIP codes
ZipCheckup's reading of EPA SDWIS for D.c. Water and Sewer Authority (DC0000002): 4 EPA violations in the last five years. Records for D.c. Water and Sewer Authority show 4 violations over the monitored period, with every finding addressed and officially closed - the provider, which serves approximately 632,323 people, carries no outstanding enforcement actions in the current EPA dataset and meets all applicable drinking water requirements.
Data: EPA SDWIS
Service Area Map
Coverage area for D.c. Water and Sewer Authority Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The D.c. Water and Sewer Authority serves a community with a median household income of $111,110 and an estimated 671,781 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 35% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
D.c. Water and Sewer Authority's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How D.c. Water and Sewer Authority compares to EPA limits
What This Means For You
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
E. coli at 2 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 74 detections recorded.
E. coli was detected in this water system. UV disinfection (99.99%) filtration can reduce exposure.
Find a certified water filter →Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
D.c. Water and Sewer Authority (EPA ID: DC0000002) is a community water system in District of Columbia that serves approximately 632,323 people from surface water sources.
This system provides water to 36 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 4 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2023 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| January 1, 2023 | E. coli | Non-health-based | Resolved |
| December 1, 2022 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| December 1, 2022 | E. coli | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| E. coli | Microbiological | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by DC or modeled from parcel and building-footprint data.
This system serves 36 ZIP codes:
20001 · 20002 · 20003 · 20004 · 20005 20006 · 20007 · 20008 · 20009 · 20010 20011 · 20012 · 20015 · 20016 · 20017 20018 · 20019 · 20020 · 20024 · 20032 20036 · 20037 · 20052 · 20057 · 20059 20064 · 20240 · 20260 · 20317 · 20319 20373 · 20388 · 20415 · 20422 · 20542 20566
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for D.c. Water and Sewer Authority (DC0000002) on EPA.gov.
Frequently Asked Questions
Is D.c. Water and Sewer Authority water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for D.c. Water and Sewer Authority; its 4 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does D.c. Water and Sewer Authority serve?
D.c. Water and Sewer Authority serves approximately 632,323 people across 36 ZIP codes in District of Columbia.
Where does D.c. Water and Sewer Authority get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). D.c. Water and Sewer Authority (DC): 4 EPA Violations. https://zipcheckup.com/water-system/dc0000002/
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title = {{D.c. Water and Sewer Authority (DC): 4 EPA Violations}},
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url = {https://zipcheckup.com/water-system/dc0000002/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
D.c. Water and Sewer Authority (EPA ID: DC0000002) - request the latest Consumer Confidence Report or ask about specific contaminants.