Metals
Nickel in U.S. tap water
46 public water systems across 21 U.S. states report Nickel in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
What it is
A metal from natural deposits and industrial discharge.
Why it's regulated
Long-term exposure can cause skin and other effects; monitored under EPA rules.
Within the federal limit (29)
| Water system | Measured |
|---|---|
| Carpenters Point, MD 2024 annual report | 67 ug/L |
| Gaither Manor Apartments, MD 2024 annual report | 0.007 mg/L |
| St Petersburg, FL 2024 annual report | 4 ug/L |
| Lynn, MA 2024 annual report | 3 ug/L |
| Salt Lake City, UT 2024 annual report | 2.35 |
| Orlando, FL 2024 annual report | 2 ug/L |
| Columbia, MO 2024 annual report | 0.00165 mg/L |
| Overland Park, KS 2023 annual report | 1.5 |
| Chestertown, MD 2024 annual report | 0.0013 mg/L |
| Wichita Falls, TX 2024 annual report | 0.0013 |
| Sugar Land, TX 2024 annual report | 1.2 ug/L |
| Green Bay, WI 2024 annual report | 0–1.1 ug/L |
| Beaches Water, MD 2024 annual report | 0–0.0011 mg/L |
| Nashville, TN 2023 annual report | 0.001–0.001 |
| Scottsdale, AZ 2024 annual report | 1 ug/L |
| St Louis, MO 2024 annual report | 0.8–0.85 ug/L |
| Coral Springs, FL 2024 annual report | 0.271 ug/L |
| City of Cambridge, MD 2024 annual report | Not detected mg/L |
| Cleveland, OH 2024 annual report | Not detected |
| Columbus, OH 2025 annual report | Not detected |
| Fishers, IN 2024 annual report | Not detected ug/L |
| High Point, NC 2024 annual report | Not detected mg/L |
| Indianapolis, IN 2024 annual report | Not detected ug/L |
| Madison, WI 2024 annual report | Not detected ug/L |
| Montgomery, AL 2024 annual report | Not detected |
| Morgan County, IN 2024 annual report | Not detected ug/L |
| Salinas, CA 2024 annual report | Not detected ug/L |
| South Bend, IN 2024 annual report | Not detected ug/L |
| Westfield, IN 2024 annual report | Not detected ug/L |
Frequently asked
+What is Nickel?
A metal from natural deposits and industrial discharge. Long-term exposure can cause skin and other effects; monitored under EPA rules.
+What is the federal limit for Nickel in drinking water?
The federal MCL for Nickel 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 Nickel over the federal limit?
Zero of the 46 public water systems in The Water Map dataset currently report Nickel at or above its federal limit.
+How can I check if Nickel 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 Nickel.