Drinking water quality · 2023
· Verified
What's in Poway, City of — Poway, Ca, CA tap water
17 contaminants were measured in the Poway, City of — Poway, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 17
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
state-level CCR
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 2.39 mg/LAverageDistribution System | None set | Within the 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. | 46 ug/LAverageDistribution System | None set | Within the limit |
+By source (2)— Distribution System, Imported Water
| |||
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 21.7 ug/LAverageDistribution System | None set | Within the limit |
+By source (2)— Distribution System, Imported Water
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 1.91 ug/LAverageLake Poway Water | None set | Within the limit |
+By source (2)— Lake Poway Water, Imported Water
| |||
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 1.86 ug/L90th percentileAt the tap | None set | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.076 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 0.113 mg/LAverageTreatment Plant Effluent | None set | Detected — no federal limit |
+By source (3)— Treatment Plant Effluent, Imported Water, Lake Poway Water
| |||
| BoronA naturally occurring element from rock and soil. | 163 ug/LAverageLake Poway Water | 1000 ug/LNL | Detected — no federal limit |
+By source (2)— Lake Poway Water, Imported Water
| |||
| Vanadium | 3.78 ug/LAverageLake Poway Water | 50 ug/LNL | Detected — no federal limit |
+By source (2)— Lake Poway Water, Imported Water
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.7 mg/LAverageImported Water | 4 mg/LMCL | Within the limit |
+By source (2)— Imported Water, Lake Poway Water
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.345 mg/LAverageDistribution System | 10 mg/LMCL | Within the limit |
+By source (3)— Distribution System, Lake Poway Water, Imported Water
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 1.19 pCi/LAverageLake Poway Water | 15 pCi/LMCL | Within the limit |
+By source (2)— Imported Water, Lake Poway Water
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 5.99 pCi/LAverageLake Poway Water | None set | Detected — no federal limit |
+By source (2)— Lake Poway Water, Imported Water
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 2 pCi/LAverageImported Water | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Imported Water, Lake Poway Water
| |||
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 8.5AverageLake Poway Water | 0Public health goal | Detected — no federal limit |
+By source (3)— Lake Poway Water, Distribution System, Treatment Plant Effluent
| |||
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 207AverageLake Poway Water | None set | Detected — no federal limit |
+By source (2)— Lake Poway Water, Treatment Plant Effluent
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.3 %AverageTreatment Plant Effluent | 95 %MCL | Detected — no federal limit |
+By source (4)— Distribution System, Lake Poway Water, Imported Water +1 more
| |||
Source: Poway, City of — Poway, 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 Poway, City of — Poway, Ca, CA's water
+Is Poway, City of — Poway, Ca, CA tap water safe to drink in 2023?
Every one of the 17 contaminants measured in Poway, City of — Poway, 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 Poway, City of — Poway, Ca, CA tap water?
17 contaminants were measured in Poway, City of — Poway, Ca, CA's 2023 Consumer Confidence Report, spanning metals, radionuclides, and disinfection byproducts. 9 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Poway, City of — Poway, 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 Poway, City of — Poway, 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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