Metals · 2023
Selenium in Houston, TX tap water
Houston, TX's 2023 Selenium measurement is below the federal limit of 50 ug/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Minimum System-wide | Not detected ug/L | 50 ug/L MCL |
Maximum System-wide | 3.5 ug/L | 50 ug/L MCL |
Average System-wide | 1.8 ug/L | 50 ug/L MCL |
Verbatim from Houston, TX's 2023 Consumer Confidence Report — source document ↗
About Selenium
A trace element from natural deposits and industrial discharge.
Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.
How Houston, TX compares
2 of the 100 systems measuring Selenium on The Water Map have it at or above the federal limit:
Nearby systems also reporting Selenium:
People also ask
+Is there Selenium in Houston, TX tap water?
Yes — Houston, TX's 2023 Consumer Confidence Report lists Selenium at 1.8 ug/L. Houston, TX's 2023 Selenium measurement is below the federal limit of 50 ug/L (MCL).
+What's the federal limit for Selenium in drinking water?
The federal MCL for Selenium is 50 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Selenium?
A trace element from natural deposits and industrial discharge. Essential in tiny amounts, but long-term exposure above the federal limit can cause hair and fingernail loss and circulatory problems.
+Which other U.S. cities have Selenium over the federal limit?
2 of the 100 systems on The Water Map measuring Selenium report it at or above the federal limit. Examples include Mcallen, TX, Birmingham, AL.
+Where does this Selenium measurement come from?
This page reproduces the Selenium entry from the 2023 Consumer Confidence Report published by the Houston, TX 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/tx/houston/2023/source.