Drinking water quality · 2023
· Verified
What's in So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA tap water
39 contaminants were measured in the So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 39
- Over federal limit
- 0
- Approaching the limit
- 2
- Service area
- CA
state-level CCR
Approaching the limit (≥ 80%)
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.96 NTUAverageof Levels Detected | 1 NTUMCL | Approaching the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 320 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| Bicarbonate | 390 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 370 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| OdorA measure of detectable smell in the water. | 2Averageof Levels Detected | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 7.2Averageof Levels Detected | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 1600Averageof Levels Detected | None set | Detected — no federal limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 0.96 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 930 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 68 ug/LAverageof Levels Detected | None set | Approaching the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 33 ug/LAverageof Levels Detected | None set | Within the limit |
| BromodichloromethaneA trihalomethane disinfection byproduct. | 2.6 ug/LAverageof Levels Detected | 0.06 ug/LPublic health goal | Detected — no federal limit |
| BromoformA trihalomethane disinfection byproduct. | 39 ug/LAverageof Levels Detected | 0.5 ug/LPublic health goal | Detected — no federal limit |
| ChloroformA trihalomethane formed when chlorine reacts with organic matter in water. | 1.1 ug/LAverageof Levels Detected | 0.4 ug/LPublic health goal | Detected — no federal limit |
| DibromochloromethaneA trihalomethane disinfection byproduct. | 14 ug/LAverageof Levels Detected | 0.1 ug/LPublic health goal | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.83 mg/LAverageof Levels Detected | None set | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.3 ug/LAverageof Levels Detected | None set | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 1.5 ug/L90th percentileAt the tap | None set | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.12 mg/LAverageof Levels Detected | 2 mg/LMCL | Within the limit |
| CalciumA naturally occurring mineral that contributes to water hardness. | 67 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 1.8 ug/LAverageof Levels Detected | None set | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | 530 ug/LAverageof Levels Detected | None set | Detected — no federal limit |
| LithiumA naturally occurring element found in some groundwater. | 17.52 ug/LAverageof Levels Detected | 9 ug/LPublic health goal | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 46 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 28 ug/LAverageof Levels Detected | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 87 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 0.011 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Dibromoacetic acidA brominated haloacetic acid disinfection byproduct. | 28 ug/LAverageof Levels Detected | 0.03 ug/LPublic health goal | Within the limit |
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.27 mg/LAverageof Levels Detected | 4 mg/LMCL | Within the limit |
| Monobromoacetic acidA brominated haloacetic acid disinfection byproduct. | 3 ug/LAverageof Levels Detected | 25 ug/LPublic health goal | Within the limit |
| Dichloroacetic acidA haloacetic acid disinfection byproduct. | 2.6 ug/LAverageof Levels Detected | 0.2 ug/LPublic health goal | Within the limit |
| ChlorideA naturally occurring salt compound. | 340 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 51 mg/LAverageof Levels Detected | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Total | 0.99 mg/LAverageof Levels Detected | None set | Within the limit |
| Nitrate Nitrite | 0.58 mg/LAverageof Levels Detected | 10 mg/LMCL | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 3.5 pCi/LAverageof Levels Detected | 15 pCi/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.51 pCi/LAverageof Levels Detected | 5 pCi/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 0.5 pCi/LAverageof Levels Detected | 20 pCi/LMCL | Detected — no federal limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | Not detected ug/LAverageof Levels Detected | 0.003 ug/LPublic health goal | Detected — no federal limit |
Source: So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA's 2023 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 So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA's water
+Is So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA tap water safe to drink in 2023?
Every one of the 39 contaminants measured in So. Cal. Edison Co.-santa Catalina — Avalon, 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 So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA tap water?
39 contaminants were measured in So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA's 2023 Consumer Confidence Report, spanning metals, physical & aggregate, and disinfection byproducts. 16 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 So. Cal. Edison Co.-santa Catalina — Avalon, Ca, CA tap water approaching the federal limit?
2 contaminants are between 80% and 100% of the federal limit in this report: Turbidity and TTHM. 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 So. Cal. Edison Co.-santa Catalina — Avalon, 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 So. Cal. Edison Co.-santa Catalina — Avalon, 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.
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