What was found in ZIP 11791
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 | 7510 µg/L 75% of the EPA limit 10000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 6256 µg/L 63% of the EPA limit 10000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Copper | 225.55 µg/L 17% of the EPA limit 1300 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Fluoride | 139 µg/L 3.5% of the EPA limit 4000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Nitrite | 52.65 µg/L 5.3% of the EPA limit 1000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Chromium | 16 µg/L 16% of the EPA limit 100 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Barium | 14.965 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 13.23 µg/L 189% of the EPA limit, at the 95th percentile of samples — 7 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 13.2 µg/L 264% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 10.65 µg/L 107% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Lead | 7.47 µg/L 50% of the EPA limit 15 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 7.15 µg/L 143% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 6.64 µg/L 3.3% of the EPA limit 200 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| 1,1,2-Trichloroethane | 4.353 µg/L 87% of the EPA limit 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| TTHM | 3.98 µg/L 5% of the EPA limit 80 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 3.9 µg/L 78% of the EPA limit 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| 1,2-Dichloropropane | 3.5 µg/L 70% of the EPA limit 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 2.84 µg/L 5.7% of the EPA limit 50 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.5 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Simazine | 2.174 µg/L 54% of the EPA limit 4 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.83 pCi/L 37% of the EPA limit 5 pCi/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Antimony, Total | 1.731 µg/L 29% of the EPA limit 6 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 1.372 pCi/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| 1,2-Dichloroethane | 1.3 µg/L 26% of the EPA limit 5 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 1.214 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 1.2 µg/L 1.7% of the EPA limit 70 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Toluene | 1.09 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Chloroform | 0.7810 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Thallium, Total | 0.7710 µg/L 39% of the EPA limit 2 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 0.7170 µg/L 2.4% of the EPA limit 30 µg/L Main supplier: JERICHO WD · 58,000 people · 2016 | 1/1 | SYR4 |
| Ethylbenzene | 0.6000 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.5808 µg/L 19% of the EPA limit 3 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 0.5800 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Beryllium, Total | 0.3400 µg/L 8.5% of the EPA limit 4 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0670 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2025 | 1/1 | UCMR-5 |
| Pentachlorophenol | 0.0563 µg/L 5.6% of the EPA limit 1 µg/L Main supplier: JERICHO WD · 58,000 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0370 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0180 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2025 | 1/1 | UCMR-5 |
| 6:2 Fts | 0.0099 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2025 | 1/1 | UCMR-5 |
| Pfhpa | 0.0046 µg/L No EPA limit set Main supplier: JERICHO WD · 58,000 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: JERICHO WD · 58,000 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 11791
| Supplier | State | Population served |
|---|---|---|
| JERICHO WD | NY | 58,000 |
Frequently asked questions about ZIP 11791 tap water
Is the tap water in ZIP 11791 safe to drink?
EPA testing detected 41 contaminants across the water suppliers serving ZIP 11791. 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 11791?
1 public water supplier report EPA drinking-water monitoring for ZIP 11791. Each is listed above with its population served.
What contaminants are in ZIP 11791's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Fluoride, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.