What was found in Garden City'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 | 8474.5 µg/L 85% of the EPA limit 10000 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 7365 µg/L 74% of the EPA limit 10000 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Copper | 80.35 µg/L 6.2% of the EPA limit 1300 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 18.265 µg/L 261% of the EPA limit, at the 95th percentile of samples — 7 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Barium | 17.7 µg/L 0.9% of the EPA limit 2000 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 14.86 µg/L 297% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 7.72 µg/L 3.9% of the EPA limit 200 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 5.8 µg/L 8.3% of the EPA limit 70 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 5.58146 µg/L 19% of the EPA limit 30 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2017 | 1/1 | SYR4 |
| Tetrachloroethylene | 4.8 µg/L 96% of the EPA limit 5 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Lead | 4.672 µg/L 31% of the EPA limit 15 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.9385 pCi/L 79% of the EPA limit 5 pCi/L Main supplier: GARDEN CITY (V) · 23,272 people · 2017 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 3.66 pCi/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2017 | 1/1 | SYR4 |
| TTHM | 3.068 µg/L 3.8% of the EPA limit 80 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Selenium | 3.0505 µg/L 6.1% of the EPA limit 50 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.346 µg/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 2.0095 µg/L 40% of the EPA limit 5 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.95 µg/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Chloroform | 1.66 µg/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.656 pCi/L 11% of the EPA limit 15 pCi/L Main supplier: GARDEN CITY (V) · 23,272 people · 2017 | 1/1 | SYR4 |
| 1,1,2-Trichloroethane | 1.2 µg/L 24% of the EPA limit 5 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| 1,2-Dichloroethane | 0.9210 µg/L 18% of the EPA limit 5 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Thallium, Total | 0.5695 µg/L 28% of the EPA limit 2 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Mercury | 0.3000 µg/L 15% of the EPA limit 2 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Pentachlorophenol | 0.1457 µg/L 15% of the EPA limit 1 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2018 | 1/1 | SYR4 |
| Ethylene Dibromide | 0.0200 µg/L 40% of the EPA limit 0.0500 µg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0093 mg/L 62% of the EPA limit 0.0150 mg/L Main supplier: GARDEN CITY (V) · 23,272 people · 2025 | 1/1 | LCR |
| PFNA | 0.0071 µg/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0043 µg/L No EPA limit set Main supplier: GARDEN CITY (V) · 23,272 people · 2025 | 1/1 | 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.
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 Garden City
| Supplier | Population served |
|---|---|
| GARDEN CITY (V) | 23,272 |
Frequently asked questions about Garden City tap water
Is Garden City tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Garden City. 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 Garden City?
1 public water supplier report drinking-water monitoring for Garden City, New York to the EPA. Each is listed above with its population served.
What contaminants are in Garden City's water?
The contaminants EPA monitoring detected in Garden City include Nitrate, Nitrate-Nitrite, Copper, 1,1-Dichloroethylene, Barium. 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.