Disinfection byproducts · 2023
HAA5 in San Luis Obispo Water Department — San Luis Obispo, Ca, CA tap water
San Luis Obispo Water Department — San Luis Obispo, Ca, CA's 2023 HAA5 level is between 80% and 100% of the federal limit (60 ug/L MCL) — measured but not in violation.
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Reported level System-wide | 32.4 ug/L | 60 ug/L MCL |
Range System-wide | 21–49 ug/L | 60 ug/L MCL |
Verbatim from San Luis Obispo Water Department — San Luis Obispo, 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 San Luis Obispo Water Department — San Luis Obispo, Ca, CA compares
2 of the 241 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 San Luis Obispo Water Department — San Luis Obispo, Ca, CA tap water?
Yes — San Luis Obispo Water Department — San Luis Obispo, Ca, CA's 2023 Consumer Confidence Report lists HAA5 at 21–49 ug/L. San Luis Obispo Water Department — San Luis Obispo, Ca, CA's 2023 HAA5 level is between 80% and 100% of the federal limit (60 ug/L MCL) — measured but not in violation.
+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 241 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 San Luis Obispo Water Department — San Luis Obispo, 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/san-luis-obispo-water-department-san-luis-obispo-ca/2023/source.