Ewg Tap Water Database: A Comprehensive Resource for Understanding Water Quality


1. What is the EWG Tap Water Database?

The EWG Tap Water Database is an essential tool for anyone interested in understanding the quality of their tap water. Developed by the Environmental Working Group (EWG), a non-profit organization focused on public health and the environment, this database provides comprehensive information about the contaminants found in drinking water across the United States.

2. Why is it important to know about tap water quality?

Access to clean and safe drinking water is crucial for maintaining good health. Unfortunately, tap water can sometimes be contaminated with various pollutants that pose risks to human health. Understanding the quality of your tap water allows you to take necessary precautions and make informed decisions about water filtration or other treatment options.

3. How does the EWG Tap Water Database work?

The EWG Tap Water Database is based on data collected from various water utilities and state agencies. It analyzes water quality test results for over 300 contaminants and creates a comprehensive report for each location. Users can search for their local water system or enter their ZIP code to access information on tap water quality in their area.

4. What information does the database provide?

The database provides detailed information on contaminants found in tap water, including their health risks and violation levels. It also offers comparisons to national averages and health-based guidelines, helping users understand how their local water measures up. Additionally, the database provides tips on water filtration methods and suggests actions to protect water sources.

5. How can individuals contribute to the database?

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The EWG Tap Water Database encourages individuals to participate by submitting their own water quality test results. By doing so, users can help expand the database and contribute to a better understanding of tap water quality nationwide. This collective effort strengthens the scientific basis for evaluating and addressing water contamination issues.

6. Is the database regularly updated?

Yes, the EWG Tap Water Database undergoes regular updates to ensure that the information remains current and accurate. As water quality can change over time, these updates are essential for providing the most relevant data to users. It is recommended to check the database periodically for any new information or changes in water quality in your area.

7. How can the EWG Tap Water Database promote a healthier future?

By providing accessible and comprehensive information on tap water quality, the EWG Tap Water Database empowers individuals to take action and advocate for cleaner water sources. This knowledge can stimulate conversations with policymakers, drive community initiatives, and promote better regulations to safeguard public health and the environment.

Frequently Asked Questions (FAQ)

1. How can I find my local water system in the database?

To find your local water system, simply enter your ZIP code in the search bar on the EWG Tap Water Database website. The database will provide a list of water systems in your area along with their corresponding reports on tap water quality.

2. Are all contaminants listed in the database harmful to human health?

No, not all contaminants listed in the database pose a direct risk to human health. The database provides information on the presence of contaminants and their violation levels, but the health risks associated with each contaminant are assessed separately. It is important to refer to the provided health-based guidelines and consult experts for a comprehensive evaluation of potential health risks.

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3. Can I trust the information provided by the EWG Tap Water Database?

Yes, the information provided by the EWG Tap Water Database is carefully collected and analyzed from reliable sources. The database follows strict data quality standards and undergoes regular updates to maintain accuracy. However, it is always recommended to cross-reference the information with local authorities or water utility reports for the most up-to-date and specific details about your tap water quality.

4. How can I contribute my own water quality test results to the database?

Contributing your own water quality test results to the EWG Tap Water Database is simple. Visit the database website and follow the instructions provided to submit your test results. By doing so, you contribute to the collective understanding of water quality and help improve the overall accuracy of the database.

5. Are there any recommended water filtration methods based on the database findings?

The EWG Tap Water Database offers recommendations for water filtration based on the contaminants found in tap water. These recommendations can guide individuals in selecting appropriate filtration methods to remove specific contaminants. It is advisable to consult the database for personalized guidance or seek professional advice when choosing a water filtration system.


1. Take control of your tap water quality.

Accessing the EWG Tap Water Database empowers individuals to take control of their tap water quality by providing comprehensive information on contaminants, violation levels, and relevant health-based guidelines.

2. Advocate for better water regulations.

The knowledge gained from the database can be used to advocate for stronger regulations on water quality. By engaging in conversations with policymakers and supporting initiatives, you can contribute to a healthier future for everyone.

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3. Encourage community involvement.

Share the information obtained from the EWG Tap Water Database with your community. Encourage others to check their tap water quality and discuss potential actions to protect water sources and improve overall water quality.

4. Consider water filtration options.

If the database reveals concerning levels of contaminants in your tap water, consider investing in a reliable water filtration system. The database provides recommendations on filtration methods to help you make informed decisions and ensure the safety of your drinking water.

5. Contribute to the collective knowledge.

Support the ongoing efforts of the EWG Tap Water Database by contributing your own water quality test results. By doing so, you play a vital role in building a comprehensive resource that benefits individuals and communities nationwide.

6. Stay informed and updated.

Regularly check the EWG Tap Water Database for updates and new information. Stay informed about any changes in water quality in your area and continue taking necessary actions to protect your health and the environment.

7. Spread the word.

Share the existence and importance of the EWG Tap Water Database with friends, family, and colleagues. Together, we can raise awareness and encourage others to explore this valuable resource, ensuring safe and clean tap water for everyone.