Disinfection byproducts · 2021
TTHM in Covina Irrigating Co. — West Covina, Ca, CA tap water
Covina Irrigating Co. — West Covina, Ca, CA's 2021 TTHM measurement is below the federal limit.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range Surface Water | 11–51 ug/L | None set |
Average Surface Water | 28 ug/L | None set |
Average Ground Water | 0.5 ug/L | None set |
Range Ground Water | 0–0.9 ug/L | None set |
Verbatim from Covina Irrigating Co. — West Covina, Ca, CA's 2021 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 Covina Irrigating Co. — West Covina, 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 Covina Irrigating Co. — West Covina, Ca, CA tap water?
Yes — Covina Irrigating Co. — West Covina, Ca, CA's 2021 Consumer Confidence Report lists TTHM at 28 ug/L. Covina Irrigating Co. — West Covina, Ca, CA's 2021 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 2021 Consumer Confidence Report published by the Covina Irrigating Co. — West Covina, 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/covina-irrigating-co-west-covina-ca/2021/source.