Drinking water quality · 2020
· Verified
What's in Commerce-city, Water Dept. — San Jose, Ca, CA tap water
25 contaminants were measured in the Commerce-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
- 25
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
state-level CCR
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 2.1 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. | 33 ug/LAverageAnnual Average | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 6 ug/LAverageAnnual Average | None set | Within the limit |
| NDMA | Not detected ng/LAverageCentral Basin MWD | 10 ng/LNL | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageCentral Basin MWD | 4 mg/LMCL | Within the limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 1.3 mg/LAverageGroundwater | 10 mg/LMCL | Within the 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 NTUMaximumSystem-wide | 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. | 223 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| pHA measure of how acidic or basic the water is. | 8.1AverageCentral 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. | 2.4 mg/LRunning annual avgSystem-wide | 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 |
| BariumA metal from erosion of natural deposits and industrial discharge. | Not detected mg/LAverageCentral Basin MWD | 2 mg/LMCL | Within the limit |
+By source (2)— Central 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. | 0.16 mg/LAverageGroundwater | 1 mg/LNL | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 77 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 21 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. | 3.9 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| SodiumA naturally occurring salt component. | 85 mg/LAverageCentral Basin MWD | None set | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
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/LAverageGroundwater | 0.019 pCi/LPublic health goal | Within the limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageCentral Basin MWD | 15 pCi/LMCL | Within the limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | Not detected pCi/LAverageCentral Basin MWD | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1 pCi/LAverageCentral Basin MWD | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Central Basin MWD, Groundwater
| |||
Source: Commerce-city, Water Dept. — San Jose, Ca, CA's 2020 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 2020?
Every one of the 25 contaminants measured in Commerce-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 Commerce-city, Water Dept. — San Jose, Ca, CA tap water?
25 contaminants were measured in Commerce-city, Water Dept. — San Jose, Ca, CA's 2020 Consumer Confidence Report, spanning metals, physical & aggregate, 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 Commerce-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 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 2020 report; a new report will replace it once the utility publishes its next annual update.
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