What was found in ZIP 11530
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 | 5760.5 µg/L 58% of the EPA limit 10000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 8474.5 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 5783 µg/L 58% of the EPA limit 10000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 7365 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 3/3 | SYR4 |
| Nitrite | 147 µg/L 15% of the EPA limit 1000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Copper | 143.5 µg/L 11% of the EPA limit 1300 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| Fluoride | 127 µg/L 3.2% of the EPA limit 4000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Barium | 62.05 µg/L 3.1% of the EPA limit 2000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| cis-1,2-Dichloroethylene | 23.41 µg/L 33% of the EPA limit 70 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| 1,1-Dichloroethylene | 7.5 µg/L 107% of the EPA limit, at the 95th percentile of samples — 7 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 18.265 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 3/3 | SYR4 |
| Trichloroethylene | 10.035 µg/L 201% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 17.02 µg/L — HEMPSTEAD (V) · 56,000 people · 2019 | 3/3 | SYR4 |
| Tetrachloroethylene | 16.94 µg/L 339% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| TTHM | 12.21 µg/L 15% of the EPA limit 80 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 2/3 | SYR4 |
| Toluene | 11.3 µg/L 1.1% of the EPA limit 1000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| 1,1,1-Trichloroethane | 1.7 µg/L 0.9% of the EPA limit 200 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 7.72 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 7.06016 µg/L 24% of the EPA limit 30 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| Lead | 4.77 µg/L 32% of the EPA limit 15 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 6.17 µg/L — HEMPSTEAD (V) · 56,000 people · 2019 | 3/3 | SYR4 |
| Bromoform | 5.9 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 5.658 pCi/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.19 pCi/L 15% of the EPA limit 15 pCi/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 5.587 pCi/L — HEMPSTEAD (V) · 56,000 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 4.67 pCi/L 93% of the EPA limit 5 pCi/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 4.1 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.835 µg/L 6.4% of the EPA limit 60 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2018 | 1/3 | SYR4 |
| Chloroform | 3.26 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 2/3 | SYR4 |
| Selenium | 2.86 µg/L 5.7% of the EPA limit 50 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 3.0505 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 3 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2018 | 1/3 | SYR4 |
| Trichloroacetic Acid | 2.98 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2018 | 1/3 | SYR4 |
| Dibromoacetic Acid | 2.94 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2018 | 1/3 | SYR4 |
| Vinyl Chloride | 1.8 µg/L 90% of the EPA limit 2 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 2.2 µg/L — HEMPSTEAD (V) · 56,000 people · 2019 | 2/3 | SYR4 |
| Carbon Tetrachloride | 2.02 µg/L 40% of the EPA limit 5 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 1.605 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Arsenic | 1.5 µg/L 15% of the EPA limit 10 µg/L Highest in the ZIP: HEMPSTEAD (V) · 56,000 people · 2019 | 1/3 | SYR4 |
| Chlorobenzene | 1.4975 µg/L 1.5% of the EPA limit 100 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| 1,1,2-Trichloroethane | 1.2 µg/L 24% of the EPA limit 5 µg/L Highest in the ZIP: GARDEN CITY (V) · 23,272 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2018 | 1/3 | SYR4 |
| 1,2-Dichloroethane | 0.7490 µg/L 15% of the EPA limit 5 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 0.9210 µg/L — GARDEN CITY (V) · 23,272 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7600 µg/L 13% of the EPA limit 6 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| P-Dichlorobenzene | 0.7000 µg/L 0.9% of the EPA limit 75 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Benzene | 0.6670 µg/L 13% of the EPA limit 5 µg/L Highest in the ZIP: HEMPSTEAD (V) · 56,000 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 0.6425 µg/L 13% of the EPA limit 5 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Thallium, Total | 0.3400 µg/L 17% of the EPA limit 2 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019
Highest in the ZIP: 0.6320 µg/L — HEMPSTEAD (V) · 56,000 people · 2019 | 3/3 | SYR4 |
| Mercury | 0.3000 µg/L 15% of the EPA limit 2 µg/L Highest in the ZIP: GARDEN CITY (V) · 23,272 people · 2019 | 1/3 | SYR4 |
| Pentachlorophenol | 0.1457 µg/L 15% of the EPA limit 1 µg/L Highest in the ZIP: GARDEN CITY (V) · 23,272 people · 2018 | 1/3 | SYR4 |
| Endrin | 0.0630 µg/L 3.2% of the EPA limit 2 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Heptachlor Epoxide | 0.0435 µg/L 22% of the EPA limit 0.2000 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 1/3 | SYR4 |
| Ethylene Dibromide | 0.0300 µg/L 60% of the EPA limit 0.0500 µg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2019 | 2/3 | SYR4 |
| PFOA | 0.0100 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| Pfpea | 0.0095 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024
Highest in the ZIP: 0.0093 mg/L — GARDEN CITY (V) · 23,272 people · 2025 | 3/3 | LCR |
| Pfhxa | 0.0074 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| Pfba | 0.0071 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| PFNA | 0.0071 µg/L No EPA limit set Highest in the ZIP: GARDEN CITY (V) · 23,272 people · 2025 | 1/3 | UCMR-5 |
| PFOS | 0.0061 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 3/3 | UCMR-5 |
| PFHXS | 0.0045 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| PFBS | 0.0036 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
| Pfhpa | 0.0034 µg/L No EPA limit set Main supplier: WA OF WESTERN NASSAU · 120,000 people · 2024 | 1/3 | UCMR-5 |
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 11530
| Supplier | State | Population served |
|---|---|---|
| WA OF WESTERN NASSAU | NY | 120,000 |
| HEMPSTEAD (V) | NY | 56,000 |
| GARDEN CITY (V) | NY | 23,272 |
Frequently asked questions about ZIP 11530 tap water
Is the tap water in ZIP 11530 safe to drink?
EPA testing detected 54 contaminants across the water suppliers serving ZIP 11530. 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 11530?
3 public water suppliers report EPA drinking-water monitoring for ZIP 11530. Each is listed above with its population served.
What contaminants are in ZIP 11530's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Nitrite, Copper, Fluoride, and others across this ZIP's suppliers. The full list with levels and sources is above.