What's in Cws - North Garden — San Jose, Ca, CA tap water

37 contaminants were measured in the Cws - North Garden — San Jose, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.

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Reporting year: 2023
Contaminants measured: 37
Over federal limit: 0
Approaching the limit: 0
Service area: CA
Source: Utility CCR

All within federal limits. Every measured contaminant in this report is below its federal threshold.

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/LRunning annual avgDistribution System-Wide	None set	Within the limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.	32 ug/LRunning annual avgDistribution System-Wide	None set	Within the limit
+By source (3)— Distribution System-Wide, Groundwater, Surface Water Distribution System-WideZone avg32 ug/Lrange0–41 ug/L68% of limit GroundwaterPlant avgNot detected ug/Lrange0–8 ug/L13% of limit Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit
Bromodichloroacetic acidA brominated haloacetic acid disinfection byproduct.	1.8 ug/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg1.8 ug/Lrange0–3.2 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L
HAA9	21 ug/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg21 ug/Lrange0–35 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L
PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection.	2 mg/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Kcwa, Surface Water, Groundwater KcwaZone avg2 mg/Lrange2 mg/L Surface WaterPlant avgNot detected mg/LrangeNot detected mg/L GroundwaterPlant avgNot detected mg/LrangeNot detected mg/L

Inorganic chemicals

Contaminant	Measured	Federal limit	Status
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.	3.5 mg/LAverageGroundwater	10 mg/LMCL	Within the limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avg3.5 mg/Lrange0–6.5 mg/L65% of limit KcwaZone avg0.18 mg/Lrange0–0.63 mg/L6% of limit Surface WaterPlant avgNot detected mg/LrangeNot detected mg/L0% of limit
FluorideA mineral often added to drinking water to help prevent tooth decay.	0.2 mg/LAverageSurface Water	4 mg/LMCL	Within the limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avgNot detected mg/Lrange0–0.37 mg/L9% of limit KcwaZone avg0.13 mg/Lrange0–0.2 mg/L5% of limit Surface WaterPlant avg0.2 mg/Lrange0.2 mg/L5% of limit
Bromochloroacetic acidA mixed-halogen haloacetic acid disinfection byproduct.	1.4 ug/LAverageGroundwater	None set	Within the limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg1.4 ug/Lrange0–2.8 ug/L5% of limit Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit
Chlorodibromoacetic acidA brominated haloacetic acid disinfection byproduct.	0.07 ug/LAverageGroundwater	None set	Within the limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg0.07 ug/Lrange0–0.54 ug/L1% of limit Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit

Other

Contaminant	Measured	Federal limit	Status
Chlorine Free	1.3 mg/LAverageDistribution System-Wide	4 mg/LMCL	Within the limit

Metals

Contaminant	Measured	Federal limit	Status
CopperA metal that enters water from corroding household plumbing.	0.23 mg/L90th percentileAt the tap	1.3 mg/LAction level	Within the limit
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.	91 ug/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water KcwaZone avg91 ug/Lrange0–140 ug/L GroundwaterPlant avg3.5 ug/Lrange0–53 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L
BoronA naturally occurring element from rock and soil.	0.11 mg/LAverageKcwa	1 mg/LNL	Detected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avgNot detected mg/Lrange0–0.16 mg/L Surface WaterPlant avgNot detected mg/Lrange0–0.14 mg/L KcwaZone avg0.11 mg/Lrange0.11–0.11 mg/L
CalciumA naturally occurring mineral that contributes to water hardness.	40 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avg40 mg/Lrange15–89 mg/L KcwaZone avg15.6 mg/Lrange10.4–22.1 mg/L Surface WaterPlant avg14 mg/Lrange12–19 mg/L
Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium.	Not detected ug/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avgNot detected ug/Lrange0–0.21 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L KcwaZone avgNot detected ug/LrangeNot detected ug/L
GermaniumA trace metalloid found in some source water.	Not detected ug/LAverageSurface Water	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avgNot detected ug/Lrange0–0.96 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L
LithiumA naturally occurring element found in some groundwater.	15 ug/LAverageSurface Water	None set	Detected — no federal limit
+By source (2)— Surface Water, Groundwater Surface WaterPlant avg15 ug/Lrange14–15 ug/L GroundwaterPlant avgNot detected ug/LrangeNot detected ug/L
MagnesiumA naturally occurring mineral that contributes to water hardness.	5.54 mg/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water KcwaZone avg5.54 mg/Lrange1.8–14.9 mg/L GroundwaterPlant avg0.87 mg/Lrange0–4.2 mg/L Surface WaterPlant avg2.5 mg/Lrange2–3.3 mg/L
PotassiumA naturally occurring mineral from rock and soil.	2.59 mg/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Kcwa, Groundwater, Surface Water KcwaZone avg2.59 mg/Lrange1.61–4.43 mg/L GroundwaterPlant avg1.1 mg/Lrange0–2.5 mg/L Surface WaterPlant avg1.3 mg/Lrange0–2.2 mg/L
SodiumA naturally occurring salt component.	63 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avg63 mg/Lrange29–99 mg/L KcwaZone avg32.4 mg/Lrange13.4–80.4 mg/L Surface WaterPlant avg14 mg/Lrange11–18 mg/L

Radionuclides

Contaminant	Measured	Federal limit	Status
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.	1.33 pCi/LAverageKcwa	15 pCi/LMCL	Within the limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avgNot detected pCi/Lrange0–5.6 pCi/L37% of limit KcwaZone avg1.33 pCi/Lrange1.33–1.33 pCi/L9% of limit Surface WaterPlant avgNot detected pCi/LrangeNot detected pCi/L0% of limit
UraniumA naturally occurring radioactive metal from erosion of natural deposits.	4.4 pCi/LAverageSurface Water	20 pCi/LMCL	Detected — no federal limit
+By source (3)— Surface Water, Groundwater, Kcwa Surface WaterPlant avg4.4 pCi/Lrange4.4 pCi/L GroundwaterPlant avgNot detected pCi/Lrange0–3.4 pCi/L KcwaZone avgNot detected pCi/LrangeNot detected pCi/L

Physical & aggregate

Contaminant	Measured	Federal limit	Status
TurbidityA measure of cloudiness from suspended particles in the water.	0.07 NTUMaximumKcwa	None set	Within the limit
+By source (2)— Kcwa, Surface Water KcwaPlant 7% of limit Surface WaterPlant 6% of limit
AlkalinityA measure of the water's capacity to neutralize acids.	59 mg/LAverageSurface Water	None set	Detected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avg43 mg/Lrange29–98 mg/L Surface WaterPlant avg59 mg/Lrange40–78 mg/L KcwaZone avg53 mg/Lrange40–66 mg/L
HardnessA measure of dissolved calcium and magnesium minerals.	104 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avg104 mg/Lrange38–230 mg/L KcwaZone avg61.9 mg/Lrange35.5–117 mg/L Surface WaterPlant avg45 mg/Lrange38–59 mg/L
pHA measure of how acidic or basic the water is.	8AverageSurface Water	None set	Detected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avg7.7range6–9.2 Surface WaterPlant avg8range7.8–8.3 KcwaZone avg7.3range7.18–7.4
TOCTotal organic carbon — a measure of organic material dissolved in the water.	2.2 mg/LMaximumKcwa	None set	Detected — no federal limit
+By source (2)— Kcwa, Surface Water KcwaPlant Surface WaterPlant

PFAS ("forever chemicals")

Contaminant	Measured	Federal limit	Status
Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.'	0.43 ng/LAverageGroundwater	3 ng/LNL	Within the limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg0.43 ng/Lrange0–3 ng/L30% of limit Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L0% of limit
PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings.	Not detected ng/LAverageSurface Water	6.5 ng/LNL	Within the limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avgNot detected ng/Lrange0–5.5 ng/L138% of limit Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L0% of limit
Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.'	0.05 ng/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg0.05 ng/Lrange0–2.1 ng/L Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L
Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.'	0.18 ng/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg0.18 ng/Lrange0–2.2 ng/L Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L

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

VOCs & pesticides

Contaminant	Measured	Federal limit	Status
DBCP1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide.	Not detected ng/LAverageSurface Water	None set	Within the limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avgNot detected ng/Lrange0–13 ng/L6% of limit Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L0% of limit KcwaPlant avgNot detected ng/LrangeNot detected ng/L0% of limit
TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing.	Not detected ug/LAverageKcwa	5 ug/LMCL	Within the limit
+By source (3)— Groundwater, Kcwa, Surface Water GroundwaterPlant avgNot detected ug/Lrange0–2.7 ug/L54% of limit KcwaPlant avgNot detected ug/LrangeNot detected ug/L0% of limit Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit
1,2,3-TCP	Not detected ng/LAverageKcwa	None set	Detected — no federal limit
+By source (3)— Groundwater, Surface Water, Kcwa GroundwaterPlant avgNot detected ng/Lrange0–10 ng/L Surface WaterPlant avgNot detected ng/LrangeNot detected ng/L KcwaPlant avgNot detected ng/LrangeNot detected ng/L
Dichlorodifluoromethane	2 ug/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface Water GroundwaterPlant avg2 ug/Lrange0–30 ug/L Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L

Source: Cws - North Garden — San Jose, Ca, CA's 2023 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.