What contaminants are in Vienna's water?

Vienna's water utility tests for 34 different contaminants. Currently, 4 contaminants are above EPA MCLGs. You can view detailed information about each contaminant, including test results, health effects, and comparisons to EPA MCLGs in the sections above.

Do I need a water filter in Vienna?

Yes, we recommend using a water filter in Vienna. With 4 contaminants above EPA MCLGs, a certified water filter can reduce your exposure to these substances. Look for filters certified for NSF-53 (health effects) or NSF-58 (reverse osmosis) that specifically remove the contaminants found in your water.

Does Vienna have any water quality violations?

D.C. WATER AND SEWER AUTHORITY currently has no reported Maximum Contaminant Level (MCL) violations, meaning the water meets all federal legal limits. However, health-based guidelines are often more protective than legal limits, which is why we compare test results to EPA MCLG Levels on this page.

Why does Vienna's water taste like chlorine?

D.C. WATER AND SEWER AUTHORITY uses chloramines, filtration, hypochlorite to disinfect the water and kill harmful bacteria and viruses. While chlorine is essential for public health, it can affect the taste and smell of your water. A simple activated carbon filter (like a pitcher filter or faucet mount) can effectively remove chlorine and improve taste.

Is Vienna's water hard or soft?

Vienna's water has 117 PPM average hardness. Soft water is generally easier on plumbing and appliances, and requires less soap for cleaning.

What are the main contaminants in Vienna tap water?

The main contaminants of concern in Vienna's tap water include Bromodichloromethane, Dichloroacetic Acid (DCA). These substances were found above EPA health-based guidelines. You can view detailed information about each contaminant, including health effects and recommended filters, in the contaminants section above.

Can you drink tap water in Vienna?

While you can technically drink tap water in Vienna as it meets legal requirements, 4 contaminants are above EPA health guidelines. We recommend using a certified water filter for optimal protection, especially for vulnerable individuals.

How often is Vienna's water tested?

D.C. WATER AND SEWER AUTHORITY is required by federal law to test water quality regularly. The frequency depends on the contaminant - some are tested daily (like bacteria), while others are tested monthly, quarterly, or annually. The test results shown on this page are from the most recent testing period reported to the EPA.

Where does Vienna's tap water come from?

Vienna's drinking water comes from surface water purchased. Surface water sources include rivers, lakes, and reservoirs, which require more extensive treatment to remove sediments and potential contaminants. The utility treats this water using conventional before distribution.

What is the overall water quality in Vienna?

Vienna has 4 contaminants above EPA health guidelines (MCLGs) out of 34+ tested. While meeting federal legal limits (MCLs), the presence of contaminants above health-based guidelines suggests that using a certified water filter could provide additional protection, especially for sensitive populations.

What are the most common contaminants detected in Vienna water?

The most commonly detected contaminants in Vienna water include: Bromodichloromethane, Dichloroacetic Acid (DCA), Orthophosphate (as P), pH, Bromochloroacetic acid. Of these, 4 exceed EPA health guidelines. These contaminants are regularly monitored by D.C. WATER AND SEWER AUTHORITY and reported to the EPA. View the detailed contaminant section above for specific levels and health information.

Vienna Tap Water Quality Report

Vienna's water has 4 contaminants above EPA MCLGs. We recommend using a certified water filter.

Utilities

2 Utilities

People Served

662,323

MCL Violations

Last Updated

2025-10-10

Is Vienna Tap Water Safe to Drink?

Vienna's water has 4 contaminants above EPA health-based guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Vienna's water.

The data below shows test results from 2 water utilities serving 662,323 people in the Vienna area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2025-10-10.

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Vienna Water Service Areas

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Recommended Water Filters for Vienna

Based on Vienna's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.

Our Pick

EDITOR'S CHOICE

BEST BUDGET

Culligan

ZeroWater

24.99

NSF Certified:

NSF-42

NSF-53

NSF-401

NSF-372

Flow Rate

1.9 gpm

Daily Production

1 gpd

Removes 19 contaminants:

Nitrate, Copper, Zinc, Barium, Sulfate +14 more

View Details

Best Value

EDITOR'S CHOICE

BEST BUDGET

Santevia

19.99

NSF Certified:

NSF-42

NSF-53

Flow Rate

0.36 gpm

Removes 1 contaminants:

Chlorine

View Details

Highly Rated

Waterdrop

N/A

(65 reviews)

39.99

NSF Certified:

NSF-42

NSF-53

Flow Rate

1 gpm

Removes 5 contaminants:

Various, Chlorine, Heavy metals, Fluoride, Bacteria

View Details

Highly Rated

BEST LEAD REMOVAL

Whirlpool Corporation

W11256135

(40,578 reviews)

NSF Certified:

NSF-401

NSF-42

NSF-53

Capacity

1001 gal

Filter Life

3 mo

Flow Rate

0.7 gpm

Removes 19 contaminants:

1,2 Dichlorobenzene, 1,4 Dichlorobenzene, 2,4-D, Asbestos, Atrazine +14 more

View Details

Browse All Water Filter Types

Verify Your Water Quality with Independent Testing

With 4 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.

RECOMMENDED

SimpleLab

Advanced Home Water Test

$369

Most comprehensive home water test including all standard tests plus additional parameters for ultimate peace of mind.

(19 reviews)

7-10 days

300+ tested

EPA Certified

Tests 300+ parameters

Most thorough analysis available

EPA-certified laboratory

Order Test Kit

SimpleLab

Standard Home Water Test

$232

Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.

(209 reviews)

7-10 days

200+ tested

EPA Certified

Tests 200+ contaminants

EPA-certified laboratory

Easy mail-in sample collection

Order Test Kit

Tap Score

Haloacetic Acids (HAA9) Test

$275

Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.

7-10 days

9+ tested

EPA Certified

Tests 9 HAA compounds

Identifies chlorination byproducts

Important for chlorinated water

Order Test Kit

EPA-Certified Labs

7-10 Day Results

Easy Mail-In Collection

Browse All Test Kits

Frequently Asked Questions About Vienna Tap Water

Vienna's water has 4 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Vienna's water.

Vienna Tap Water Quality Report

Is Vienna Tap Water Safe to Drink?

Vienna Water Service Areas

Recommended Water Filters for Vienna

ZeroWater

N/A

W11256135

Browse All Water Filter Types

Verify Your Water Quality with Independent Testing

Advanced Home Water Test

Standard Home Water Test

Haloacetic Acids (HAA9) Test

Frequently Asked Questions About Vienna Tap Water

Is Vienna tap water safe to drink?

What contaminants are in Vienna's water?

Do I need a water filter in Vienna?

Does Vienna have any water quality violations?

Why does Vienna's water taste like chlorine?

Is Vienna's water hard or soft?

What are the main contaminants in Vienna tap water?

Can you drink tap water in Vienna?

How often is Vienna's water tested?

Where does Vienna's tap water come from?

What is the overall water quality in Vienna?

What are the most common contaminants detected in Vienna water?

Stay Informed About Your Water Quality