What was found in ZIP 11758
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 | 230 µg/L 2.3% of the EPA limit 10000 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
Highest in the ZIP: 1160 µg/L — MASSAPEQUA WD · 43,000 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 226 µg/L 2.3% of the EPA limit 10000 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Fluoride | 160 µg/L 4% of the EPA limit 4000 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Copper | 60.84 µg/L 4.7% of the EPA limit 1300 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
Highest in the ZIP: 147 µg/L — MASSAPEQUA WD · 43,000 people · 2019 | 2/2 | SYR4 |
| Lithium | 139 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2025 | 1/2 | UCMR-5 |
| Trichloroethylene | 13.645 µg/L 273% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Cyanide | 11.2 µg/L 5.6% of the EPA limit 200 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Barium | 10.4 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Lead | 9.14 µg/L 61% of the EPA limit 15 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.7175 pCi/L 51% of the EPA limit 15 pCi/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| TTHM | 4.09 µg/L 5.1% of the EPA limit 80 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.6625 pCi/L 53% of the EPA limit 5 pCi/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 2.1685 pCi/L No EPA limit set Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
Highest in the ZIP: 2.4465 pCi/L — MASSAPEQUA WD · 43,000 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 2.217 µg/L 7.4% of the EPA limit 30 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Cadmium | 2.16 µg/L 43% of the EPA limit 5 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 2/2 | SYR4 |
| Chloroform | 2.1 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 1.675 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Beryllium, Total | 1.62 µg/L 41% of the EPA limit 4 µg/L Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2019 | 1/2 | SYR4 |
| Arsenic | 1.53 µg/L 15% of the EPA limit 10 µg/L Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2019 | 1/2 | SYR4 |
| Tetrachloroethylene | 1.361 µg/L 27% of the EPA limit 5 µg/L Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.4400 µg/L 22% of the EPA limit 2 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
Highest in the ZIP: 1.3 µg/L — MASSAPEQUA WD · 43,000 people · 2019 | 2/2 | SYR4 |
| Toluene | 1.275 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 1.225 µg/L No EPA limit set Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.2 µg/L 20% of the EPA limit 6 µg/L Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 0.9600 µg/L 1.6% of the EPA limit 60 µg/L Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2018 | 1/2 | SYR4 |
| Dichloromethane | 0.7000 µg/L 14% of the EPA limit 5 µg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 0.3600 µg/L No EPA limit set Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2018 | 1/2 | SYR4 |
| Monobromoacetic Acid | 0.3100 µg/L No EPA limit set Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2018 | 1/2 | SYR4 |
| Dichloroacetic Acid | 0.2900 µg/L No EPA limit set Highest in the ZIP: MASSAPEQUA WD · 43,000 people · 2018 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2025 | 2/2 | 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 11758
| Supplier | State | Population served |
|---|---|---|
| LIBERTY UTILITIES NEW YORK - MERRICK | NY | 135,000 |
| MASSAPEQUA WD | NY | 43,000 |
Frequently asked questions about ZIP 11758 tap water
Is the tap water in ZIP 11758 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 11758. 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 11758?
2 public water suppliers report EPA drinking-water monitoring for ZIP 11758. Each is listed above with its population served.
What contaminants are in ZIP 11758's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.