Other
Carbon Tetrachloride in U.S. tap water
43 public water systems across 8 U.S. states report Carbon Tetrachloride in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (42)
| Water system | Measured |
|---|---|
| Jackson, MS 2024 annual report | 0.52 ug/L |
| Delano, City of — Delano, Ca, CA 2023 annual report | 500 ng/L |
| California Domestic Water Company — Whittier, Ca, CA 2021 annual report | 444 ng/L |
| California Domestic Water Company — Whittier, Ca, CA 2020 annual report | 400 ng/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 |
| Big Bear City Csd — Big Bear City, Ca, CA 2023 annual report | 0 ug/L |
| Boron Csd — Boron, Ca, CA 2022 annual report | Not detected ug/L |
| City of Davis — Davis, Ca, CA 2023 annual report | Not detected ng/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 |
| City of South Pasadena — South Pasadena, Ca, CA 2022 annual report | Not detected ng/L |
| City of South Pasadena — South Pasadena, Ca, CA 2023 annual report | Not detected ng/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 ng/L |
| Garland, TX 2024 annual report | 0–0 ug/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 |
| 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 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 |
| White Fence Farms Mwc No.3 — Lancaster, Ca, CA 2023 annual report | Not detected ug/L |
| York County, VA 2024 annual report | Not detected ug/L |
Frequently asked
+What is Carbon Tetrachloride?
Carbon Tetrachloride is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Carbon Tetrachloride in drinking water?
The federal MCLG for Carbon Tetrachloride 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 Carbon Tetrachloride over the federal limit?
Zero of the 43 public water systems in The Water Map dataset currently report Carbon Tetrachloride at or above its federal limit.
+How can I check if Carbon Tetrachloride 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 Carbon Tetrachloride.