Water Quality in Ashburn, VA: 1 Water-System Violation on Record
1 water system · 2 directly mapped ZIP records
Available EPA records report 1 violations across 2 directly mapped ZIP records with known counts for Ashburn. This is compliance evidence, not a property-level tap-water verdict.
Data: EPA Safe Drinking Water Information System (SDWIS)
Water Quality by ZIP Code in Ashburn
This table shows typed EPA water evidence only. Missing violation counts are displayed as N/A, not zero.
| ZIP Code | Violations | Health | |
|---|---|---|---|
| 20147 | 1 | 0 | View report → |
| 20148 | 1 | 0 | View report → |
Water Quality Overview
Ashburn, Virginia has directly mapped EPA water-system data for 2 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.
The available EPA records report 1 violation (all classified as monitoring/reporting type in the available record) across 2 directly mapped ZIP records with reported counts.
Lead Levels
The average of the reported 90th-percentile lead results across the ZIP codes of Ashburn is 0.0005 mg/L; the EPA action level of 0.015 mg/L applies to a water system's own 90th-percentile result and is not a safety threshold (EPA's health goal for lead is zero). No exceedances appear among the 2 ZIP records with known lead status.
Water Systems Serving Ashburn
Ashburn is served by 1 community water system regulated under the Safe Drinking Water Act. About 130,622 people live in the area (5 ZIP codes, Census); this is not the systems' reported service population.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
EPA records list 8 enforcement actions against water systems serving Ashburn. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Ashburn
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history
Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Ashburn Water Systems
The following contaminants have been detected or caused violations across Ashburn's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 2 | 2 | No |
The standard column shows the EPA Maximum Contaminant Level (MCL) except for lead and copper, whose value is an action level that triggers corrective steps and is not an MCL. Health-based violations are MCL, MRDL and treatment-technique violations.
EPA Enforcement History
The EPA and state regulators have taken 4 enforcement actions against water systems serving Ashburn. Recent actions:
| Date | Action Type |
|---|---|
| 2024-07-01 | State Informal Action |
| 2024-06-25 | State Order Extension |
| 2023-10-27 | State Filed Judgment |
| 2023-10-27 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-07-01.
Ashburn vs. Nearby Virginia Cities
How Ashburn's water quality compares to similar cities in Virginia:
| City | Direct EPA ZIPs | Violations | Systems | Population |
|---|---|---|---|---|
| Ashburn | 2 | 1 | 1 | 130,622 |
| Charlottesville | 6 | 4 | 7 | 126,023 |
| Hampton | 9 | 3 | 2 | 138,755 |
| Falls Church | 5 | 0 | 3 | 122,171 |
Common Questions About Ashburn Water
These are the most common questions residents search for about water quality in Ashburn, Virginia:
Is Ashburn water hard or soft? Water hardness varies by source. Ashburn's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Ashburn tap water? City-level EPA records cannot determine safety at a specific tap. No health-based violations are recorded across 2 directly mapped ZIP records with known counts, but this is not a property-level safety guarantee.
What is the best water filter for Ashburn? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Ashburn vs. Virginia Average
Understanding how Ashburn compares to the broader Virginia average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within Ashburn.
ZIP Codes in Ashburn
Ashburn spans 5 ZIP codes. EPA water-system coverage is available for 2 directly mapped ZIP codes. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Source reporting periods vary. See each cited source for its publication schedule.