Drinking water quality · 2020
· Verified
What's in Hawthorne-city Water Dept. — San Jose, Ca, CA tap water
18 contaminants were measured in the Hawthorne-city Water Dept. — San Jose, Ca, CA water system's 2020 annual report. Each is shown below against its federal limit.
- Reporting year
- 2020
- Contaminants measured
- 18
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 43 ug/LAverageAnnual Average | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 22 ug/LAverageGroundwater | None set | Within the limit |
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 67 ug/LAverageWest Basin MWD | 800 ug/LNL | Detected — no federal limit |
| NDMA | Not detected ng/LAverageWest Basin MWD | 10 ng/LNL | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 1.9 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageWest Basin MWD | 4 mg/LMCL | Within the limit |
+By source (2)— West Basin MWD, Groundwater
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.14 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | Not detected mg/LAverageGroundwater | 2 mg/LMCL | Within the limit |
+By source (2)— West Basin MWD, Groundwater
| |||
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | Not detected ug/L90th percentileAt the tap | None set | None detected |
| BoronA naturally occurring element from rock and soil. | 0.26 mg/LAverageGroundwater | 1 mg/LNL | Detected — no federal limit |
+By source (2)— Groundwater, West Basin MWD
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.06 NTUMaximumSystem-wide | None set | Within the limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2.4 mg/LRunning annual avgSystem-wide | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0MaximumDistribution System-Wide Highest Monthly | None set | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0MaximumDistribution System-Wide Highest Monthly | None set | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageWest Basin MWD3 | 0.019 pCi/LPublic health goal | Within the limit |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageWest Basin MWD3 | 15 pCi/LMCL | Within the limit |
+By source (2)— West Basin MWD3, Groundwater
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | Not detected pCi/LAverageWest Basin MWD3 | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1 pCi/LAverageWest Basin MWD3 | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— West Basin MWD3, Groundwater
| |||
People also ask about Hawthorne-city Water Dept. — San Jose, Ca, CA's water
+Is Hawthorne-city Water Dept. — San Jose, Ca, CA tap water safe to drink in 2020?
Every one of the 18 contaminants measured in Hawthorne-city Water Dept. — San Jose, Ca, CA's 2020 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Hawthorne-city Water Dept. — San Jose, Ca, CA tap water?
18 contaminants were measured in Hawthorne-city Water Dept. — San Jose, Ca, CA's 2020 Consumer Confidence Report, spanning disinfection byproducts, metals, and radionuclides. 10 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Hawthorne-city Water Dept. — San Jose, Ca, CA's 2020 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Hawthorne-city Water Dept. — San Jose, Ca, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2020 report; a new report will replace it once the utility publishes its next annual update.