Drinking water quality · 2023
· Verified
What's in City of South Pasadena — South Pasadena, Ca, CA tap water
24 contaminants were measured in the City of South Pasadena — South Pasadena, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 24
- Over federal limit
- 1
- Approaching the limit
- 1
- Worst contaminant
- Turbidity
- Service area
- CA
1.1× the limit
state-level CCR
At or above the federal limit
Approaching the limit (≥ 80%)
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0–1.1 NTURangePasadena Groundwater | 1 NTUMCL | At or above the limit |
+By source (3)— Pasadena Groundwater, South Pasadena Groundwater, Metropolitan Imported Water
| |||
| ColorA measure of visible tint in the water. | 1Reported levelMetropolitan Imported Water | None set | Detected — no federal limit |
+By source (3)— Metropolitan Imported Water, South Pasadena Groundwater, Pasadena Groundwater
| |||
| OdorA measure of detectable smell in the water. | 2Reported levelMetropolitan Imported Water | None set | Detected — no federal limit |
+By source (3)— Metropolitan Imported Water, Pasadena Groundwater, South Pasadena Groundwater
| |||
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 520–880RangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 300–600 mg/LRangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 0–14 pCi/LRangePasadena Groundwater | 15 pCi/LMCL | Approaching the limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 0–6 pCi/LRangeMetropolitan Imported Water | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 3.2–14 pCi/LRangePasadena Groundwater | 20 pCi/LMCL | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0–7.5 mg/LRangePasadena Groundwater | 10 mg/LMCL | Within the limit |
+By source (3)— Pasadena Groundwater, South Pasadena Groundwater, Metropolitan Imported Water
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.6–1.1 mg/LRangePasadena Groundwater | 4 mg/LMCL | Within the limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
| ChlorideA naturally occurring salt compound. | 25–66 mg/LRangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
| SulfateA naturally occurring mineral from rock and soil. | 42–160 mg/LRangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.2–1.3 mg/LRangeSouth Pasadena Groundwater | None set | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.3 mg/LReported levelSouth Pasadena Groundwater | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0–0.14 mg/LRangePasadena Groundwater | 2 mg/LMCL | Within the limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0RangeSouth Pasadena Groundwater | None set | None detected |
| AluminumA common element sometimes used as a treatment coagulant. | 120Reported levelMetropolitan Imported Water | None set | Detected — no federal limit |
+By source (3)— Metropolitan Imported Water, Pasadena Groundwater, South Pasadena Groundwater
| |||
| IronA naturally occurring metal common in groundwater. | 0–260RangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, Metropolitan Imported Water, South Pasadena Groundwater
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Carbon Tetrachloride | Not detected ng/LReported levelMetropolitan Imported Water | None set | None detected |
+By source (3)— Metropolitan Imported Water, South Pasadena Groundwater, Pasadena Groundwater
| |||
| Pce | 0–2.9RangeSouth Pasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— South Pasadena Groundwater, Pasadena Groundwater, Metropolitan Imported Water
| |||
| Tce | 0–1.9RangeSouth Pasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— South Pasadena Groundwater, Pasadena Groundwater, Metropolitan Imported Water
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 0–12RangeMetropolitan Imported Water | None set | Detected — no federal limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 0–2.5RangeSouth Pasadena Groundwater | None set | Detected — no federal limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | 0–3.1RangePasadena Groundwater | None set | Detected — no federal limit |
+By source (3)— Pasadena Groundwater, South Pasadena Groundwater, Metropolitan Imported Water
| |||
Source: City of South Pasadena — South Pasadena, 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 City of South Pasadena — South Pasadena, Ca, CA's water
+Is City of South Pasadena — South Pasadena, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the City of South Pasadena — South Pasadena, Ca, CA water utility lists 1 contaminant at or above the federal limit: Turbidity. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in City of South Pasadena — South Pasadena, Ca, CA tap water?
24 contaminants were measured in City of South Pasadena — South Pasadena, Ca, CA's 2023 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 7 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in City of South Pasadena — South Pasadena, Ca, CA tap water?
One contaminant in City of South Pasadena — South Pasadena, Ca, CA's 2023 report sits at or above the federal limit: Turbidity (1.1× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in City of South Pasadena — South Pasadena, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is Turbidity, at 1.1× the federal threshold. It belongs to the physical & aggregate family of contaminants.
+Are any contaminants in City of South Pasadena — South Pasadena, Ca, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Gross Alpha. 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 City of South Pasadena — South Pasadena, 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 City of South Pasadena — South Pasadena, 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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