Disinfection byproducts · 2024
TTHM in Jacksonville, FL tap water
Jacksonville, FL's 2024 Consumer Confidence Report shows TTHM at or above the federal limit. Measured value is 1.1× the threshold.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Major Grid | 70.81 ug/L | None set |
Range Major Grid | 25.71–91.49 ug/L | None set |
Reported level Mayport | 60.54 ug/L | None set |
Reported level Lofton Oaks Grid | 63.27 ug/L | None set |
Range Lofton Oaks Grid | 31.8–72.79 ug/L | None set |
Reported level Ponce de Leon Grid | 64.31 ug/L | None set |
Range Ponce de Leon Grid | 18.6–83.36 ug/L | None set |
Reported level Ponte Vedra Grid | 42.37 ug/L | None set |
Range Ponte Vedra Grid | 37.42–42.37 ug/L | None set |
Reported level Palm Valley | 46.3 ug/L | None set |
Range Palm Valley | 45.78–46.3 ug/L | None set |
Verbatim from Jacksonville, FL's 2024 Consumer Confidence Report — source document ↗
About TTHM
Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.
Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
How Jacksonville, FL compares
2 of the 19 FL systems measuring TTHM on The Water Map have it at or above the federal limit:
Nearby systems also reporting TTHM:
People also ask
+Is there TTHM in Jacksonville, FL tap water?
Yes — Jacksonville, FL's 2024 Consumer Confidence Report lists TTHM at 25.71–91.49 ug/L. Jacksonville, FL's 2024 Consumer Confidence Report shows TTHM at or above the federal limit. Measured value is 1.1× the threshold.
+What's the federal limit for TTHM in drinking water?
The EPA has not set an enforceable federal limit for TTHM. Utilities still report any measured levels in their annual Consumer Confidence Report.
+What is TTHM?
Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
+Which other U.S. cities have TTHM over the federal limit?
2 of the 19 FL systems on The Water Map measuring TTHM report it at or above the federal limit. Examples include Hollywood, FL, West Palm Beach, FL.
+Where does this TTHM measurement come from?
This page reproduces the TTHM entry from the 2024 Consumer Confidence Report published by the Jacksonville, FL 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/fl/jacksonville/2024/source.