Disinfection byproducts · 2023
TTHM in Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA tap water
Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA's 2023 TTHM measurement is below the federal limit.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average System-wide | 30.53 ug/L | None set |
Range System-wide | 0–110 ug/L | None set |
Verbatim from Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA's 2023 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 Cucamonga Valley Water District — Rancho Cucamonga, 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 Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA tap water?
Yes — Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA's 2023 Consumer Confidence Report lists TTHM at 30.53 ug/L. Cucamonga Valley Water District — Rancho Cucamonga, Ca, CA's 2023 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 2023 Consumer Confidence Report published by the Cucamonga Valley Water District — Rancho Cucamonga, 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/cucamonga-valley-water-district-rancho-cucamonga-ca/2023/source.