Drinking water quality · 2024
· Verified
What's in Yonkers, NY tap water
26 contaminants were measured in the Yonkers, NY water system's 2024 annual report. Each is shown below against its federal limit — 3 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 26
- Over federal limit
- 3
- Approaching the limit
- 1
- Worst contaminant
- Turbidity
- Service area
- NY
Where your water comes from · EPA SDWIS
Yonkers, NY buys its drinking water from WESTCHESTER COUNTY WD #1, GREENBURGH CONSOLIDATED WD #1, and 1 more.
Source
Treatment
- WATER TREATMENT PLANT CRISFIELD LS
- WATER TREATMENT PLANT YONKERS
- WATER TREATMENT PLANT TUCKAHOE ROAD LS
- + 3 more
Distribution
Also buys water from WESTCHESTER COUNTY WD #1, GREENBURGH CONSOLIDATED WD #1, and 1 more.
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.
- Treatment technique violationHealth-based2 violations on record · most recent May 2015resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 1.5 NTUMaximumSystem-wide | None set | At or above the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 12.1–23.8 mg/LRangeSystem-wide | None set | Detected — no federal limit |
| ColorA measure of visible tint in the water. | 5MaximumSystem-wide | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 6.97–7.8RangeSystem-wide | None set | Detected — no federal limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 73.6–110 uS/cmRangeSystem-wide | None set | Detected — no federal limit |
| TemperatureThe measured temperature of the water sample. | 4–21RangeSystem-wide | 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. | 5 mg/LMaximumSystem-wide | 4 mg/LMCL | At or above the limit |
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 0.105 mg/LMaximumSystem-wide | 10 mg/LMCL | Within the limit |
| ChlorideA naturally occurring salt compound. | 12.7 mg/LMaximumSystem-wide | None set | Detected — no federal limit |
| SulfateA naturally occurring mineral from rock and soil. | 3.72–3.82 mg/LRangeSystem-wide | None set | Detected — no federal limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 11.8–74.3 ug/LRangeSystem-wide | None set | At or above the limit |
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 25.2–64.7 ug/LRangeSystem-wide | None set | Approaching the limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Free | 0.69–2.36 mg/LRangeSystem-wide | 4 mg/LMCL | Within the limit |
| Dehp | 0.85 ug/LMaximumSystem-wide | None set | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.00714 mg/L90th percentileAt the tap | 0.015 mg/LAction level | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.0425–0.28 mg/LRangeSystem-wide | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 14.1 ug/LMaximumSystem-wide | None set | Within the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 17.1 ug/LMaximumSystem-wide | None set | Detected — no federal limit |
| IronA naturally occurring metal common in groundwater. | 39 ug/LMaximumSystem-wide | None set | Detected — no federal limit |
| ManganeseA naturally occurring metal from soil and rock. | 8.4–23.2 ug/LRangeSystem-wide | None set | Detected — no federal limit |
| NickelA metal from natural deposits and industrial discharge. | 0.29 ug/LMaximumSystem-wide | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 9.99 mg/LMaximumSystem-wide | None set | Detected — no federal limit |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | 1.15 ug/LMaximumSystem-wide | 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. | 1.9 ng/LReported levelSystem-wide | 4 ng/LMCL | Within the limit |
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 1.9 ng/LReported levelSystem-wide | 4 ng/LMCL | Within the limit |
| PFAS | 1.9 ng/LReported levelSystem-wide | None set | Detected — no federal limit |
People also ask about Yonkers, NY's water
+Is Yonkers, NY tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Yonkers, NY water utility lists 3 contaminants at or above the federal limit: Turbidity, Fluoride, and HAA5. 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 Yonkers, NY tap water?
26 contaminants were measured in Yonkers, NY's 2024 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 Yonkers, NY tap water?
3 contaminants in Yonkers, NY's 2024 report sit at or above the federal limit: Turbidity (1.5× the limit); Fluoride (1.3× the limit); HAA5 (1.2× 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 Yonkers, NY tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Turbidity, at 1.5× the federal threshold. It belongs to the physical & aggregate family of contaminants.
+Are any contaminants in Yonkers, NY 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 Yonkers, NY's 2024 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 Yonkers, NY'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 2024 report; a new report will replace it once the utility publishes its next annual update.