For information about licensing EWG data and analyses, contact TWDrequests[at]ewg.org. Search. The project contains two sets of data. Use it to find information on Zip Codes, Lookup ZIP+4 of any address in the U.S., Find all the Zip Codes in a given radius, Find the distance between any two Zip Codes (line of sight + driving distance/directions). Find your CCR via the map or State list below. To test your water quality, start by purchasing a water test kit with strips for testing bacteria, lead, and other markers. We have strict quality controls as we collect and treat the water and we also analyse hundreds of samples every day. How to Check the Water in Your Home to See If It Is Drinkable. The Environmental Working Group has released a new online tool on Wednesday that allows you to type in your zip code and find out whats in your drinking water. With our FREE zip code finder, you have many ways of finding the information you need. EWG’s database is an easy way to check water supplies around the country. Please note: CCRs for all water systems may not be available. Find regulated and unregulated contaminants identified in drinking water supplies through test results Enhance public understanding of drinking water supplies and how to safeguard them Using the What’s In My Water? You may not copy, reproduce, republish or distribute information from EWG’s Tap Water Database without EWG’s prior written permission. Check your water quality To find out more information about the water quality in your area, enter your postcode in the box below and click submit. Cities by ZIP Code™ For more rapid delivery, please use the recommended or recognized city names whenever possible for this ZIP Code ™. Next, fill a glass with room temperature water and dip each strip into the water for 5 seconds, then remove them and shake off the excess. Each year by July 1st you should receive a Consumer Confidence Report (CCR), also known as an annual drinking water quality report from your water supplier. EWG’s Tap Water Database is provided solely for your personal, non-commercial use. HEADQUARTERS 1436 U Street NW, Suite 100 | Washington, DC 20009 | … Enter your postcode to check water quality in your area. Your CCR tells you where your water comes from and what's in it.