Disinfection byproducts · 2021
TTHM in Nevada Id - North Auburn — Grass Valley, Ca, CA tap water
Nevada Id - North Auburn — Grass Valley, Ca, CA's 2021 TTHM level is between 80% and 100% of the federal limit (80 ug/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level Loma Rica | 38.4 ug/L | 80 ug/L MCL |
Range Loma Rica | 13–75.3 ug/L | 80 ug/L MCL |
Reported level North Auburn | 34.8 ug/L | 80 ug/L MCL |
Range North Auburn | 18–76.5 ug/L | 80 ug/L MCL |
Reported level Elizabeth George | 41.25 ug/L | 80 ug/L MCL |
Range Elizabeth George | 20–63 ug/L | 80 ug/L MCL |
Reported level Lake Wildwood | 32.8 ug/L | 80 ug/L MCL |
Range Lake Wildwood | 18–48 ug/L | 80 ug/L MCL |
Reported level Lake of the Pines | 25 ug/L | 80 ug/L MCL |
Range Lake of the Pines | 16–31 ug/L | 80 ug/L MCL |
Verbatim from Nevada Id - North Auburn — Grass Valley, 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 Nevada Id - North Auburn — Grass Valley, Ca, CA compares
4 of the 251 CA 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 Nevada Id - North Auburn — Grass Valley, Ca, CA tap water?
Yes — Nevada Id - North Auburn — Grass Valley, Ca, CA's 2021 Consumer Confidence Report lists TTHM at 18–76.5 ug/L. Nevada Id - North Auburn — Grass Valley, Ca, CA's 2021 TTHM level is between 80% and 100% of the federal limit (80 ug/L MCL) — measured but not in violation.
+What's the federal limit for TTHM in drinking water?
The federal MCL for TTHM is 80 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+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?
4 of the 251 CA systems on The Water Map measuring TTHM report it at or above the federal limit. Examples include Suisun-solano Water Authority — Vacaville, Ca, CA, Sweetwater Authority — Chula Vista, Ca, CA, Crestline Village Cwd - Division 10 — Crestline, Ca, CA.
+Where does this TTHM measurement come from?
This page reproduces the TTHM entry from the 2021 Consumer Confidence Report published by the Nevada Id - North Auburn — Grass Valley, 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/nevada-id-north-auburn-grass-valley-ca/2021/source.