Radionuclides · 2023
Gross Alpha in Indianapolis, IN tap water
Indianapolis, IN's 2023 Gross Alpha measurement is below the federal limit of 15 pCi/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Maximum Maximum of All Samples | 2 pCi/L | 15 pCi/L MCL |
Range System-wide | 0–2 pCi/L | 15 pCi/L MCL |
Maximum Maximum of All Samples | 3.2 pCi/L | 15 pCi/L MCL |
Range System-wide | 0–3.2 pCi/L | 15 pCi/L MCL |
Maximum Maximum of All Samples | 1.1 pCi/L | 15 pCi/L MCL |
Range System-wide | 1 pCi/L | 15 pCi/L MCL |
Verbatim from Indianapolis, IN's 2023 Consumer Confidence Report — source document ↗
About Gross Alpha
Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances.
Long-term exposure above the federal limit increases cancer risk.
How Indianapolis, IN compares
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People also ask
+Is there Gross Alpha in Indianapolis, IN tap water?
Yes — Indianapolis, IN's 2023 Consumer Confidence Report lists Gross Alpha at 3.2 pCi/L. Indianapolis, IN's 2023 Gross Alpha measurement is below the federal limit of 15 pCi/L (MCL).
+What's the federal limit for Gross Alpha in drinking water?
The federal MCL for Gross Alpha is 15 pCi/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Gross Alpha?
Gross alpha particle activity — a combined measure of alpha-emitting radioactive substances. Long-term exposure above the federal limit increases cancer risk.
+Where does this Gross Alpha measurement come from?
This page reproduces the Gross Alpha entry from the 2023 Consumer Confidence Report published by the Indianapolis, IN 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/in/indianapolis/2023/source.