What's in Vernon-city, Water Dept., CA tap water

25 contaminants were measured in the Vernon-city, Water Dept., CA water system's 2020 annual report. Each is shown below against its federal limit.

Browse the mapFull source report ↗

Reporting year: 2020
Contaminants measured: 25
Over federal limit: 0
Approaching the limit: 0
Service area: CA
Source: Utility CCR

All within federal limits. Every measured contaminant in this report is below its federal threshold.

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-based
3 violations on record · most recent Jun 1999
resolved

Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗

Metals

Contaminant	Measured	Federal limit	Status
CopperA metal that enters water from corroding household plumbing.	0.5 mg/L90th percentileAt the tap	None set	Within the limit
ArsenicA naturally occurring element that also enters water from industry and agriculture.	Not detected ug/LAverageMWD Surface Water	None set	Within the limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avgNot detected ug/Lrange0–2.2 ug/L22% of limit MWD Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.	0.0 mg/L90th percentileAt the tap	0.015 mg/LAction level	None detected
AluminumA common element sometimes used as a treatment coagulant.	0.15 mg/LAverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— MWD Surface Water, Groundwater MWD Surface WaterPlant avg0.15 mg/Lrange0–0.24 mg/L GroundwaterPlant avgNot detected mg/LrangeNot detected mg/L
CalciumA naturally occurring mineral that contributes to water hardness.	73 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg73 mg/Lrange56–110 mg/L MWD Surface WaterPlant avg67 mg/Lrange64–70 mg/L
MagnesiumA naturally occurring mineral that contributes to water hardness.	26 mg/LAverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg18 mg/Lrange13–28 mg/L MWD Surface WaterPlant avg26 mg/Lrange25–26 mg/L
ManganeseA naturally occurring metal from soil and rock.	51 ug/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg51 ug/Lrange19–96 ug/L MWD Surface WaterPlant avg0.6 ug/Lrange0–1.2 ug/L
PotassiumA naturally occurring mineral from rock and soil.	4.6 mg/LAverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg4.1 mg/Lrange3.5–4.9 mg/L MWD Surface WaterPlant avg4.6 mg/Lrange4.4–4.7 mg/L
SodiumA naturally occurring salt component.	98 mg/LAverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— MWD Surface Water, Groundwater MWD Surface WaterPlant avg98 mg/Lrange95–100 mg/L GroundwaterPlant avg50 mg/Lrange41–63 mg/L

Disinfection byproducts

Contaminant	Measured	Federal limit	Status
TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.	22 ug/LAverageSystem-wide	None set	Within the limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.	4 ug/LAverageSystem-wide	None set	Within the limit
BromateA disinfection byproduct formed when bromide-containing water is treated with ozone.	Not detected ug/LAverageMWD Surface Water	None set	Within the limit

Inorganic chemicals

Contaminant	Measured	Federal limit	Status
FluorideA mineral often added to drinking water to help prevent tooth decay.	0.7 mg/LAverageMWD Surface Water	4 mg/LMCL	Within the limit
+By source (2)— MWD Surface Water, Groundwater MWD Surface WaterPlant avg0.7 mg/Lrange0.6–0.9 mg/L23% of limit GroundwaterPlant avg0.35 mg/Lrange0.28–0.42 mg/L11% of limit
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.	Not detected mg/LAverageGroundwater	10 mg/LMCL	Within the limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avgNot detected mg/Lrange0–0.96 mg/L10% of limit MWD Surface WaterPlant avgNot detected mg/LrangeNot detected mg/L0% of limit

Other

Contaminant	Measured	Federal limit	Status
Chlorine Total	0.6 mg/LAverageSystem-wide	4 mg/LMCL	Within the limit

Microbial

Contaminant	Measured	Federal limit	Status
Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals.	0Highest single sampleNumber Of Detections	0MCLG	None detected

Radionuclides

Contaminant	Measured	Federal limit	Status
Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements.	Not detected pCi/LAverageGroundwater	5 pCi/LMCL	Within the limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avgNot detected pCi/Lrange0–1.3 pCi/L26% of limit MWD Surface WaterPlant avgNot detected pCi/Lrange0–1 pCi/L20% of limit
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.	Not detected pCi/LAverageGroundwater	15 pCi/LMCL	Within the limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avgNot detected pCi/Lrange0–9.1 pCi/L61% of limit MWD Surface WaterPlant avgNot detected pCi/LrangeNot detected pCi/L0% of limit
Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances.	5 pCi/LAverageMWD Surface Water	None set	Detected — no federal limit
UraniumA naturally occurring radioactive metal from erosion of natural deposits.	2.1 pCi/LAverageGroundwater	20 pCi/LMCL	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg2.1 pCi/Lrange0–8.1 pCi/L MWD Surface WaterPlant avg2 pCi/Lrange1–3 pCi/L

VOCs & pesticides

Contaminant	Measured	Federal limit	Status
TrichloroethyleneAn industrial solvent (TCE) used in metal degreasing.	Not detected ug/LAverageGroundwater	5 ug/LMCL	Within the limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avgNot detected ug/Lrange0–1.2 ug/L24% of limit MWD Surface WaterPlant avgNot detected ug/LrangeNot detected ug/L0% of limit

Physical & aggregate

Contaminant	Measured	Federal limit	Status
AlkalinityA measure of the water's capacity to neutralize acids.	210 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg210 mg/Lrange180–240 mg/L MWD Surface WaterPlant avg130 mg/Lrange120–130 mg/L
HardnessA measure of dissolved calcium and magnesium minerals.	270 mg/LAverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— Groundwater, MWD Surface Water GroundwaterPlant avg250 mg/Lrange190–390 mg/L MWD Surface WaterPlant avg270 mg/Lrange270 mg/L
pHA measure of how acidic or basic the water is.	8.1AverageMWD Surface Water	None set	Detected — no federal limit
+By source (2)— MWD Surface Water, Groundwater MWD Surface WaterPlant avg8.1range8.1 GroundwaterPlant avg7.7range7.1–8
TOCTotal organic carbon — a measure of organic material dissolved in the water.	2.4 mg/LAverageMWD Surface Water	None set	Detected — no federal limit

Source: Vernon-city, Water Dept., CA's 2020 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.