WaterVerge

Is Tysons, VA Tap Water Safe to Drink?

Graded A+ with no contaminants above EPA limits. Here's everything we tested and how Tysons ranks. What to do next ↓

828 residents served 2 water systems PWSID: MD0030018
Overall Score
95.9 / 100
Violations
None active
Last Updated
May 2026
Source
Purchased surface water
#7 of 230 in Virginia Top 2% nationally
Private
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
A+GRADE
Water Quality Grade
95.9/100
waterverge.com
A+ 95.9/100

Tysons, VA — Water Quality Report

Tysons's drinking water received a grade of A+ (95.9 out of 100), indicating excellent water quality. The city's 2 water systems serve approximately 828 residents using purchased surface water.

Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.

The system has 1 violation on record, including 0 health-based violations. All violations have been resolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Tysons's water

Tysons ranks #7 out of 230 cities in Virginia for water quality, placing it one of the best in the state.

The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.

As a small community water system, Tysons may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

Quality Breakdown

Water quality score

See methodology →
95.9 out of 100 Grade A+
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
44.9/45
A
Historical violation record including health-based and monitoring violations.
Lead & Copper
20/20
A
Lead at 0.0 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
10/10
A
Monitoring and reporting compliance with EPA regulations.
Source Risk
4/5
B
Water source: Purchased surface water.
Water Safety

Is Tysons, VA water safe to drink?

Generally Safe

Based on EPA testing data, Tysons's tap water is generally safe to drink. The water system earned a grade of A+ (95.9/100), meeting federal drinking water standards across key contaminant categories. The city's 2 water systems serve approximately 828 residents using surface water (rivers, lakes, or reservoirs).

None
Violations
0.0 ppb
Lead (90th %ile)
10 events
Disaster History

Recent water quality updates for Tysons

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Tysons's water quality assessment. Grade: A+ (95.9/100).

Violation
1 drinking water violation recorded

Contaminants: Chlorite.

Disaster
HURRICANE FLORENCE

Federal disaster declaration (FEMA DR-3403). Hurricane event — may have impacted local water infrastructure.

Disaster
HURRICANE FLORENCE

Federal disaster declaration (FEMA DR-3403). Hurricane event — may have impacted local water infrastructure.

Key contaminant findings

Based on the most recent EPA sampling data for Tysons's water supply.

Lead Within Limits
Detected: 0.0 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Violation history

Tysons's water system has 1 total violation on record, including 0 health-based violations. All violations have been resolved.

MR
Most recent violations:
Sep 2019 Chlorite Resolved

Flood & environmental risk

Fairfax County has experienced 10 federally declared disasters since 1999. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Difficult Run Above Fox Lake, S F Little Difficult Run Above Mouth Nr Vienna, Snakeden Branch Above Lake Audubon, The Glade, Difficult Run.

HURRICANE FLORENCE
Hurricane FEMA DR-3403
HURRICANE FLORENCE
Hurricane FEMA DR-3403
HURRICANE SANDY
Hurricane FEMA DR-4092

Where does Tysons's water come from?

Tysons's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 2 water systems serving approximately 828 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Difficult Run Above Fox Lake (river), S F Little Difficult Run Above Mouth Nr Vienna (river), Snakeden Branch Above Lake Audubon (river), The Glade (river), Difficult Run (river).

What Tysons residents can do

Request your utility's CCR

Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.

Monitor alerts during storms

Tysons's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.

Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.0 ppb
EPA Action Level: 15 ppb · 0% of limit
Safe Level
Compliance Record

Violation summary

1
Total violations
0
Health-based
0
Active / unresolved
Sep 2019
Most recent violation
Compliance Record

Violations & advisories

1 Total
0 Active
0 Health-based
1 Resolved
Sep 2019 Resolved
Chlorite
Monitoring & Reporting
Monitoring & Reporting Resolved Sep 2019
Industrial pollution

Top industrial polluters within 10 miles of Tysons

Industrial polluters nearby

Reported releases to surface water by facilities near Tysons, ranked by pounds discharged annually.

Total reported releases to surface water: 958 lbs

FacilityTop chemicalTo surface water (lbs/yr)Distance
VIRGINIA CONCRETE SHIRLINGTON PLANT
Nonmetallic Mineral Product · VULCAN MATERIALS CO
ARLINGTON, VA22206
Nitrate compounds (water dissociable; reportable only when in aqueous solution)3279.3 mi
VIRGINIA CONCRETE EDSALL ROAD PLANT
Nonmetallic Mineral Product · VULCAN MATERIALS CO
SPRINGFIELD, VA22151
Nitrate compounds (water dissociable; reportable only when in aqueous solution)2958.9 mi
VIRGINIA CONCRETE FALLS CHURCH PLANT
Nonmetallic Mineral Product · SMYRNA READY MIX LLC
FALLS CHURCH, VA22043
Nitrate compounds (water dissociable; reportable only when in aqueous solution)2602.8 mi
US ARMY CORPS OF ENGINEERS DALECARLIA WTP
Other · US DEPARTMENT OF DEFENSE
WASHINGTON, DC20016
Ammonia766.3 mi
TITAN VIRGINIA READY-MIX LLC-SPRINGFIELD PLANT
Nonmetallic Mineral Product · TITAN AMERICA LLC
SPRINGFIELD, VA22151
Lead And Lead Compounds09.1 mi

Source: EPA Toxic Release Inventory (TRI) 2023

Environmental Risk

Flood & disaster history

10
Declared disasters
Sep 2018
Most recent
Hurricane
Most common type

Fairfax County has experienced 10 federally declared disasters since 1999. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.

Sep 2018
HURRICANE FLORENCE
Hurricane FEMA #3403
Sep 2018
HURRICANE FLORENCE
Hurricane FEMA #3403
Nov 2012
HURRICANE SANDY
Hurricane FEMA #4092
Oct 2012
HURRICANE SANDY
Hurricane FEMA #3359
Oct 2012
HURRICANE SANDY
Hurricane FEMA #3359
Sep 2005
HURRICANE KATRINA EVACUATION
Hurricane FEMA #3240

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.0 15 ppb Inorganic Safe
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 0.0 ppb from 2022 (0.0 ppb) to 2025 (0.0 ppb).
Infrastructure

Water source & infrastructure

Primary Source
Purchased Surface Water
Operator
Private
Population Served
828
Water Systems
2
Water Source

Where Tysons's water comes from

Purchased Surface Water

Tysons's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.

These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.

The system is operated by private ownership and serves approximately 828 people through 2 water systems.

Local Hydrology

Water bodies near Tysons

Tysons is located near 5 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.

Difficult Run Above Fox Lake
river
S F Little Difficult Run Above Mouth Nr Vienna
river
Snakeden Branch Above Lake Audubon
river
The Glade
river
Difficult Run
river
Infrastructure

Water systems serving Tysons

System Name PWSID Population Source
ELKRIDGE ESTATES OF ROLAND PARK MD0030018 414 SWP
METROPOLITAN OF BALTIMORE MD0300006 414 SWP
Regional Comparison

How Tysons compares

Full Virginia rankings →

Tysons's score of 95.9/100 is above the average of 85/100 among major Virginia cities. It outscores 10 of 10 nearby cities.

Tysons (this city)
95.9
Herndon
75.5
Ashburn
87
Virginia avg
85
City Profile

About Tysons, VA

Economic Profile
$129,468
Median Income
$621,826
Median Home Value
$2,426/mo
Median Rent
5%
Unemployment
Community
36.1
Median Age
2,500
People / sq mi
80.6%
College Educated
35.8%
Homeownership
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Frequently asked questions

Is Tysons, VA tap water safe to drink?

Tysons's water quality earned a grade of A+ (95.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #7 out of 230 cities tested in Virginia.

What contaminants are in Tysons's water?

Lead was measured at 0.0 ppb (90th percentile). 1 violation is on record.

How is Tysons's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Tysons?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Tysons's water come from?

Tysons's water is sourced from Purchased surface water. The city has 2 water systems serving approximately 828 residents.

How does Tysons's water compare to other cities?

Tysons ranks #7 out of 230 cities in Virginia (better than 97% of state cities) and #258 out of 15744 cities nationally (98th percentile). The grade of A+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.