Drinking water quality · 2023
· Verified
What's in Cws - Bakersfield — San Jose, Ca, CA tap water
31 contaminants were measured in the Cws - Bakersfield — San Jose, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 31
- Over federal limit
- 0
- Approaching the limit
- 1
- Service area
- CA
state-level CCR
Approaching the limit (≥ 80%)
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based3 violations on record · most recent Nov 2002resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 64 ug/LAverageAnnual Average | None set | Approaching the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 40 ug/LAverageAnnual Average | None set | Within the limit |
| 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, Groundwater, Surface Water
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 1.2 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 1.5 mg/LAverageGroundwater | 10 mg/LMCL | Within the limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| 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, Surface Water, Kcwa
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.111 NTUMaximumSurface Water | None set | Within the limit |
+By source (2)— Surface Water, Kcwa
| |||
| AlkalinityA measure of the water's capacity to neutralize acids. | 96 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 109 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| pHA measure of how acidic or basic the water is. | 7.8AverageSurface Water | None set | Detected — no federal limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| 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
| |||
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
| |||
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageSurface Water | 0.019 pCi/LPublic health goal | Within the limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1.3 pCi/LAverageGroundwater | 20 pCi/LMCL | Detected — no federal limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.11 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | Not detected ug/LAverageKcwa | None set | Within the limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | Not detected mg/LAverageGroundwater | 2 mg/LMCL | Within the limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| 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
| |||
| BoronA naturally occurring element from rock and soil. | 0.15 mg/LAverageGroundwater | 1 mg/LNL | Detected — no federal limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 34 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| LithiumA naturally occurring element found in some groundwater. | 12 ug/LAverageSurface Water | None set | Detected — no federal limit |
+By source (2)— Surface Water, Groundwater
| |||
| 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
| |||
| PotassiumA naturally occurring mineral from rock and soil. | 2.59 mg/LAverageKcwa | None set | Detected — no federal limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| SodiumA naturally occurring salt component. | 32.4 mg/LAverageKcwa | None set | Detected — no federal limit |
+By source (3)— Groundwater, Kcwa, Surface Water
| |||
| Vanadium | 7.3 ug/LAverageGroundwater | 50 ug/LNL | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0MaximumDistribution System-Wide Highest Monthly | None set | None detected |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Pce | Not detected ug/LAverageGroundwater | None set | Within the limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
| Tce | Not detected ug/LAverageGroundwater | None set | Within the limit |
+By source (3)— Groundwater, Surface Water, Kcwa
| |||
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | Not detected ng/LAverageGroundwater | 5.1 ng/LNL | Within the limit |
+By source (2)— Groundwater, Surface Water
| |||
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 0.15 ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
Source: Cws - Bakersfield — 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.
People also ask about Cws - Bakersfield — San Jose, Ca, CA's water
+Is Cws - Bakersfield — San Jose, Ca, CA tap water safe to drink in 2023?
Every one of the 31 contaminants measured in Cws - Bakersfield — San Jose, Ca, CA's 2023 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 Cws - Bakersfield — San Jose, Ca, CA tap water?
31 contaminants were measured in Cws - Bakersfield — San Jose, Ca, CA's 2023 Consumer Confidence Report, spanning metals, physical & aggregate, and disinfection byproducts. 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.
+Are any contaminants in Cws - Bakersfield — San Jose, Ca, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: TTHM. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from Cws - Bakersfield — San Jose, Ca, CA's 2023 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 Cws - Bakersfield — 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 2023 report; a new report will replace it once the utility publishes its next annual update.
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