← Hempstead, NY

Tap water quality report

ZIP 11710 — Hempstead, NY

EPA monitoring across the 1 water supplier serving ZIP 11710 in Hempstead, NY detected 22 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
135,000
people served
22
contaminants found

What was found in ZIP 11710

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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
230 µg/L 2.3%
of the EPA limit 10000 µg/L
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 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
1/1 SYR4
Fluoride
160 µg/L 4%
of the EPA limit 4000 µg/L
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 SYR4
Lithium
139 µg/L
No EPA limit set
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2025
1/1 UCMR-5
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
1/1 SYR4
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
1/1 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
1/1 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
1/1 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
1/1 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
1/1 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
1/1 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
1/1 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
1/1 SYR4
Gross Beta Particle Activity
2.1685 pCi/L
No EPA limit set
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 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
1/1 SYR4
Chloroform
2.1 µg/L
No EPA limit set
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 SYR4
Bromodichloromethane
1.675 µg/L
No EPA limit set
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 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
1/1 SYR4
Dibromochloromethane
1.225 µg/L
No EPA limit set
Main supplier: LIBERTY UTILITIES NEW YORK - MERRICK · 135,000 people · 2019
1/1 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
1/1 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
1/1 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
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 11710

SupplierStatePopulation served
LIBERTY UTILITIES NEW YORK - MERRICK NY 135,000

Frequently asked questions about ZIP 11710 tap water

Is the tap water in ZIP 11710 safe to drink?

EPA testing detected 22 contaminants across the water suppliers serving ZIP 11710. 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 11710?

1 public water supplier report EPA drinking-water monitoring for ZIP 11710. Each is listed above with its population served.

What contaminants are in ZIP 11710's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Lithium, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.