Drinking water quality · 2023
What's in Barrio Logan, CA tap water
33 contaminants were measured in the Barrio Logan, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 33
- Over federal limit
- 0
- Approaching the limit
- 1
- Service area
- CA
Where your water comes from · EPA SDWIS
Barrio Logan, CA's drinking water comes from surface water, drawn from 8 sources.
Source
- EL CAJON WELL 04
- SAN VICENTE PRODUCTION
- EL CAPITAN RESERVOIR - RAW
- MIRAMAR RESERVOIR - RAW
- + 4 more
Treatment
- MIRAMAR PLANT EFFLUENT - TREATED
- OTAY PLANT EFFLUENT - TREATED
- ALVARADO PLANT EFFLUENT - TREATED
Distribution
Also buys water from SAN DIEGO COUNTY WATER AUTHORITY.
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-based1 violation on record · most recent Nov 2004resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 8.2–64.1 ug/LRangeCity of San Diego Distribution System | None set | Approaching the limit |
| Chlorite | 0.42 mg/LAverageOtay | 1 mg/LMCL | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 0–23.7 ug/LRangeCity of San Diego Distribution System | None set | Within the limit |
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 1.6 ug/LAveragePurchased Treated Water | None set | Within the limit |
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 186 ug/LAveragePurchased Treated Water | 800 ug/LNL | Detected — no federal limit |
| NDMA | 1.3 ng/LAveragePurchased Treated Water | 10 ng/LNL | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.6 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.1 mg/LAverageMiramar | 2 mg/LMCL | Within the 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. | Not detected mg/LAverageOtay | None set | Detected — no federal limit |
| BoronA naturally occurring element from rock and soil. | 0.4 mg/LAveragePurchased Treated Water | 1 mg/LNL | Detected — no federal limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | Not detected ug/LAveragePurchased Treated Water | None set | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | Not detected ug/LAverageAlvarado | None set | Detected — no federal limit |
| LithiumA naturally occurring element found in some groundwater. | 49.5 ug/LAverageMiramar | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 6.1 ug/LAverageAlvarado | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 109 mg/LAverageOtay | 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. | 0.8 mg/LAverageMiramar | 4 mg/LMCL | Within the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | Not detected mg/LAverageAlvarado | 10 mg/LMCL | Within the limit |
| ChlorideA naturally occurring salt compound. | 151 mg/LAverageOtay | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 174 mg/LAverageMiramar | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0AverageCity Of San Diego Distribution System | None set | None detected |
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.1 %AverageCity Of San Diego Distribution System | 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. | Not detected pCi/LAverageOtay | 15 pCi/LMCL | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 5 pCi/LAverageMiramar | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 2.1 pCi/LAverageAlvarado | 20 pCi/LMCL | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| AlkalinityA measure of the water's capacity to neutralize acids. | 123 mg/LAverageOtay | None set | Detected — no federal limit |
| ColorA measure of visible tint in the water. | 2AverageOtay | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 13.4AverageMiramar | None set | Detected — no federal limit |
| OdorA measure of detectable smell in the water. | Not detectedAverageAlvarado | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 8.33AveragePurchased Treated Water | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 980AverageOtay | None set | Detected — no federal limit |
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 4.5 mg/LAverageOtay | None set | Detected — no federal limit |
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 571 mg/LAverageOtay | None set | Detected — no federal limit |
People also ask about Barrio Logan, CA's water
+Is Barrio Logan, CA tap water safe to drink in 2023?
Every one of the 33 contaminants measured in Barrio Logan, 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 Barrio Logan, CA tap water?
33 contaminants were measured in Barrio Logan, CA's 2023 Consumer Confidence Report, spanning metals, physical & aggregate, and disinfection byproducts. 11 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 Barrio Logan, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: 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 Barrio Logan, 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 Barrio Logan, 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.