Drinking water quality · 2023
· Verified
What's in Glen Helen Water System — San Bernardino, Ca, CA tap water
14 contaminants were measured in the Glen Helen Water System — San Bernardino, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 14
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- HAA5
- Service area
- CA
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 |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 0.17 mg/LAverageSystem-wide | None set | At or above the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.5 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 |
| BoronA naturally occurring element from rock and soil. | 0.135 mg/LAverageSystem-wide | 1 mg/LNL | Detected — no federal limit |
| Vanadium | 4.5 ug/LAverageSystem-wide | 50 ug/LNL | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1.7–10 ug/LAverageSystem-wide | 30 ug/LMCL | Within the limit |
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 2.9 pCi/LAverageSystem-wide | 15 pCi/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.224 pCi/LAverageSystem-wide | 5 pCi/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 2.6 mg/LAverageSystem-wide | 10 mg/LMCL | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.37 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 0.92 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 0.0056 ng/LAverageSystem-wide | 3 ng/LNL | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0MaximumNo. of Detections | 0MCLG | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0MaximumNo. of Detections | None set | None detected |
People also ask about Glen Helen Water System — San Bernardino, Ca, CA's water
+Is Glen Helen Water System — San Bernardino, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the Glen Helen Water System — San Bernardino, Ca, CA water utility lists 1 contaminant at or above the federal limit: HAA5. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in Glen Helen Water System — San Bernardino, Ca, CA tap water?
14 contaminants were measured in Glen Helen Water System — San Bernardino, Ca, CA's 2023 Consumer Confidence Report, spanning metals, radionuclides, 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.
+Which contaminants exceed federal limits in Glen Helen Water System — San Bernardino, Ca, CA tap water?
One contaminant in Glen Helen Water System — San Bernardino, Ca, CA's 2023 report sits at or above the federal limit: HAA5 (2.8× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in Glen Helen Water System — San Bernardino, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is HAA5, at 2.8× the federal threshold. It belongs to the disinfection byproducts family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Glen Helen Water System — San Bernardino, 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 Glen Helen Water System — San Bernardino, 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.