Drinking water quality · 2023
What's in Casitas Municipal Water Dist — Oak View, Ca, CA tap water
14 contaminants were measured in the Casitas Municipal Water Dist — Oak View, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 14
- Over federal limit
- 0
- Approaching the limit
- 1
- 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.
- Treatment technique violationHealth-based5 violations on record · most recent Nov 1994resolved
- Maximum contaminant level exceededHealth-based2 violations on record · most recent Oct 2023resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 54 ug/LRunning annual avgDistribution System Highest [Raa]/ Locational | None set | Approaching the limit |
+By source (2)— Distribution System Individual Sample, Distribution System Highest [Raa]/ Locational
| |||
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 55 ug/LRunning annual avgDistribution System Highest [Raa]/ Locational | None set | Within the limit |
+By source (2)— Distribution System Individual Sample, Distribution System Highest [Raa]/ Locational
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 3 mg/LRunning annual avgDistribution System Highest [Raa]/ Locational | None set | Within the limit |
+By source (2)— Distribution System Individual Sample, Distribution System Highest [Raa]/ Locational
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.5 mg/L90th percentileLevel Detected at | 1.3 mg/LAction level | Within the limit |
+By source (3)— Individual Tap, Number of Samples Collected, Homes above RAL
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.12 mg/LAverageMira Monte Well Treated | 2 mg/LMCL | Within the limit |
+By source (2)— Mira Monte Well Treated, Lake Casitas Treated
| |||
| 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 |
| LithiumA naturally occurring element found in some groundwater. | 15 ug/LAverageLake Casitas Treated | None set | Detected — no federal limit |
+By source (2)— Mira Monte Well Treated, Lake Casitas Treated
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.21 NTUReported levelLake Casitas Treated | None set | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.8 mg/LAverageMira Monte Well Treated | 10 mg/LMCL | Within the limit |
+By source (2)— Mira Monte Well Treated, Lake Casitas Treated
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.3 mg/LAverageLake Casitas Treated | 4 mg/LMCL | Within the limit |
+By source (2)— Lake Casitas Treated, Mira Monte Well Treated
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0MaximumDistribution System Highest # Positive Samples | 0MCLG | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0MaximumDistribution System Highest # Positive Samples | 0MCLG | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFAS | Not detectedAverageLake Casitas Treated | None set | None detected |
+By source (2)— Lake Casitas Treated, Mira Monte Well Treated
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageLake Casitas Source Water | 15 pCi/LMCL | None detected |
+By source (2)— Lake Casitas Source Water, Mira Monte Well Source Water
| |||
People also ask about Casitas Municipal Water Dist — Oak View, Ca, CA's water
+Is Casitas Municipal Water Dist — Oak View, Ca, CA tap water safe to drink in 2023?
Every one of the 14 contaminants measured in Casitas Municipal Water Dist — Oak View, Ca, CA's 2023 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Casitas Municipal Water Dist — Oak View, Ca, CA tap water?
14 contaminants were measured in Casitas Municipal Water Dist — Oak View, Ca, CA's 2023 Consumer Confidence Report, spanning metals, disinfection byproducts, and inorganic chemicals. 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.
+Are any contaminants in Casitas Municipal Water Dist — Oak View, Ca, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: HAA5. 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 Casitas Municipal Water Dist — Oak View, 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 Casitas Municipal Water Dist — Oak View, 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.