Is Mill Neck, NY Tap Water Safe? Quality & Contaminants

What was found in Mill Neck'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	5000 µg/L 50% of the EPA limit 10000 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	2/2	SYR4
Nitrate-Nitrite	4784 µg/L 48% of the EPA limit 10000 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	2/2	SYR4
Copper	161.675 µg/L 12% of the EPA limit 1300 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	2/2	SYR4
Fluoride	100 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019 Highest in the city: 110 µg/L — LIBERTY UTILITIES NEW YORK - MILL NECK · 280 people · 2019	2/2	SYR4
Barium	84.1 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	2/2	SYR4
Lead	16.556 µg/L 110% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2015	2/2	SYR4
Chromium	9.9 µg/L 9.9% of the EPA limit 100 µg/L Highest in the city: LIBERTY UTILITIES NEW YORK - MILL NECK · 280 people · 2019	1/2	SYR4
Tetrachloroethylene	5.885 µg/L 118% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
Combined Uranium	5.27414 µg/L 18% of the EPA limit 30 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2017	1/2	SYR4
cis-1,2-Dichloroethylene	4.49 µg/L 6.4% of the EPA limit 70 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
Gross Beta Particle Activity	2.5875 pCi/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2017 Highest in the city: 3.08 pCi/L — LIBERTY UTILITIES NEW YORK - MILL NECK · 280 people · 2018	2/2	SYR4
Trichloroethylene	2.14 µg/L 43% of the EPA limit 5 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
Bromodichloromethane	0.8500 µg/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
Chloroform	0.7200 µg/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
Dibromochloromethane	0.7200 µg/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
1,1-Dichloroethylene	0.7000 µg/L 10% of the EPA limit 7 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
1,2-Dichloroethane	0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2019	1/2	SYR4
PFNA	0.0296 µg/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2024	1/2	UCMR-5
PFHXS	0.0045 µg/L No EPA limit set Main supplier: LOCUST VALLEY WD · 7,500 people · 2024	1/2	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LOCUST VALLEY WD · 7,500 people · 2023 Highest in the city: 0.0042 mg/L — LIBERTY UTILITIES NEW YORK - MILL NECK · 280 people · 2023	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. 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 Mill Neck

Supplier	Population served
LOCUST VALLEY WD	7,500
LIBERTY UTILITIES NEW YORK - MILL NECK	280

Frequently asked questions about Mill Neck tap water

Is Mill Neck tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Mill Neck. 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 Mill Neck?

2 public water suppliers report drinking-water monitoring for Mill Neck, New York to the EPA. Each is listed above with its population served.

What contaminants are in Mill Neck's water?

The contaminants EPA monitoring detected in Mill Neck include Nitrate, Nitrate-Nitrite, Copper, Fluoride, 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.