Metals
Chromium, Total in U.S. tap water
109 public water systems across 6 U.S. states report Chromium, Total in their annual Consumer Confidence Report. 3 sit at or above the federal limit.
What it is
Total chromium — the sum of all chromium forms, from natural deposits and industrial discharge.
Why it's regulated
Long-term exposure above the federal limit can cause allergic dermatitis; includes hexavalent chromium.
At or above the federal limit (3)
| Water system | Measured | vs. limit |
|---|---|---|
| Central Ca Womens Facility — Chowchilla, Ca, CA 2023 annual report | 2.1–4.6 mg/L | 46.0× the limit |
| Alco Water Service — Salinas, Ca, CA 2023 annual report | 4.1 mg/L | 41.0× the limit |
| Box Springs Mutual Wc — Moreno Valley, Ca, CA 2022 annual report | 1.2 mg/L | 12.0× the limit |
Within the federal limit (106)
Showing 50 of 106. The full list is in the JSON API.
Frequently asked
+What is Chromium, Total?
Total chromium — the sum of all chromium forms, from natural deposits and industrial discharge. Long-term exposure above the federal limit can cause allergic dermatitis; includes hexavalent chromium.
+What is the federal limit for Chromium, Total in drinking water?
The federal MCL for Chromium, Total is 100 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 Chromium, Total over the federal limit?
3 of the 109 public water systems on The Water Map report Chromium, Total at or above its federal limit, spanning 6 U.S. states. The full list is on this page.
+How can I check if Chromium, Total 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 Chromium, Total.