Disinfection byproducts · 2022
TTHM in City of Arroyo Grande Utilities Division — Arroyo Grande, Ca, CA tap water
City of Arroyo Grande Utilities Division — Arroyo Grande, Ca, CA's 2022 TTHM measurement is below the federal limit.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range State Water | 24–77 ug/L | None set |
Average Groundwater | 57.9 ug/L | None set |
Average Lopez WTP | 57.8 ug/L | None set |
Range Groundwater | 46.6–78.7 ug/L | None set |
Range Lopez WTP | 42–97 ug/L | None set |
Average State Water | 54 ug/L | None set |
Verbatim from City of Arroyo Grande Utilities Division — Arroyo Grande, 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 City of Arroyo Grande Utilities Division — Arroyo Grande, 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 City of Arroyo Grande Utilities Division — Arroyo Grande, Ca, CA tap water?
Yes — City of Arroyo Grande Utilities Division — Arroyo Grande, Ca, CA's 2022 Consumer Confidence Report lists TTHM at 57.9 ug/L. City of Arroyo Grande Utilities Division — Arroyo Grande, 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 City of Arroyo Grande Utilities Division — Arroyo Grande, 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/arroyo-grande-utilities-division-arroyo-grande-ca/2022/source.