Drinking water quality · 2021
· Verified
What's in La Verne, City Wd, CA tap water
17 contaminants were measured in the La Verne, City Wd, CA water system's 2021 annual report. Each is shown below against its federal limit — 2 sit at or above that limit.
- Reporting year
- 2021
- Contaminants measured
- 17
- Over federal limit
- 2
- Approaching the limit
- 0
- Worst contaminant
- Nitrate
- 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.
- Maximum contaminant level exceededHealth-based5 violations on record · most recent Jul 2017resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 4–26 mg/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | 10 mg/LMCL | At or above the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.17–0.59 mg/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | 4 mg/LMCL | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Tce | 0–12 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | At or above the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| Chlorine Total | 2.54–2.77 mg/LReported levelMiramar Plant | None set | Within the limit |
| Pce | 0.5–0.5 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.011 mg/L90th percentileAt the tap | 0.015 mg/LAction level | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.8–2.8 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| CopperA metal that enters water from corroding household plumbing. | 0.084 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 74–95 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| Chromium, TotalTotal chromium — the sum of all chromium forms, from natural deposits and industrial discharge. | 1–3.3 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | Not detected ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | None detected |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 2.3–10.3 ug/LReported levelMiramar Plant | None set | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0Reported levelSystem Water | None set | None detected |
+By source (2)— System Water, Miramar Plant
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | Not detected NTUReported levelMiramar Plant | None set | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.88 %Reported levelMiramar Plant | 0.05 %Public health goal | Detected — no federal limit |
+By source (2)— Miramar Plant, Groundwater (24%) (Raw Water) (Range/Average)
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 5.82 pCi/LReported levelMiramar Plant | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 3.5–6.1 pCi/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
People also ask about La Verne, City Wd, CA's water
+Is La Verne, City Wd, CA tap water safe to drink in 2021?
The 2021 Consumer Confidence Report for the La Verne, City Wd, CA water utility lists 2 contaminants at or above the federal limit: Nitrate and Tce. 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 La Verne, City Wd, CA tap water?
17 contaminants were measured in La Verne, City Wd, CA's 2021 Consumer Confidence Report, spanning metals, other, and radionuclides. 6 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 La Verne, City Wd, CA tap water?
2 contaminants in La Verne, City Wd, CA's 2021 report sit at or above the federal limit: Nitrate (2.6× the limit); Tce (2.4× 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 La Verne, City Wd, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2021 report is Nitrate, at 2.6× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from La Verne, City Wd, CA's 2021 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 La Verne, City Wd, 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 2021 report; a new report will replace it once the utility publishes its next annual update.