Drinking water quality · 2022
· Verified
What's in La Verne, City Wd — La Verne, Ca, CA tap water
21 contaminants were measured in the La Verne, City Wd — La Verne, Ca, CA water system's 2022 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2022
- Contaminants measured
- 21
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Nitrate
- Service area
- CA
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 4–14 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. | 0.17–0.33 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
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 11 ug/L90th percentileAt the tap | None set | 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. | 74–83 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. | 1–2.3 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 levelMiramar Plant | None set | None detected |
+By source (2)— Miramar Plant, Groundwater (24%) (Raw Water) (Range/Average)
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 2.54–2.65 mg/LReported levelMiramar Plant | None set | Within the limit |
| Dichloroethane 12 | 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 |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 31.3–34.39 ug/LReported levelMiramar Plant | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 2.3–6.225 ug/LReported levelMiramar Plant | None set | Within the limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 0–20 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | None set | Detected — no federal limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing. | 0–1.6 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | 5 ug/LMCL | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | 0.5–0.5 ug/LReported levelGroundwater (24%) (Raw Water) (Range/Average) | 5 ug/LMCL | Within the limit |
+By source (2)— Groundwater (24%) (Raw Water) (Range/Average), Miramar Plant
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0Reported levelMiramar Plant | None set | None detected |
+By source (2)— Miramar Plant, System Water
| |||
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0Reported levelMiramar Plant | None set | None detected |
+By source (2)— Miramar Plant, System Water
| |||
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. | 3.5–4.7 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 — La Verne, Ca, CA's water
+Is La Verne, City Wd — La Verne, Ca, CA tap water safe to drink in 2022?
The 2022 Consumer Confidence Report for the La Verne, City Wd — La Verne, Ca, CA water utility lists 1 contaminant at or above the federal limit: Nitrate. 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 — La Verne, Ca, CA tap water?
21 contaminants were measured in La Verne, City Wd — La Verne, Ca, CA's 2022 Consumer Confidence Report, spanning metals, disinfection byproducts, and radionuclides. 7 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 — La Verne, Ca, CA tap water?
One contaminant in La Verne, City Wd — La Verne, Ca, CA's 2022 report sits at or above the federal limit: Nitrate (1.4× 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 — La Verne, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2022 report is Nitrate, at 1.4× 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 — La Verne, Ca, CA's 2022 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 — La Verne, 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 2022 report; a new report will replace it once the utility publishes its next annual update.