VOCs & pesticides
Dichloromethane in U.S. tap water
45 public water systems across 9 U.S. states report Dichloromethane in their annual Consumer Confidence Report. 1 sit at or above the federal limit.
At or above the federal limit (1)
| Water system | Measured | vs. limit |
|---|---|---|
| San Bernardino City — San Bernardino, Ca, CA 2023 annual report | 0.01 mg/L | 2.0× the limit |
Within the federal limit (44)
| Water system | Measured |
|---|---|
| Edmond, OK 2024 annual report | 1.43 ug/L |
| Pinedale County Water District — Pinedale, Ca, CA 2023 annual report | 0.59 ug/L |
| South Tahoe Pud - Main — South Lake Tahoe, Ca, CA 2023 annual report | 0.5 ug/L |
| City of Sanger — Sanger, Ca, CA 2023 annual report | 0.12 ug/L |
| Fontana, CA 2024 annual report | 0.1 ug/L |
| Antelope Valley East Kern Water Agency — Palmdale, Ca, CA 2023 annual report | Not detected ug/L |
| Antelope Valley East Kern Water Agency — Palmdale, Ca, CA 2020 annual report | Not detected mg/L |
| Antelope Valley East Kern Water Agency — Palmdale, Ca, CA 2021 annual report | Not detected ug/L |
| Antelope Valley East Kern Water Agency — Palmdale, Ca, CA 2022 annual report | Not detected ug/L |
| Boron Csd — Boron, Ca, CA 2022 annual report | Not detected 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 mg/L |
| Columbus, OH 2025 annual report | Not detected mg/L |
| Foothill Municipal Water Dist. — La Canada Flintridge, Ca, CA 2023 annual report | Not detected ug/L |
| Garland, TX 2024 annual report | 0–0 ug/L |
| Gilbert, AZ 2024 annual report | Not detected mg/L |
| Gswc - Claremont — San Dimas, Ca, CA 2023 annual report | Not detected ug/L |
| Hampton, VA 2025 annual report | Not detected ug/L |
| High Point, NC 2024 annual report | Not detected ug/L |
| Home Gardens County Wd — Corona, Ca, CA 2022 annual report | Not detected ug/L |
| James City County, VA 2025 annual report | Not detected ug/L |
| Los Angeles Cwwd 21-kagel Canyon — Alhambra, Ca, CA 2023 annual report | Not detected ug/L |
| Los Angeles LADWP, CA 2023 annual report | Not detected ug/L |
| Mobile, AL 2024 annual report | Not detected ug/L |
| Mojave Pud — Mojave, Ca, CA 2023 annual report | Not detected ug/L |
| Montgomery, AL 2024 annual report | Not detected mg/L |
| Nashville, TN 2023 annual report | Not detected mg/L |
| Newport News, VA 2024 annual report | Not detected ug/L |
| Pico Wd — Pico Rivera, Ca, CA 2023 annual report | Not detected mg/L |
| Pico Wd — Pico Rivera, Ca, CA 2021 annual report | Not detected mg/L |
| Pico Wd — Pico Rivera, Ca, CA 2022 annual report | Not detected mg/L |
| Plano, TX 2024 annual report | 0–0 ug/L |
| Westside Park Mutual Water — Palmdale, Ca, CA 2023 annual report | Not detected ug/L |
| White Fence Farms Mwc No. 1 — Palmdale, Ca, CA 2021 annual report | Not detected ug/L |
| White Fence Farms Mwc No. 1 — Palmdale, Ca, CA 2023 annual report | Not detected ug/L |
| White Fence Farms Mwc No. 1 — Palmdale, Ca, CA 2020 annual report | Not detected ug/L |
| White Fence Farms Mwc No.3 — Lancaster, Ca, CA 2023 annual report | Not detected ug/L |
| White Fence Farms Mwc No.3 — Lancaster, Ca, CA 2020 annual report | Not detected ug/L |
| White Fence Farms Mwc No.3 — Lancaster, Ca, CA 2021 annual report | Not detected ug/L |
| White Fence Farms Mwc No.3 — Lancaster, Ca, CA 2022 annual report | Not detected ug/L |
| York County, VA 2024 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?
1 of the 45 public water systems on The Water Map report Dichloromethane at or above its federal limit, spanning 9 U.S. states. The full list is on this page.
+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.