Drinking water quality · 2021

· Verified

What's in California Water Service Co-leona Valley — San Jose, Ca, CA tap water

24 contaminants were measured in the California Water Service Co-leona Valley — San Jose, Ca, CA water system's 2021 annual report. Each is shown below against its federal limit.

Reporting year
2021
Contaminants measured
24
Over federal limit
0
Approaching the limit
0
Service area
CA
state-level CCR
Source
Utility CCR
All within federal limits. Every measured contaminant in this report is below its federal threshold.

Disinfection byproducts

ContaminantMeasuredStatus
TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.47 ug/LRunning annual avgDistribution System-Wide Highest AnnualWithin the limit
+By source (2)Distribution System-Wide, Distribution System-Wide Highest Annual
  • Distribution System-WideZone
    range20–90 ug/L113% of limit
  • Distribution System-Wide Highest AnnualZone
    avg47 ug/L59% of limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.11 ug/LRunning annual avgDistribution System-Wide Highest AnnualWithin the limit
+By source (2)Distribution System-Wide, Distribution System-Wide Highest Annual
  • Distribution System-WideZone
    range4.7–17 ug/L28% of limit
  • Distribution System-Wide Highest AnnualZone
    avg11 ug/L18% of limit

Radionuclides

ContaminantMeasuredStatus
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.5.6 pCi/LAverageAvekWithin the limit
+By source (2)Avek, Groundwater
  • AvekPlant
    avg5.6 pCi/Lrange5.6–5.7 pCi/L38% of limit
  • GroundwaterPlant
    avgNot detected pCi/LrangeNot detected pCi/L0% of limit
UraniumA naturally occurring radioactive metal from erosion of natural deposits.4.1 pCi/LAverageAvekDetected — no federal limit
+By source (2)Avek, Groundwater
  • AvekPlant
    avg4.1 pCi/Lrange3.5–4.7 pCi/L
  • GroundwaterPlant
    avg2.1 pCi/Lrange2.1 pCi/L

Inorganic chemicals

ContaminantMeasuredStatus
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.2.7 mg/LAverageGroundwaterWithin the limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg2.7 mg/Lrange0–4.9 mg/L49% of limit
  • AvekPlant
    6% of limit
FluorideA mineral often added to drinking water to help prevent tooth decay.0.25 mg/LAverageGroundwaterWithin the limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg0.25 mg/Lrange0–0.44 mg/L11% of limit
  • AvekPlant
    3% of limit
Asbestos0.26 MFLAverageGroundwaterWithin the limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg0.26 MFLrange0–2.3 MFL33% of limit
  • AvekPlant
    0% of limit

Other

ContaminantMeasuredStatus
Chlorine Free0.91 mg/LAverageDistribution System-WideWithin the limit

Physical & aggregate

ContaminantMeasuredStatus
TurbidityA measure of cloudiness from suspended particles in the water.0.18 NTUMaximumSystem-wideWithin the limit
AlkalinityA measure of the water's capacity to neutralize acids.178 mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg178 mg/Lrange120–260 mg/L
  • AvekPlant
    avgNot detected mg/L
HardnessA measure of dissolved calcium and magnesium minerals.284 mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg284 mg/Lrange200–420 mg/L
  • AvekPlant
    avg80 mg/L
pHA measure of how acidic or basic the water is.7.5AverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg7.5range6.6–8.2
  • AvekPlant
    avg7.1range6.9–7.4
TOCTotal organic carbon — a measure of organic material dissolved in the water.1.4 mg/LAverageSystem-wideDetected — no federal limit

Metals

ContaminantMeasuredStatus
CopperA metal that enters water from corroding household plumbing.0.07 mg/L90th percentileDistribution System-WideWithin the limit
BariumA metal from erosion of natural deposits and industrial discharge.Not detected mg/LAverageGroundwaterWithin the limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avgNot detected mg/Lrange0–0.14 mg/L7% of limit
  • AvekPlant
    0% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.Not detected ug/L90th percentileDistribution System-WideNone detected
BoronA naturally occurring element from rock and soil.Not detected mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avgNot detected mg/Lrange0–0.1 mg/L
  • AvekPlant
CalciumA naturally occurring mineral that contributes to water hardness.71 mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg71 mg/Lrange49–99 mg/L
  • AvekPlant
    avg24 mg/L
Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium.1.4 ug/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg1.4 ug/Lrange1.4 ug/L
  • AvekPlant
    avgNot detected ug/L
MagnesiumA naturally occurring mineral that contributes to water hardness.26 mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg26 mg/Lrange18–41 mg/L
  • AvekPlant
    avg4.8 mg/L
PotassiumA naturally occurring mineral from rock and soil.1.3 mg/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg1.3 mg/Lrange0–2.5 mg/L
  • AvekPlant
    avgNot detected mg/L
SodiumA naturally occurring salt component.66 mg/LAverageAvekDetected — no federal limit
+By source (2)Avek, Groundwater
  • AvekPlant
    avg66 mg/L
  • GroundwaterPlant
    avg53 mg/Lrange50–58 mg/L
Vanadium5.6 ug/LAverageGroundwaterDetected — no federal limit
+By source (2)Groundwater, Avek
  • GroundwaterPlant
    avg5.6 ug/Lrange5.4–5.8 ug/L
  • AvekPlant

Microbial

ContaminantMeasuredStatus
Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals.0MaximumDistribution System-Wide Highest MonthlyNone detected
Source: California Water Service Co-leona Valley — San Jose, Ca, CA's 2021 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 California Water Service Co-leona Valley — San Jose, Ca, CA's water

+Is California Water Service Co-leona Valley — San Jose, Ca, CA tap water safe to drink in 2021?

Every one of the 24 contaminants measured in California Water Service Co-leona Valley — San Jose, Ca, CA's 2021 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 California Water Service Co-leona Valley — San Jose, Ca, CA tap water?

24 contaminants were measured in California Water Service Co-leona Valley — San Jose, Ca, CA's 2021 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 11 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 California Water Service Co-leona Valley — San Jose, Ca, CA's 2021 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 California Water Service Co-leona Valley — 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 2021 report; a new report will replace it once the utility publishes its next annual update.

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