Disinfection byproducts · 2023
HAA5 in California Water Service Co. - Ela — San Jose, Ca, CA tap water
California Water Service Co. - Ela — San Jose, Ca, CA's 2023 HAA5 measurement is below the federal limit of 60 ug/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Range System-wide | 0–10 ug/L | 60 ug/L MCL |
Average Annual Average | 4.6 ug/L | 60 ug/L MCL |
Range Groundwater | 0–8.6 ug/L | 60 ug/L MCL |
Average Groundwater | 2.9 ug/L | 60 ug/L MCL |
Range Groundwater | 0–7.5 ug/L | 60 ug/L MCL |
Average Groundwater | 2.8 ug/L | 60 ug/L MCL |
Range Groundwater | 0–14 ug/L | 60 ug/L MCL |
Average Groundwater | 5.3 ug/L | 60 ug/L MCL |
Range Diemer Plant | 0–9.5 ug/L | 60 ug/L MCL |
Running annual avg Diemer Plant | 19 ug/L | 60 ug/L MCL |
Range Jensen Plant | 1.3–5 ug/L | 60 ug/L MCL |
Running annual avg Jensen Plant | 5.6 ug/L | 60 ug/L MCL |
Range Mills Plant | 0–5.7 ug/L | 60 ug/L MCL |
Running annual avg Mills Plant | 13 ug/L | 60 ug/L MCL |
Range Skinner Plant | 1.2–23 ug/L | 60 ug/L MCL |
Running annual avg Skinner Plant | 12 ug/L | 60 ug/L MCL |
Range Weymouth Plant | 0–4.2 ug/L | 60 ug/L MCL |
Running annual avg Weymouth Plant | 6.2 ug/L | 60 ug/L MCL |
Range Distribution System | 0–23 ug/L | 60 ug/L MCL |
Running annual avg Distribution System Highest LRAA | 19 ug/L | 60 ug/L MCL |
Verbatim from California Water Service Co. - Ela — San Jose, Ca, CA's 2023 Consumer Confidence Report — source document ↗
About HAA5
Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.
Long-term exposure above the federal limit is associated with an increased cancer risk.
How California Water Service Co. - Ela — San Jose, Ca, CA compares
2 of the 240 CA systems measuring HAA5 on The Water Map have it at or above the federal limit:
Nearby systems also reporting HAA5:
People also ask
+Is there HAA5 in California Water Service Co. - Ela — San Jose, Ca, CA tap water?
Yes — California Water Service Co. - Ela — San Jose, Ca, CA's 2023 Consumer Confidence Report lists HAA5 at 19 ug/L. California Water Service Co. - Ela — San Jose, Ca, CA's 2023 HAA5 measurement is below the federal limit of 60 ug/L (MCL).
+What's the federal limit for HAA5 in drinking water?
The federal MCL for HAA5 is 60 ug/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is HAA5?
Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. Long-term exposure above the federal limit is associated with an increased cancer risk.
+Which other U.S. cities have HAA5 over the federal limit?
2 of the 240 CA systems on The Water Map measuring HAA5 report it at or above the federal limit. Examples include Sweetwater Authority — Chula Vista, Ca, CA, St. Helena, City of — St. Helena, Ca, CA.
+Where does this HAA5 measurement come from?
This page reproduces the HAA5 entry from the 2023 Consumer Confidence Report published by the California Water Service Co. - Ela — San Jose, 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/california-water-service-co-ela-san-jose-ca/2023/source.