Tap Water Quality Report
Tap water quality in HEMPSTEAD (V), New York
Tap water in HEMPSTEAD (V), New York receives a grade of D (69/100) from TapWaterSafety.org. It's served by HEMPSTEAD (V). The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Radium, combined (-226 and -228) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in HEMPSTEAD (V)'s tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving HEMPSTEAD (V).
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.047 ppt, 47x above the EWG health guideline of 0.001 ppt.
Radium, combined (-226 and -228) significantly above health guideline
Moderate concernRadium, combined (-226 and -228) detected at 1.39 pCi/L, 28x above the EWG health guideline of 0.05 pCi/L.
EPA compliance record
Official U.S. EPA records for HEMPSTEAD (V) (system ID NY2902827) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Lead and Copper Rule Revisions | Missed reporting | 10/17/2024 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for HEMPSTEAD (V)
Filters matched to the specific contaminants in HEMPSTEAD (V)'s water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Reverse osmosis certified for radium (NSF/ANSI 58)
$429-$750RO certified for radium 226/228 reduces it; ion-exchange water softeners also reduce radium.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in HEMPSTEAD (V)'s tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.047 ppt | 0.001 | 10.0 | — | — | — | — | 47× over |
| Radium, combined (-226 and -228) Radiological |
1.39 pCi/L | 0.05 | 5.0 | — | — | — | — | 28× over |
| 1,4-Dioxane Semi-volatile organic compound |
2.81 ppb | 0.35 | — | — | 50 | 1 | — | 8.0× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
0.43 ppb | 0.06 | — | — | — | — | — | 7.2× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.033 ppt | 0.006 | 10.0 | — | — | — | — | 5.5× over |
| Chromium (hexavalent) Heavy metal |
0.0945 ppb | 0.02 | — | — | — | — | — | 4.7× over |
| Uranium Radiological |
1.76 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 4.1× over |
| Nitrate and nitrite Inorganic |
0.193 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.4× over |
| Nitrate Inorganic |
0.192 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.4× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.1 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 1.1× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.168 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Chlorate Disinfection byproduct |
105.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
0.0242 ppb | 0.15 | 80.0 | 100 | — | — | — | Below guideline |
| Dibromochloromethane Disinfection byproduct |
0.0155 ppb | 0.1 | — | — | — | — | — | Below guideline |
| Bromodichloromethane Disinfection byproduct |
0.00342 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Bromoform Disinfection byproduct |
0.00513 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
4.99 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Cobalt Other |
0.363 ppb | 70.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.214 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.4 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0204 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.335 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from HEMPSTEAD (V).