Perfluorooctanoic acid
7.6ng/L
Each block = 4.0 ng/L federal MCL (2024)
Short answer: PFOA is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); 1 more is detected with no federal limit, and everything else measured is within its reference or not detected. Westbury WD serves 20,500 residents.
Your water bill or annual water quality report names your actual supplier.
Also supplies: New Cassel
The bar is drawn in blocks of the 4.0 ng/L federal MCL (2024), so the length shows how far above it the result sits.
7.6ng/L
Each block = 4.0 ng/L federal MCL (2024)
WESTBURY WD (EPA PWSID NY2902856) delivers groundwater to 20,500 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
A tap test can confirm levels at your home before you choose treatment.
PFOA 7.6 ng/L, above the 4 ng/L limit (+2 more PFAS detected)
Each card names which Westbury findings its current certification covers, and which it doesn't.
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PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Westbury, PFOA 7.6 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing. WESTBURY WD (PWSID NY2902856) has a Purity Score of 59/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap.
WESTBURY WD (PWS ID NY2902856) is the public water system on record for Westbury, New York, serving about 20,500 people. Confirm the utility on your water bill before acting on a specific finding.
Groundwater (primary source of record in EPA SDWIS).
Yes. In EPA's UCMR 5 testing (2024-01-09 to 2025-12-09), PFOA was measured at 7.6 ng/L against a 4 ng/L federal limit. PFHxA (3.3 ng/L, below the 400,000 ng/L state limit) was also detected. PFPeA (3.5 ng/L) was also detected; it has no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Lead is not in Westbury's current published record. Lead usually enters from a building's own pipes and fixtures, so a certified home test is the way to know yours.
PurityMap's current record for Westbury holds 31 findings: 1 above a reference, 1 detected within the reference, 1 detected with no limit and 28 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
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| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 7.6 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorohexanoic acid (PFHxA) | 3.3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoropentanoic acid (PFPeA) | 3.5 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2021–2023 monitoring period | Lead & Copper Rule 90th-percentile: WESTBURY WD (NY2902856) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-09 to 2025-12-09 | UCMR5 Analytical Results: WESTBURY WD (NY2902856) |
Perfluorohexanoic acid (PFHxA)
Perfluoropentanoic acid (PFPeA)
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)
Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify; a non-detect is not a guarantee of zero.
UCMR5 Analytical Results
UCMR5 Analytical Results: WESTBURY WD (NY2902856)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: WESTBURY WD (NY2902856)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Start with the hot-or-cold tap check. Where Westbury WD reported something related, it's shown below.
Lead at Westbury WD: not detected (90th percentile, 2021–2023 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.