Drinking water quality · 2023
· Verified
What's in Monte Vista Wd — Montclair, Ca, CA tap water
19 contaminants were measured in the Monte Vista Wd — Montclair, 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
- 19
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Lead
- Service area
- CA
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 33 ug/LRangeSystem-wide | None set | At or above the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.3 ug/LAverageSystem-wide | None set | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 20 ug/LAverageSystem-wide | None set | Detected — no federal 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. | 59 ug/LAverageSystem-wide | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 13 ug/LAverageSystem-wide | None set | Within the limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 0.6 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Diquat | 9 ug/LAverageSystem-wide | None set | Within the limit |
| Chlorine Total | 0.54 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
| Chromium | Not detected ug/LRangeSystem-wide | None set | None detected |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 2.5 mg/LAverageSystem-wide | 10 mg/LMCL | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.13 mg/LAverageSystem-wide | 4 mg/LMCL | Within the limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| DBCP1,2-dibromo-3-chloropropane — a banned soil fumigant pesticide. | 1 ng/LAverageSystem-wide | None set | Within the limit |
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | Not detected ug/LRangeSystem-wide | 5 ug/LMCL | None detected |
| TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing. | Not detected ug/LAverageSystem-wide | 5 ug/LMCL | Within the limit |
| MTBE | Not detected ug/LAverageSystem-wide | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | Not detected %RangeSystem-wide | 0 %Public health goal | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageSystem-wide | 15 pCi/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | Not detected pCi/LAverageSystem-wide | 20 pCi/LMCL | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0–99.4 %RangeSystem-wide | None set | Detected — no federal limit |
People also ask about Monte Vista Wd — Montclair, Ca, CA's water
+Is Monte Vista Wd — Montclair, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the Monte Vista Wd — Montclair, Ca, CA water utility lists 1 contaminant at or above the federal limit: Lead. 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 Monte Vista Wd — Montclair, Ca, CA tap water?
19 contaminants were measured in Monte Vista Wd — Montclair, Ca, CA's 2023 Consumer Confidence Report, spanning vocs & pesticides, disinfection byproducts, and metals. 8 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 Monte Vista Wd — Montclair, Ca, CA tap water?
One contaminant in Monte Vista Wd — Montclair, Ca, CA's 2023 report sits at or above the federal limit: Lead (2.2× 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 Monte Vista Wd — Montclair, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is Lead, at 2.2× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Monte Vista Wd — Montclair, 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 Monte Vista Wd — Montclair, 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.