Drinking water quality · 2023
· Verified
What's in Cal-am Water Coronado — Imperial Beach, Ca, CA tap water
13 contaminants were measured in the Cal-am Water Coronado — Imperial Beach, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 13
- Over federal limit
- 0
- Approaching the limit
- 1
- Service area
- CA
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 3.8 mg/LRangeCity of San Diego's Distribution System | 4 mg/LMRDLG | Approaching the limit |
+By source (2)— City of San Diego's Distribution System, Coronado Distribution System
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 55 ug/LRunning annual avgCoronado Distribution System | None set | Within the limit |
+By source (2)— Coronado Distribution System, City of San Diego's Distribution System
| |||
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 18.1 ug/LRunning annual avgCoronado Distribution System | None set | Within the limit |
+By source (2)— Coronado Distribution System, City of San Diego's Distribution System
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.78 mg/L90th percentileAt the tap | 0.3 mg/LMCLG | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 2 ug/L90th percentileAt the tap | 0.2 ug/LMCLG | Within the limit |
| LithiumA naturally occurring element found in some groundwater. | 36 ug/LAverageSystem-wide | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageCity of San Diego's Alvarado & Otay WTPs | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.75 mg/LAverageCity of San Diego's Alvarado & Otay WTPs | 10 mg/LMCL | Within the limit |
+By source (2)— City of San Diego's Alvarado & Otay WTPs, Coronado Distribution System
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.15 NTUReported levelSystem-wide | None set | 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 sampleNo. of Samples | 0MCLG | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0Highest single sampleNo. of Samples | 0MCLG | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 2.25 pCi/LAverageCity of San Diego's Alvarado & Otay WTPs | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1.7AverageCity of San Diego's Alvarado & Otay WTPs | 20MCL | Detected — no federal limit |
People also ask about Cal-am Water Coronado — Imperial Beach, Ca, CA's water
+Is Cal-am Water Coronado — Imperial Beach, Ca, CA tap water safe to drink in 2023?
Every one of the 13 contaminants measured in Cal-am Water Coronado — Imperial Beach, 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 Cal-am Water Coronado — Imperial Beach, Ca, CA tap water?
13 contaminants were measured in Cal-am Water Coronado — Imperial Beach, 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 Cal-am Water Coronado — Imperial Beach, Ca, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Chlorine. 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 Cal-am Water Coronado — Imperial Beach, 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 Cal-am Water Coronado — Imperial Beach, 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.