Drinking water quality · 2024
· Verified
What's in San Gabriel Valley Wc - Fontana, CA tap water
35 contaminants were measured in the San Gabriel Valley Wc - Fontana, CA water system's 2024 annual report. Each is shown below against its federal limit.
- Reporting year
- 2024
- Contaminants measured
- 35
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
Where your water comes from · EPA SDWIS
San Gabriel Valley Wc - Fontana, CA's drinking water comes from ground water, drawn from 35 sources.
Source
- SWP RAW - COMBINED INFLUENT
- WELL F-54A
- WELL F-10D
- WELL F-21B
- + 31 more
Treatment
- F-23 IX TP
- WELL F-13A - TREATED
- WELL F-13B - TREATED
- + 27 more
Distribution
Also buys water from CUCAMONGA VALLEY WATER DISTRICT.
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.
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 46 ug/LAverageSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 14 ug/LAverageSystem-wide | None set | Within the limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 0.1 ug/LAverageSystem-wide | 1 ug/LPublic health goal | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 3.32 mg/LAverageSystem-wide | 10 mg/LPublic health goal | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.2 mg/LAverageSystem-wide | 1 mg/LPublic health goal | Within the limit |
| ChlorideA naturally occurring salt compound. | 12.27 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 19.15 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 0.97 mg/LAverageSystem-wide | 4 mg/LPublic health goal | Within the limit |
| Xylenes Total | 0.05 ug/LAverageSystem-wide | 1 ug/LPublic health goal | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 260 ug/L90th percentileAt the tap | 1300 ug/LAction level | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.0 mg/L90th percentileAt the tap | 0.015 mg/LAction level | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 3.71 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| BoronA naturally occurring element from rock and soil. | 50 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 47.21 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.83 ug/LAverageSystem-wide | 0.02 ug/LPublic health goal | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | 15.5 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 9.05 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 0.12 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| PotassiumA naturally occurring mineral from rock and soil. | 2.65 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 27 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.08 NTUAverageSystem-wide | 1 NTUMCL | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 162 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| ColorA measure of visible tint in the water. | 0.04AverageSystem-wide | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 148.3 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| OdorA measure of detectable smell in the water. | 0.97AverageSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.89AverageSystem-wide | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 404.5AverageSystem-wide | None set | Detected — no federal limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 0.94 mg/LAverageSystem-wide | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 219.5 mg/LAverageSystem-wide | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0.83 pCi/LAverageSystem-wide | 0 pCi/LPublic health goal | Within the limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Dichloromethane | 0.1 ug/LAverageSystem-wide | 4 ug/LPublic health goal | Within the limit |
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | 0.02 ug/LAverageSystem-wide | 0.06 ug/LPublic health goal | Within the limit |
| Dichlorodifluoromethane | 0.12 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0 %Highest single samplePercentage of Positive Samples Collected | 0 %Public health goal | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 2 %Highest single samplePercentage of Positive Samples Collected | 0 %Public health goal | Detected — no federal limit |
People also ask about San Gabriel Valley Wc - Fontana, CA's water
+Is San Gabriel Valley Wc - Fontana, CA tap water safe to drink in 2024?
Every one of the 35 contaminants measured in San Gabriel Valley Wc - Fontana, CA's 2024 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 San Gabriel Valley Wc - Fontana, CA tap water?
35 contaminants were measured in San Gabriel Valley Wc - Fontana, CA's 2024 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 14 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 San Gabriel Valley Wc - Fontana, CA's 2024 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 San Gabriel Valley Wc - Fontana, 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 2024 report; a new report will replace it once the utility publishes its next annual update.