Metals
Chromium, Total in U.S. tap water
133 public water systems across 28 U.S. states report Chromium, Total in their annual Consumer Confidence Report. 2 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 (2)
| Water system | Measured | vs. limit |
|---|---|---|
| San Francisco SFPUC, CA 2023 annual report | 16 ug/L | 1.6× the limit |
| Norman, OK 2024 annual report | 19–100 ug/L | 1.0× the limit |
Approaching the limit (1)
| Water system | Measured | vs. limit |
|---|---|---|
| Phoenix, AZ 2025 annual report | 0–87 ug/L | 0.9× the limit |
Within the federal limit (129)
| Water system | Measured |
|---|---|
| Avondale, AZ 2024 annual report | 0–56 ug/L |
| Vacaville, CA 2024 annual report | 19 ug/L |
| Tracy, CA 2024 annual report | 3.55 ug/L |
| Edmond, OK 2024 annual report | 32.4 ug/L |
| City of Cupertino, CA 2024 annual report | 3.2 ug/L |
| San Jose, CA 2024 annual report | 3.2 ug/L |
| Pomona, CA 2024 annual report | 0–15 ug/L |
| Rancho Cucamonga, CA 2024 annual report | 2.56 ug/L |
| Mesa, AZ 2024 annual report | 24.7 ug/L |
| Chandler, AZ 2024 annual report | 0–19 ug/L |
| Goodyear, AZ 2024 annual report | 19 ug/L |
| Buckeye, AZ 2024 annual report | 15 ug/L |
| College Station, TX 2024 annual report | 13.7–13.7 ug/L |
| Burbank, CA 2024 annual report | 0–6.4 ug/L |
| Glendale, CA 2024 annual report | 5.6 ug/L |
| Glendale, AZ 2024 annual report | 10 ug/L |
| Tempe, AZ 2024 annual report | 0–10 ug/L |
| Victorville, CA 2024 annual report | 4.7 ug/L |
| Gilbert, AZ 2024 annual report | 9.2 ug/L |
| Scottsdale, AZ 2024 annual report | 9.2 ug/L |
| Beach Harbor, MD 2024 annual report | 8.8–8.8 ug/L |
| Eden Mobile Home Park, MD 2024 annual report | 8.5 ug/L |
| Carpenters Point, MD 2024 annual report | 8 ug/L |
| Bayview at Kent Narrows, MD 2024 annual report | 7.3–7.3 ug/L |
| Claiborne, MD 2024 annual report | 7.2–7.2 ug/L |
| Kent, WA 2024 annual report | 0–0.0063 |
| Jackson, MS 2024 annual report | 5.9 ug/L |
| Caroline Acres Mhp, MD 2024 annual report | 2–5.7 ug/L |
| Chestertown, MD 2024 annual report | 4.9 ug/L |
| Salt Lake City, UT 2024 annual report | 4.7 |
| Cedarville Mhp, MD 2024 annual report | 4.6 ug/L |
| Clarksville, TN 2024 annual report | 1.08–4.24 ug/L |
| Joliet, IL 2024 annual report | 4.24 ug/L |
| Fort Worth, TX 2024 annual report | 4 ug/L |
| Chesapeake Beach, MD 2024 annual report | 3.9 ug/L |
| Amarillo, TX 2024 annual report | 3.8 ug/L |
| Hesperia, CA 2024 annual report | 0.37 ug/L |
| Beaches Water, MD 2024 annual report | 3.4 ug/L |
| Broad Creek, MD 2024 annual report | 2.8–3.3 ug/L |
| Crofton Odenton, MD 2024 annual report | 2.8–3.3 ug/L |
| Odessa, TX 2024 annual report | 2.8–2.8 ug/L |
| Lewisville, TX 2024 annual report | 1–2.7 ug/L |
| Overland Park, KS 2023 annual report | 2.6 |
| Rialto, CA 2024 annual report | 1.3 ug/L |
| Torrance, CA 2024 annual report | 0–1.3 ug/L |
| Vallejo, CA 2024 annual report | 0.25 ug/L |
| Aurora, IL 2024 annual report | 1.1–2.1 ug/L |
| Olathe, KS 2024 annual report | 2.1 ug/L |
| City of Hialeah, FL 2023 annual report | 0–2 ug/L |
| City of Homestead, FL 2023 annual report | 0–2 ug/L |
Showing 50 of 129. 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 0.1 mg/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?
2 of the 133 public water systems on The Water Map report Chromium, Total at or above its federal limit, spanning 28 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.