What was found in ZIP 11550
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 1966 µg/L 20% of the EPA limit 10000 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Nitrate | 1933 µg/L 19% of the EPA limit 10000 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Copper | 70.4 µg/L 5.4% of the EPA limit 1300 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 17.02 µg/L 340% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Barium | 16 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 14.425 µg/L 289% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Lead | 6.17 µg/L 41% of the EPA limit 15 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 5.81353 µg/L 19% of the EPA limit 30 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.587 pCi/L 37% of the EPA limit 15 pCi/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 4.47 pCi/L No EPA limit set Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 4.158 pCi/L 83% of the EPA limit 5 pCi/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 4 µg/L 5.7% of the EPA limit 70 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 3.515 µg/L 1.8% of the EPA limit 200 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 3.132 µg/L 45% of the EPA limit 7 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Vinyl Chloride | 2.2 µg/L 110% of the EPA limit, at the 95th percentile of samples — 2 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.5 µg/L 15% of the EPA limit 10 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| 1,1,2-Trichloroethane | 1.1 µg/L 22% of the EPA limit 5 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Benzene | 0.6670 µg/L 13% of the EPA limit 5 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Thallium, Total | 0.6320 µg/L 32% of the EPA limit 2 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2019 | 1/1 | SYR4 |
| PFOS | 0.0047 µg/L No EPA limit set Main supplier: HEMPSTEAD (V) · 56,000 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: HEMPSTEAD (V) · 56,000 people · 2025 | 1/1 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 11550
| Supplier | State | Population served |
|---|---|---|
| HEMPSTEAD (V) | NY | 56,000 |
Frequently asked questions about ZIP 11550 tap water
Is the tap water in ZIP 11550 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 11550. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 11550?
1 public water supplier report EPA drinking-water monitoring for ZIP 11550. Each is listed above with its population served.
What contaminants are in ZIP 11550's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Copper, Trichloroethylene, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.