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.
Chromium, Total by state
Every state where a public water system reports Chromium, Total in its annual report, ranked by systems at or above the federal limit.
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.
+Which states report the most Chromium, Total in their drinking water?
Of the systems on The Water Map, California (3 systems at or above the limit) report the most Chromium, Total exceedances. The state-by-state table on this page lists every state.
+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.