Drinking water quality · 2023
· Verified
What's in Cal-am Water Company - Duarte — Rosemead, Ca, CA tap water
25 contaminants were measured in the Cal-am Water Company - Duarte — Rosemead, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 25
- Over federal limit
- 0
- Approaching the limit
- 0
- 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.
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 1.35 mg/LReported levelSystem-wide | 4 mg/LMRDLG | Within the limit |
| Radium 226 228 | 0.08 pCi/LAverageSystem-wide | 5 pCi/LMCL | Within the limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 1.3 ng/LAverageSystem-wide | 4 ng/LMCL | Within the limit |
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 0.2 ng/LAverageSystem-wide | 4 ng/LMCL | Within the limit |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 0.4 ng/LAverageSystem-wide | 10 ng/LMCL | Within the limit |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detected ng/LAverageSystem-wide | 10 ng/LMCL | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detected ng/LRangeSystem-wide | 10 ng/LMCL | None detected |
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | 0.5 ng/LAverageSystem-wide | None set | Detected — no federal limit |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | 0.3 ng/LAverageSystem-wide | None set | Detected — no federal limit |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | 0.3 ng/LAverageSystem-wide | None set | Detected — no federal limit |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 0.7 ng/LAverageSystem-wide | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 1.96 ug/LAverageSystem-wide | None set | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.133 mg/L90th percentileAt the tap | 0.3 mg/LMCLG | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 1 ug/L90th percentileAt the tap | 0.2 ug/LMCLG | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.094 mg/LAverageSystem-wide | 2 mg/LMCL | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 2.4 ug/LAverageSystem-wide | None set | Detected — no federal limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.34 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 1.42 mg/LAverageSystem-wide | 10 mg/LMCL | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.33 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 9.4 ug/LRunning annual avgSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 3.2 ug/LRunning annual avgSystem-wide | None set | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0.57 pCi/LAverageSystem-wide | 15 pCi/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 0.97 pCi/LAverageSystem-wide | 20 pCi/LMCL | 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. | 0MaximumPercentage | 0MCLG | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 1.2 %MaximumPercentage | 0 %MCLG | Detected — no federal limit |
People also ask about Cal-am Water Company - Duarte — Rosemead, Ca, CA's water
+Is Cal-am Water Company - Duarte — Rosemead, Ca, CA tap water safe to drink in 2023?
Every one of the 25 contaminants measured in Cal-am Water Company - Duarte — Rosemead, 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-am Water Company - Duarte — Rosemead, Ca, CA tap water?
25 contaminants were measured in Cal-am Water Company - Duarte — Rosemead, Ca, CA's 2023 Consumer Confidence Report, spanning pfas ("forever chemicals"), metals, and disinfection byproducts. 16 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-am Water Company - Duarte — Rosemead, 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-am Water Company - Duarte — Rosemead, 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.