Disinfection byproducts · 2022
TTHM in Town of Hillsborough — Hillsborough, Ca, CA tap water
Town of Hillsborough — Hillsborough, Ca, CA's 2022 TTHM measurement is below the federal limit.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average System-wide | 53.5 ug/L | None set |
Range or Level Found | 35.7–64.8 ug/L | None set |
Verbatim from Town of Hillsborough — Hillsborough, Ca, CA's 2022 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 Town of Hillsborough — Hillsborough, Ca, CA compares
5 of the 1176 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 Town of Hillsborough — Hillsborough, Ca, CA tap water?
Yes — Town of Hillsborough — Hillsborough, Ca, CA's 2022 Consumer Confidence Report lists TTHM at 53.5 ug/L. Town of Hillsborough — Hillsborough, Ca, CA's 2022 TTHM measurement is below the federal limit.
+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?
5 of the 1176 systems on The Water Map measuring TTHM report it at or above the federal limit. Examples include Calexico, City of — Calexico, Ca, CA, White Fence Farms Mwc No.3 — Lancaster, Ca, CA, Greensboro, NC.
+Where does this TTHM measurement come from?
This page reproduces the TTHM entry from the 2022 Consumer Confidence Report published by the Town of Hillsborough — Hillsborough, 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/hillsborough-hillsborough-ca/2022/source.