Drinking water quality · 2022
· Verified
What's in Crescenta Valley Cwd — La Crescenta, Ca, CA tap water
36 contaminants were measured in the Crescenta Valley Cwd — La Crescenta, Ca, CA water system's 2022 annual report. Each is shown below against its federal limit — 4 sit at or above that limit.
- Reporting year
- 2022
- Contaminants measured
- 36
- Over federal limit
- 4
- Approaching the limit
- 1
- Worst contaminant
- Nitrate
- Service area
- CA
3.3× the limit
state-level CCR
At or above the federal limit
Approaching the limit (≥ 80%)
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 13.3–32.8 mg/LRangeCrescenta Valley Water District | 10 mg/LMCL | At or above the limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| FluorideA mineral often added to drinking water to help prevent tooth decay. | 0.6–0.8 mg/LRangeMetropolitan Water District's F. E. Weymouth Plant | 4 mg/LMCL | Within the limit |
+By source (2)— Metropolitan Water District's F. E. Weymouth Plant, Crescenta Valley Water District
| |||
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| BromateA disinfection byproduct formed when bromide-containing water is treated with ozone. | 0–12 ug/LRangeMetropolitan Water District's F. E. Weymouth Plant | None set | At or above the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 27.4–72.2 ug/LRangeCrescenta Valley Water District | None set | Approaching the limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 6.2–31 ug/LRangeCrescenta Valley Water District | None set | Within the limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| ChlorateA byproduct that can form during disinfection, especially when hypochlorite solutions degrade. | 19 ug/LReported levelMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | 1.5–4.3 ng/LRangeSystem-wide | 5.1 ng/LNL | At or above the limit |
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 0.78–4 ng/LRangeSystem-wide | 6.5 ng/LNL | At or above the limit |
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | 1.5–3.3 ng/LRangeSystem-wide | 3 ng/LNL | Within the limit |
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | 0–4.6 ng/LRangeSystem-wide | None set | Detected — no federal limit |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | 0.85–2.5 ng/LRangeSystem-wide | None set | Detected — no federal limit |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | 2.3–6.2 ng/LRangeSystem-wide | None set | Detected — no federal limit |
| Perfluoropentanesulfonic acid (PFPeS)Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' | 0–0.93 ng/LRangeSystem-wide | None set | Detected — no federal limit |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | 2.4–6.4 ng/LRangeSystem-wide | None set | Detected — no federal limit |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | 0–4.1 ng/LRangeSystem-wide | 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. | 2.4–7.5 pCi/LRangeCrescenta Valley Water District | 15 pCi/LMCL | Within the limit |
| Gross Beta Particle ActivityGross beta particle activity — a combined measure of beta-emitting radioactive substances. | 0–6 pCi/LRangeMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 15–15 pCi/LRangeCrescenta Valley Water District | 20 pCi/LMCL | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 0–4.9 ug/LRangeCrescenta Valley Water District | None set | Within the limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | 0–0.15 mg/LRangeCrescenta Valley Water District | 2 mg/LMCL | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.56 ug/L90th percentileAt the tap | None set | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 0.115 mg/LReported levelMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
+By source (2)— Metropolitan Water District's F. E. Weymouth Plant, Crescenta Valley Water District
| |||
| BoronA naturally occurring element from rock and soil. | 140 ug/LReported levelMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
+By source (2)— Metropolitan Water District's F. E. Weymouth Plant, Crescenta Valley Water District
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 36–100 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.24–1.6 ug/LRangeCrescenta Valley Water District | 0.02 ug/LPublic health goal | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 12–35 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| PotassiumA naturally occurring mineral from rock and soil. | 3.2–4.1 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| SodiumA naturally occurring salt component. | 39–55 mg/LRangeMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
+By source (2)— Metropolitan Water District's F. E. Weymouth Plant, Crescenta Valley Water District
| |||
| Vanadium | 0–5.1 ug/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TetrachloroethyleneAn industrial solvent (PCE) used in dry cleaning and degreasing. | 0–0.54 ug/LRangeCrescenta Valley Water District | 5 ug/LMCL | Within the limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | Not detected NTUReported levelCrescenta Valley Water District | None set | None detected |
| AlkalinityA measure of the water's capacity to neutralize acids. | 150–220 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| Bicarbonate | 150–220 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 140–390 mg/LRangeCrescenta Valley Water District | None set | Detected — no federal limit |
+By source (2)— Crescenta Valley Water District, Metropolitan Water District's F. E. Weymouth Plant
| |||
| pHA measure of how acidic or basic the water is. | 8.6Reported levelMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
+By source (2)— Metropolitan Water District's F. E. Weymouth Plant, Crescenta Valley Water District
| |||
| TOCTotal organic carbon — a measure of organic material dissolved in the water. | 1.8–3RangeMetropolitan Water District's F. E. Weymouth Plant | None set | Detected — no federal limit |
Source: Crescenta Valley Cwd — La Crescenta, Ca, CA's 2022 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 Crescenta Valley Cwd — La Crescenta, Ca, CA's water
+Is Crescenta Valley Cwd — La Crescenta, Ca, CA tap water safe to drink in 2022?
The 2022 Consumer Confidence Report for the Crescenta Valley Cwd — La Crescenta, Ca, CA water utility lists 4 contaminants at or above the federal limit: Nitrate, Bromate, PFOA, and PFOS. 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 Crescenta Valley Cwd — La Crescenta, Ca, CA tap water?
36 contaminants were measured in Crescenta Valley Cwd — La Crescenta, Ca, CA's 2022 Consumer Confidence Report, spanning metals, pfas ("forever chemicals"), and physical & aggregate. 10 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 Crescenta Valley Cwd — La Crescenta, Ca, CA tap water?
4 contaminants in Crescenta Valley Cwd — La Crescenta, Ca, CA's 2022 report sit at or above the federal limit: Nitrate (3.3× the limit); Bromate (1.2× the limit); PFOA (1.1× the limit); PFOS (1.0× 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 Crescenta Valley Cwd — La Crescenta, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2022 report is Nitrate, at 3.3× the federal threshold. It belongs to the inorganic chemicals family of contaminants.
+Are any contaminants in Crescenta Valley Cwd — La Crescenta, Ca, 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 Crescenta Valley Cwd — La Crescenta, Ca, CA's 2022 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 Crescenta Valley Cwd — La Crescenta, 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 2022 report; a new report will replace it once the utility publishes its next annual update.
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