Radionuclides · 2023
Combined Radium in Helix Water District — La Mesa, Ca, CA tap water
Helix Water District — La Mesa, Ca, CA's 2023 Combined Radium measurement is below the federal limit of 5 pCi/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Minimum Helix Plant | Not detected pCi/L | 5 pCi/L MCL |
Minimum Purchased Water | Not detected pCi/L | 5 pCi/L MCL |
Maximum Helix Plant | Not detected pCi/L | 5 pCi/L MCL |
Average Purchased Water | 0.16 pCi/L | 5 pCi/L MCL |
Maximum Purchased Water | 0.93 pCi/L | 5 pCi/L MCL |
Average Helix Plant | Not detected pCi/L | 5 pCi/L MCL |
Verbatim from Helix Water District — La Mesa, Ca, CA's 2023 Consumer Confidence Report — source document ↗
About Combined Radium
Combined radium-226 and radium-228 — naturally occurring radioactive elements.
Long-term exposure above the federal limit increases the risk of bone cancer.
How Helix Water District — La Mesa, Ca, CA compares
5 of the 464 systems measuring Combined Radium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Combined Radium:
People also ask
+Is there Combined Radium in Helix Water District — La Mesa, Ca, CA tap water?
Yes — Helix Water District — La Mesa, Ca, CA's 2023 Consumer Confidence Report lists Combined Radium at 0.16 pCi/L. Helix Water District — La Mesa, Ca, CA's 2023 Combined Radium measurement is below the federal limit of 5 pCi/L (MCL).
+What's the federal limit for Combined Radium in drinking water?
The federal MCL for Combined Radium is 5 pCi/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Combined Radium?
Combined radium-226 and radium-228 — naturally occurring radioactive elements. Long-term exposure above the federal limit increases the risk of bone cancer.
+Which other U.S. cities have Combined Radium over the federal limit?
5 of the 464 systems on The Water Map measuring Combined Radium report it at or above the federal limit. Examples include Lynn, MA, Aurora, IL, Broad Creek, MD.
+Where does this Combined Radium measurement come from?
This page reproduces the Combined Radium entry from the 2023 Consumer Confidence Report published by the Helix Water District — La Mesa, Ca, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/helix-water-district-la-mesa-ca/2023/source.