Drinking water quality · 2022
· Verified
What's in Commerce-city, Water Dept. — San Jose, Ca, CA tap water
31 contaminants were measured in the Commerce-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
- 31
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
state-level CCR
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 1.9 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. | 28 ug/LAverageAnnual Average | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 11 ug/LAverageAnnual Average | None set | Within the limit |
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 9.5 ug/LAverageCentral Basin MWD | 800 ug/LNL | Detected — no federal limit |
| NDMA | 1.75 ng/LAverageCentral Basin MWD | 10 ng/LNL | Detected — no federal limit |
+By source (3)— Central Basin MWD, Groundwater, Groundwater Range/
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.9 mg/LAverageSystem-wide | 10 mg/LMCL | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | 1.1 ng/LAverageGroundwater | None set | Within the limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | 1.9 ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | 3.9 ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | 6.9 ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 5.6 ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.06 NTUMaximumCentral Basin MWD | None set | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 125 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 175 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| pHA measure of how acidic or basic the water is. | 8.5AverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 2.25 NTUAverageCentral Basin MWD | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | Not detected ug/LAverageSystem-wide | None set | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | Not detected mg/L90th percentileAt the tap | 1.3 mg/LAction level | 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 |
| AluminumA common element sometimes used as a treatment coagulant. | 57.5 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| BoronA naturally occurring element from rock and soil. | 0.16 mg/LAverageGroundwater | 1 mg/LNL | Detected — no federal limit |
+By source (3)— Central Basin MWD, Groundwater Range/, Groundwater
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 53 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| LithiumA naturally occurring element found in some groundwater. | Not detected ug/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 10.5 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| PotassiumA naturally occurring mineral from rock and soil. | 3 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Central Basin MWD
| |||
| SodiumA naturally occurring salt component. | 56 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| Vanadium | 3.65 ug/LAverageCentral 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. | Not detected pCi/LAverageSystem-wide | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1 pCi/LAverageSystem-wide | 20 pCi/LMCL | Detected — no federal limit |
Source: Commerce-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 Commerce-city, Water Dept. — San Jose, Ca, CA's water
+Is Commerce-city, Water Dept. — San Jose, Ca, CA tap water safe to drink in 2022?
Every one of the 31 contaminants measured in Commerce-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 Commerce-city, Water Dept. — San Jose, Ca, CA tap water?
31 contaminants were measured in Commerce-city, Water Dept. — San Jose, Ca, CA's 2022 Consumer Confidence Report, spanning metals, pfas ("forever chemicals"), 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 Commerce-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 Commerce-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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