What was found in New Hyde Park's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 6700 µg/L 67% of the EPA limit 10000 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 6576.5 µg/L 66% of the EPA limit 10000 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Nitrite | 392 µg/L 39% of the EPA limit 1000 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Fluoride | 140 µg/L 3.5% of the EPA limit 4000 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Copper | 61 µg/L 4.7% of the EPA limit 1300 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Barium | 30.4 µg/L 1.5% of the EPA limit 2000 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 9.285 µg/L 186% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 6.39 µg/L 128% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 4.265 pCi/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 3.7 µg/L 5.3% of the EPA limit 70 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| 1,1,2-Trichloroethane | 3.61 µg/L 72% of the EPA limit 5 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 3.55 µg/L 12% of the EPA limit 30 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 3.275 µg/L 6.6% of the EPA limit 50 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 2.9 µg/L 41% of the EPA limit 7 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Chlorobenzene | 2.4 µg/L 2.4% of the EPA limit 100 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2.183 pCi/L 44% of the EPA limit 5 pCi/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.995 µg/L 20% of the EPA limit 10 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Lead | 1.65 µg/L 11% of the EPA limit 15 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| TTHM | 1.4 µg/L 1.7% of the EPA limit 80 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| P-Dichlorobenzene | 1.26 µg/L 1.7% of the EPA limit 75 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.16 pCi/L 7.7% of the EPA limit 15 pCi/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 0.9950 µg/L 0.5% of the EPA limit 200 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Thallium, Total | 0.8481 µg/L 42% of the EPA limit 2 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.8300 µg/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Vinyl Chloride | 0.6850 µg/L 34% of the EPA limit 2 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.6700 µg/L 0.2% of the EPA limit 400 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 0.5400 µg/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2019 | 1/1 | SYR4 |
| PFOA | 0.0190 µg/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0069 µg/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0043 µg/L No EPA limit set Main supplier: GARDEN CITY PARK WD · 18,000 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0026 mg/L 17% of the EPA limit 0.0150 mg/L Main supplier: GARDEN CITY PARK WD · 18,000 people · 2023 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving New Hyde Park
| Supplier | Population served |
|---|---|
| GARDEN CITY PARK WD | 18,000 |
Frequently asked questions about New Hyde Park tap water
Is New Hyde Park tap water safe to drink?
EPA testing detected 32 contaminants in the water serving New Hyde Park. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve New Hyde Park?
1 public water supplier report drinking-water monitoring for New Hyde Park, New York to the EPA. Each is listed above with its population served.
What contaminants are in New Hyde Park's water?
The contaminants EPA monitoring detected in New Hyde Park include Nitrate, Nitrate-Nitrite, Nitrite, Fluoride, Copper. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.