Drinking water quality · 2023
· Verified
What's in Cal-water Service Co.-oroville — San Jose, Ca, CA tap water
17 contaminants were measured in the Cal-water Service Co.-oroville — San Jose, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 17
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 24 ug/LAverageDistribution System-Wide Highest Annual | None set | Within the limit |
+By source (2)— Distribution System-Wide, Distribution System-Wide Highest Annual
| |||
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 28 ug/LAverageDistribution System-Wide Highest Annual | None set | Within the limit |
+By source (2)— Distribution System-Wide, Distribution System-Wide Highest Annual
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Free | 1.2 mg/LAverageDistribution System-Wide | 4 mg/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.58 mg/LAverageDistribution System-Wide | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | Not detected mg/LAverageDistribution System-Wide | 10 mg/LMCL | Within the limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.03 NTUHighest single sampleSystem-wide | None set | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 150 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 150 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| pHA measure of how acidic or basic the water is. | 7.7AverageSurface Water | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 1.1 mg/LMaximumSystem-wide | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | Not detected mg/L90th percentileDistribution System-Wide | 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 percentileDistribution System-Wide | None set | None detected |
| CalciumA naturally occurring mineral that contributes to water hardness. | 26 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| LithiumA naturally occurring element found in some groundwater. | 79 ug/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 20 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
| SodiumA naturally occurring salt component. | 21 mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Surface Water
| |||
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 |
People also ask about Cal-water Service Co.-oroville — San Jose, Ca, CA's water
+Is Cal-water Service Co.-oroville — San Jose, Ca, CA tap water safe to drink in 2023?
Every one of the 17 contaminants measured in Cal-water Service Co.-oroville — 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 Cal-water Service Co.-oroville — San Jose, Ca, CA tap water?
17 contaminants were measured in Cal-water Service Co.-oroville — San Jose, Ca, CA's 2023 Consumer Confidence Report, spanning metals, physical & aggregate, and disinfection byproducts. 4 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 Cal-water Service Co.-oroville — 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 Cal-water Service Co.-oroville — 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.