Drinking water quality · 2024
· Verified
What's in Oxnard Water Dept, CA tap water
125 contaminants were measured in the Oxnard Water Dept, CA water system's 2024 annual report. Each is shown below against its federal limit — 4 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 125
- Over federal limit
- 4
- Approaching the limit
- 1
- Worst contaminant
- Sulfate
- Service area
- CA
1.9× the limit
state-level CCR
At or above the federal limit
- SulfateInorganic chemicals · Average971.3131313131313 MG/Llimit 500 MG/L · 1.9× the limit
- Total Dissolved SolidsPhysical & aggregate · Average1518.0582524271845 MG/Llimit 1000 MG/L · 1.5× the limit
- Specific ConductancePhysical & aggregate · Average2023.5849056603774 UMHO/CMlimit 1600 UMHO/CM · 1.3× the limit
- Nitrate NitriteOther · Average10.266666666666666 MG/Llimit 10 MG/L · 1.0× the limit
Approaching the limit (≥ 80%)
Where your water comes from · EPA SDWIS
Oxnard Water Dept, CA's drinking water comes from ground water, drawn from 9 sources.
Source
9ground water
- WELL · 7
- WELLS 32, 33 & 34 BLENDED RAW
- WELL 22
Treatment
12treatment plants
- WELL 28 - TRT CL
- BS#3 - NITRATE BLEND - TREATED
- WELL 29 - TRT CL
- + 9 more
Distribution
0storage units
Also buys water from CALLEGUAS MUNICIPAL WATER DIST, UNITED WTR CONS DIST.
Source: EPA SDWIS facilities inventory. Methodology.
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| SulfateA naturally occurring mineral from rock and soil. | 971.3131313131313 MG/LAverageSource water | 500 MG/LMCL | At or above the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 1.6557142857142857 MG/LAverageSource water | 2 MG/LMCL | Approaching the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 5.8626000000000005 MG/LAverageSource water | 10 MG/LMCL | Within the limit |
| ChlorideA naturally occurring salt compound. | 75.66666666666667 MG/LAverageSource water | 500 MG/LMCL | Within the limit |
| Asbestos | Not detected MFLHighest single sampleSource water | 7 MFLMCL | None detected |
| Cyanide | Not detected UG/LHighest single sampleDistribution | 150 UG/LMCL | None detected |
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected MG/LHighest single sampleSource water | 1 MG/LMCL | None detected |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 1518.0582524271845 MG/LAverageSource water | 1000 MG/LMCL | At or above the limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 2023.5849056603774 UMHO/CMAverageSource water | 1600 UMHO/CMMCL | At or above the limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.2333333333333333 NTUAverageSource water | 5 NTUMCL | Within the limit |
| ColorA measure of visible tint in the water. | Not detected UNITSHighest single sampleDistribution | 15 UNITSMCL | None detected |
| OdorA measure of detectable smell in the water. | Not detected TONHighest single sampleDistribution | 3 TONMCL | None detected |
| AlkalinityA measure of the water's capacity to neutralize acids. | 261.93548387096774 MG/LAverageSource water | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 850.8850574712644 MG/LAverageSource water | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.5575 PHAverageDistribution | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Nitrate Nitrite | 10.266666666666666 MG/LAverageSource water | 10 MG/LMCL | At or above the limit |
| Carbofuran | Not detected UG/LHighest single sampleSource water | 18 UG/LMCL | None detected |
| Carbon Tetrachloride | Not detected UG/LHighest single sampleSource water | 0.5 UG/LMCL | None detected |
| Chlordane | Not detected UG/LHighest single sampleSource water | 0.1 UG/LMCL | None detected |
| Chlorobenzene | Not detected UG/LHighest single sampleSource water | 70 UG/LMCL | None detected |
| Chromium | Not detected UG/LHighest single sampleDistribution | 50 UG/LMCL | None detected |
| Cis Dichloroethylene 12 | Not detected UG/LHighest single sampleSource water | 6 UG/LMCL | None detected |
| Deha | Not detected UG/LHighest single sampleDistribution | 400 UG/LMCL | None detected |
| Dehp | Not detected UG/LHighest single sampleSource water | 4 UG/LMCL | None detected |
| Dichloroethane 12 | Not detected UG/LHighest single sampleDistribution | 0.5 UG/LMCL | None detected |
| Dichloroethylene 11 | Not detected UG/LHighest single sampleDistribution | 6 UG/LMCL | None detected |
| Dichloropropane 12 | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Dinoseb | Not detected UG/LHighest single sampleDistribution | 7 UG/LMCL | None detected |
| Diquat | Not detected UG/LHighest single sampleDistribution | 20 UG/LMCL | None detected |
| Edb | Not detected UG/LHighest single sampleDistribution | 0.05 UG/LMCL | None detected |
| Endothall | Not detected UG/LHighest single sampleDistribution | 100 UG/LMCL | None detected |
| Endrin | Not detected UG/LHighest single sampleDistribution | 2 UG/LMCL | None detected |
| Glyphosate | Not detected UG/LHighest single sampleSource water | 700 UG/LMCL | None detected |
| Heptachlor | Not detected UG/LHighest single sampleDistribution | 0.01 UG/LMCL | None detected |
| Heptachlor Epoxide | Not detected UG/LHighest single sampleSource water | 0.01 UG/LMCL | None detected |
| Hexachlorobenzene | Not detected UG/LHighest single sampleDistribution | 1 UG/LMCL | None detected |
| Hexachlorocyclopentadiene | Not detected UG/LHighest single sampleDistribution | 50 UG/LMCL | None detected |
| Mbaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Mcaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Methoxychlor | Not detected UG/LHighest single sampleSource water | 30 UG/LMCL | None detected |
| O Dichlorobenzene | Not detected UG/LHighest single sampleDistribution | 600 UG/LMCL | None detected |
| Oxamyl | Not detected UG/LHighest single sampleDistribution | 50 UG/LMCL | None detected |
| P Dichlorobenzene | Not detected UG/LHighest single sampleDistribution | 5 UG/LMCL | None detected |
| Pcb Total | Not detected UG/LHighest single sampleDistribution | 0.5 UG/LMCL | None detected |
| Pce | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Pentachlorophenol | Not detected UG/LHighest single sampleDistribution | 1 UG/LMCL | None detected |
| Picloram | Not detected UG/LHighest single sampleDistribution | 500 UG/LMCL | None detected |
| Styrene | Not detected UG/LHighest single sampleSource water | 100 UG/LMCL | None detected |
| Tce | Not detected UG/LHighest single sampleDistribution | 5 UG/LMCL | None detected |
| Toxaphene | Not detected UG/LHighest single sampleSource water | 3 UG/LMCL | None detected |
| Trans Dichloroethylene 12 | Not detected UG/LHighest single sampleSource water | 10 UG/LMCL | None detected |
| Trichlorobenzene 124 | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Trichloroethane 111 | Not detected UG/LHighest single sampleSource water | 200 UG/LMCL | None detected |
| Trichloroethane 112 | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Twofourd | Not detected UG/LHighest single sampleSource water | 70 UG/LMCL | None detected |
| Vinyl Chloride | Not detected UG/LHighest single sampleDistribution | 0.5 UG/LMCL | None detected |
| Dbaa | 3.240625 UG/LAverageDistribution | None set | Detected — no federal limit |
| Dcaa | 1.2875 UG/LAverageDistribution | None set | Detected — no federal limit |
| Tcaa | 0.584375 UG/LAverageDistribution | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 11.956666666666665 PCI/LAverageSource water | 15 PCI/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 10.9 PCI/LAverageSource water | 20 PCI/LMCL | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 7.706666666666667 PCI/LAverageSource water | 50 PCI/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected PCI/LHighest single sampleDistribution | None set | None detected |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 787 UG/L90th percentileDistribution | 1300 UG/LAl | Within the limit |
| ManganeseA naturally occurring metal from soil and rock. | 27.796551724137935 UG/LAverageSource water | 50 UG/LMCL | Within the limit |
| SeleniumA trace element from natural deposits and industrial discharge. | 20 UG/LAverageSource water | 50 UG/LMCL | Within the limit |
| IronA naturally occurring metal common in groundwater. | 68.28735632183908 UG/LAverageSource water | 300 UG/LMCL | Within the limit |
| MercuryA toxic metal from erosion of natural deposits and industrial runoff. | 0.36133333333333334 UG/LAverageSource water | 2 UG/LMCL | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 0.86 UG/LAverageSource water | 10 UG/LMCL | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 40 UG/LAverageSource water | 1000 UG/LMCL | Within the limit |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 13 UG/LAverageSource water | 5000 UG/LMCL | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | Not detected UG/LHighest single sampleDistribution | 1000 UG/LMCL | None detected |
| Antimony | Not detected UG/LHighest single sampleDistribution | 6 UG/LMCL | None detected |
| Beryllium | Not detected UG/LHighest single sampleDistribution | 4 UG/LMCL | None detected |
| Cadmium | Not detected UG/LHighest single sampleDistribution | 5 UG/LMCL | None detected |
| NickelA metal from natural deposits and industrial discharge. | Not detected UG/LHighest single sampleDistribution | 100 UG/LMCL | None detected |
| Strontium | Not detected PCI/LHighest single sampleSource water | 8 PCI/LMCL | None detected |
| Thallium | Not detected UG/LHighest single sampleSource water | 2 UG/LMCL | None detected |
| BoronA naturally occurring element from rock and soil. | 892 UG/LAverageSource water | None set | Detected — no federal limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 208.04444444444445 MG/LAverageSource water | None set | Detected — no federal limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 5.788235294117647 UG/LAverageDistribution | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 76.30459770114942 MG/LAverageSource water | None set | Detected — no federal limit |
| PotassiumA naturally occurring mineral from rock and soil. | 6.933333333333334 MG/LAverageSource water | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 133.33333333333334 MG/LAverageSource water | None set | Detected — no federal limit |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 1.59 mg/LRunning annual avgGreatest LRAA | 4 mg/LMCL | Within the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 3.1 ug/LRunning annual avgGreatest LRAA | 10 ug/LMCL | Within the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 18.188235294117646 UG/LAverageDistribution | 80 UG/LMCL | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 4.5 UG/LAverageDistribution | 60 UG/LMCL | Within the limit |
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | Not detected UG/LHighest single sampleSource water | 6 UG/LMCL | None detected |
| BromodichloromethaneA trihalomethane disinfection byproduct. | 3.4647058823529413 UG/LAverageDistribution | None set | Detected — no federal limit |
| BromoformA trihalomethane disinfection byproduct. | 6.167647058823529 UG/LAverageDistribution | None set | Detected — no federal limit |
| ChloroformA trihalomethane formed when chlorine reacts with organic matter in water. | 1.511764705882353 UG/LAverageDistribution | None set | Detected — no federal limit |
| DibromochloromethaneA trihalomethane disinfection byproduct. | 7.014705882352941 UG/LAverageDistribution | 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. | 0RangeSystem-wide | 0Public health goal | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)N-ethyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)N-methyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | Not detectedRangeSystem-wide | 10Public health goal | None detected |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorotetradecanoic acid (PFTeDA)Perfluorotetradecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorotridecanoic acid (PFTrDA)Perfluorotridecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | Not detectedAverageSystem-wide | 0.007Public health goal | None detected |
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | Not detectedRangeSystem-wide | 1Public health goal | None detected |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 1,2,3-TCP | Not detected UG/LHighest single sampleSource water | 0.005 UG/LMCL | None detected |
| AtrazineA widely used agricultural herbicide that reaches water through runoff. | Not detected UG/LHighest single sampleDistribution | 1 UG/LMCL | None detected |
| Benzene | Not detected UG/LHighest single sampleDistribution | 1 UG/LMCL | None detected |
| Benzo(a)pyrene | Not detected UG/LHighest single sampleSource water | 0.2 UG/LMCL | None detected |
| ChloroethaneA volatile organic compound used in some industrial processes. | Not detected UG/LHighest single sampleSource water | None set | None detected |
| Chloromethane | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Dalapon | Not detected UG/LHighest single sampleSource water | 200 UG/LMCL | None detected |
| Dichlorodifluoromethane | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| Dichloromethane | Not detected UG/LHighest single sampleDistribution | 5 UG/LMCL | None detected |
| Ethylbenzene | Not detected UG/LHighest single sampleSource water | 300 UG/LMCL | None detected |
| Simazine | Not detected UG/LHighest single sampleSource water | 4 UG/LMCL | None detected |
| Toluene | Not detected UG/LHighest single sampleDistribution | 150 UG/LMCL | None detected |
| XylenesA group of industrial solvents found in gasoline and paint. | Not detected UG/LHighest single sampleDistribution | 1750 UG/LMCL | None detected |
Source: Oxnard Water Dept, CA's 2024 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.
People also ask about Oxnard Water Dept, CA's water
+Is Oxnard Water Dept, CA tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Oxnard Water Dept, CA water utility lists 4 contaminants at or above the federal limit: Sulfate, Total Dissolved Solids, Specific Conductance, and Nitrate Nitrite. 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 Oxnard Water Dept, CA tap water?
125 contaminants were measured in Oxnard Water Dept, CA's 2024 Consumer Confidence Report, spanning other, metals, and pfas ("forever chemicals"). 88 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 Oxnard Water Dept, CA tap water?
4 contaminants in Oxnard Water Dept, CA's 2024 report sit at or above the federal limit: Sulfate (1.9× the limit); Total Dissolved Solids (1.5× the limit); Specific Conductance (1.3× the limit); Nitrate Nitrite (1.0× 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 Oxnard Water Dept, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Sulfate, at 1.9× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Are any contaminants in Oxnard Water Dept, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Fluoride. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from Oxnard Water Dept, CA's 2024 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 Oxnard Water Dept, 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 2024 report; a new report will replace it once the utility publishes its next annual update.
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