VOCs & pesticides
Dichloromethane in U.S. tap water
21 public water systems across 9 U.S. states report Dichloromethane in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (21)
| Water system | Measured |
|---|---|
| Edmond, OK 2024 annual report | 1.43 ug/L |
| Fontana, CA 2024 annual report | 0.1 ug/L |
| City of Hampton, VA 2024 annual report | Not detected ug/L |
| City of Newport News, VA 2025 annual report | Not detected ug/L |
| City of Poquoson, VA 2025 annual report | Not detected ug/L |
| City of Poquoson, VA 2024 annual report | Not detected ug/L |
| Cleveland, OH 2024 annual report | Not detected |
| Columbus, OH 2025 annual report | Not detected |
| Gilbert, AZ 2024 annual report | Not detected mg/L |
| Hampton, VA 2025 annual report | Not detected ug/L |
| High Point, NC 2024 annual report | Not detected ug/L |
| James City County, VA 2025 annual report | Not detected ug/L |
| James City County, VA 2024 annual report | Not detected ug/L |
| Los Angeles LADWP, CA 2023 annual report | Not detected ug/L |
| Mobile, AL 2024 annual report | Not detected |
| Montgomery, AL 2024 annual report | Not detected |
| Nashville, TN 2023 annual report | Not detected |
| Newport News, VA 2024 annual report | Not detected ug/L |
| Plano, TX 2024 annual report | 0–0 ug/L |
| York County, VA 2024 annual report | Not detected ug/L |
| York County, VA 2025 annual report | Not detected ug/L |
Frequently asked
+What is Dichloromethane?
Dichloromethane is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Dichloromethane in drinking water?
The federal MCLG for Dichloromethane is 0 ug/L. The EPA enforces this against the regulated reporting statistic (typically a running annual average or 90th percentile), not a single-sample spike.
+How many U.S. water systems have Dichloromethane over the federal limit?
Zero of the 21 public water systems in The Water Map dataset currently report Dichloromethane at or above its federal limit.
+How can I check if Dichloromethane is in my city's tap water?
Search your city on The Water Map (https://www.thewatermap.com/) or browse the list on this page. Every U.S. public water utility is required to publish an annual Consumer Confidence Report that lists every contaminant it measured, including Dichloromethane.