Drinking water quality · 2023
· Verified
What's in South Montebello Irrigation Dist. — Montebello, Ca, CA tap water
22 contaminants were measured in the South Montebello Irrigation Dist. — Montebello, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit — 2 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 22
- Over federal limit
- 2
- Approaching the limit
- 0
- Worst contaminant
- PFOS
- Service area
- CA
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 15 ng/LAverageGroundwater | None set | At or above the limit |
+By source (4)— Groundwater, Well 7, Well 3 +1 more
| |||
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 5.4 ng/LAverageGroundwater | None set | At or above the limit |
+By source (4)— Groundwater, Well 3, Well 7 +1 more
| |||
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | Not detected ng/LAverageGroundwater | None set | Detected — no federal limit |
+By source (4)— Well 7, Well 3, Groundwater +1 more
| |||
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected ng/LAverageGroundwater | None set | Detected — no federal limit |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 2.7Reported levelWell 7 | None set | Detected — no federal limit |
+By source (3)— Well 3, Well 7, Well 5
| |||
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | 3 ng/LAverageGroundwater | None set | Detected — no federal limit |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | 3 ng/LAverageGroundwater | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.9 mg/L90th percentileDistribution System | 1.3 mg/LAction level | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2 ug/LAverageImported Groundwater | None set | Within the limit |
+By source (2)— Groundwater, Imported Groundwater
| |||
| AluminumA common element sometimes used as a treatment coagulant. | Not detected mg/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Imported Groundwater
| |||
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.34 ug/LAverageGroundwater | None set | Detected — no federal limit |
+By source (2)— Groundwater, Imported Groundwater
| |||
| LithiumA naturally occurring element found in some groundwater. | Not detected ug/LAverageGroundwater | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 0.046 mg/LReported levelNone | None set | Detected — no federal limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Free | 1.2 mg/LAverageDistribution System | 4 mg/LMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 2.2 mg/LAverageImported Groundwater | 10 mg/LMCL | Within the limit |
+By source (2)— Imported Groundwater, Groundwater
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.31 mg/LAverageImported Groundwater | 4 mg/LMCL | Within the limit |
+By source (2)— Imported Groundwater, Groundwater
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 4 ug/LAverageDistribution System | None set | Within the limit |
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | Not detected ug/LAverageDistribution System | None set | None detected |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals. | 0MaximumDistribution System Highest Number Of Detections | 0MCLG | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected pCi/LAverageGroundwater | 5 pCi/LMCL | None detected |
+By source (2)— Groundwater, Imported Groundwater
| |||
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | Not detected pCi/LAverageImported Groundwater | 15 pCi/LMCL | Within the limit |
+By source (2)— Groundwater, Imported Groundwater
| |||
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 1 pCi/LAverageImported Groundwater | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Imported Groundwater, Groundwater
| |||
People also ask about South Montebello Irrigation Dist. — Montebello, Ca, CA's water
+Is South Montebello Irrigation Dist. — Montebello, Ca, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the South Montebello Irrigation Dist. — Montebello, Ca, CA water utility lists 2 contaminants at or above the federal limit: PFOS and PFOA. 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 South Montebello Irrigation Dist. — Montebello, Ca, CA tap water?
22 contaminants were measured in South Montebello Irrigation Dist. — Montebello, Ca, CA's 2023 Consumer Confidence Report, spanning pfas ("forever chemicals"), metals, and radionuclides. 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.
+Which contaminants exceed federal limits in South Montebello Irrigation Dist. — Montebello, Ca, CA tap water?
2 contaminants in South Montebello Irrigation Dist. — Montebello, Ca, CA's 2023 report sit at or above the federal limit: PFOS (3.8× the limit); PFOA (1.4× 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 South Montebello Irrigation Dist. — Montebello, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2023 report is PFOS, at 3.8× the federal threshold. It belongs to the pfas ("forever chemicals") family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from South Montebello Irrigation Dist. — Montebello, 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 South Montebello Irrigation Dist. — Montebello, 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.