Metals
Strontium in U.S. tap water
25 public water systems across 6 U.S. states report Strontium in their annual Consumer Confidence Report. 4 sit at or above the federal limit.
At or above the federal limit (4)
| Water system | Measured | vs. limit |
|---|---|---|
| Burbank, CA 2024 annual report | 0–920 ug/L | 460.0× the limit |
| Charleston, SC 2024 annual report | 53 ug/L | 2.6× the limit |
| North Charleston, SC 2024 annual report | 53 ug/L | 2.6× the limit |
| Charlotte, NC 2024 annual report | 42 ug/L | 2.1× the limit |
Within the federal limit (2)
| Water system | Measured |
|---|---|
| Salem, OR 2023 annual report | 0.032 mg/L |
| Pomona, CA 2024 annual report | Not detected pCi/L |
Frequently asked
+What is Strontium?
Strontium is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+What is the federal limit for Strontium in drinking water?
The federal MCL for Strontium is 2 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 Strontium over the federal limit?
4 of the 25 public water systems on The Water Map report Strontium at or above its federal limit, spanning 6 U.S. states. The full list is on this page.
+How can I check if Strontium 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 Strontium.