Drinking water quality · 2022
· Verified
What's in Hawthorne-city Water Dept. — San Jose, Ca, CA tap water
26 contaminants were measured in the Hawthorne-city Water Dept. — San Jose, Ca, CA water system's 2022 annual report. Each is shown below against its federal limit.
- Reporting year
- 2022
- Contaminants measured
- 26
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
state-level CCR
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 1.8 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 32 ug/LAverageAnnual Average | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 15 ug/LAverageAnnual Average | None set | Within the limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 9.5 ug/LAverageWest Basin MWD | 800 ug/LNL | Detected — no federal limit |
| HAA9 | 22 ug/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater Range/, Groundwater
| |||
| NDMA | 1.75 ng/LAverageWest Basin MWD | 10 ng/LNL | Detected — no federal limit |
+By source (2)— West Basin MWD, Groundwater
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.61 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | Not detected mg/LAverageSystem-wide | 10 mg/LMCL | None detected |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.06 NTUMaximumWest Basin MWD | None set | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 290 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 241 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| pHA measure of how acidic or basic the water is. | 8.5AverageWest Basin MWD | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, West Basin MWD, Groundwater
| |||
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2.25 NTUAverageWest Basin MWD | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.07 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | Not detected ug/LAverageSystem-wide | None set | None detected |
| 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
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 58 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| LithiumA naturally occurring element found in some groundwater. | 16 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 23 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| PotassiumA naturally occurring mineral from rock and soil. | 9 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater Range/, Groundwater, West Basin MWD
| |||
| SodiumA naturally occurring salt component. | 88 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater, Groundwater Range/, West Basin MWD
| |||
| Vanadium | 3.65 ug/LAverageWest Basin MWD | 50 ug/LNL | 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. | 0MaximumMonthly | None set | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 0–6 pCi/LRangeSystem-wide | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | Not detected pCi/LAverageSystem-wide | 20 pCi/LMCL | Detected — no federal limit |
Source: Hawthorne-city Water Dept. — San Jose, Ca, CA's 2022 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
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 2022?
Every one of the 26 contaminants measured in Hawthorne-city Water Dept. — San Jose, Ca, CA's 2022 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?
26 contaminants were measured in Hawthorne-city Water Dept. — San Jose, Ca, CA's 2022 Consumer Confidence Report, spanning metals, disinfection byproducts, and physical & aggregate. 9 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 2022 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 2022 report; a new report will replace it once the utility publishes its next annual update.
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