Is Liberty Utilities New York - Merrick Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Nassau

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

health-based violations

249

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2024-07-01 → 2024-12-31
TT	Health-based	Resolved	2024-07-01 → 2024-12-31
TT	Health-based	Resolved	2024-07-01 → 2024-12-31
TT	Health-based	Resolved	2024-07-01 → 2024-12-31
TT	Health-based	Resolved	2024-07-01 → 2024-12-31
TT	Health-based	Resolved	2024-01-01 → 2024-06-30
TT	Health-based	Resolved	2024-01-01 → 2024-06-30
TT	Health-based	Resolved	2024-01-01 → 2024-06-30
TT	Health-based	Resolved	2024-01-01 → 2024-06-30
TT	Health-based	Resolved	2024-01-01 → 2024-06-30

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Trichloroethylene	13.645 µg/L 273% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 20 µg/L	252/892	SYR4	2012–2019
Lead	9.14 µg/L 61% of the EPA limit 15 µg/L worst single sample: 18.7 µg/L	145/391	SYR4	2012–2019
Copper	60.84 µg/L 4.7% of the EPA limit 1300 µg/L worst single sample: 110 µg/L	117/197	SYR4	2012–2019
Barium	10.4 µg/L 0.5% of the EPA limit 2000 µg/L worst single sample: 19 µg/L	113/191	SYR4	2012–2019
Thallium, Total	0.4400 µg/L 22% of the EPA limit 2 µg/L worst single sample: 0.5100 µg/L	79/332	SYR4	2012–2019
Nitrate	230 µg/L 2.3% of the EPA limit 10000 µg/L worst single sample: 240 µg/L	58/388	SYR4	2012–2019
Nitrate-Nitrite	226 µg/L 2.3% of the EPA limit 10000 µg/L worst single sample: 240 µg/L	29/184	SYR4	2012–2019
Gross Beta Particle Activity	2.1685 pCi/L No EPA limit set worst single sample: 4.23 pCi/L	20/20	SYR4	2016–2019
TTHM	4.09 µg/L 5.1% of the EPA limit 80 µg/L worst single sample: 5.8 µg/L	20/203	SYR4	2012–2019
Dibromochloromethane	1.225 µg/L No EPA limit set worst single sample: 1.3 µg/L	16/217	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	16/16	LCR	2025
Combined Uranium	2.217 µg/L 7.4% of the EPA limit 30 µg/L worst single sample: 3.68 µg/L	15/57	SYR4	2013–2019
Chloroform	2.1 µg/L No EPA limit set worst single sample: 2.6 µg/L	11/217	SYR4	2012–2019
Bromodichloromethane	1.675 µg/L No EPA limit set worst single sample: 1.9 µg/L	10/217	SYR4	2012–2019
Combined Radium (-226 And -228)	2.6625 pCi/L 53% of the EPA limit 5 pCi/L worst single sample: 2.68 pCi/L	6/57	SYR4	2013–2019
Fluoride	160 µg/L 4% of the EPA limit 4000 µg/L	3/189	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	7.7175 pCi/L 51% of the EPA limit 15 pCi/L worst single sample: 8.06 pCi/L	2/57	SYR4	2013–2019
Toluene	1.275 µg/L 0.1% of the EPA limit 1000 µg/L worst single sample: 1.3 µg/L	2/889	SYR4	2012–2019
Cyanide	11.2 µg/L 5.6% of the EPA limit 200 µg/L	1/188	SYR4	2012–2019
Cadmium	2.16 µg/L 43% of the EPA limit 5 µg/L	1/193	SYR4	2012–2019
Dichloromethane	0.7000 µg/L 14% of the EPA limit 5 µg/L	1/888	SYR4	2012–2019
Lithium	139 µg/L No EPA limit set	1/13	UCMR-5	2025

90 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChromiumDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: KERN, RICHARD
Phone: 516-632-2218
Email: [email protected]

Frequently asked questions about Liberty Utilities New York - Merrick

Is Liberty Utilities New York - Merrick tap water safe to drink?

EPA monitoring detected 22 contaminants in Liberty Utilities New York - Merrick's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Liberty Utilities New York - Merrick's water?

EPA monitoring detected Trichloroethylene, Lead, Copper, Barium, Thallium, Total, and others. The full list with the level and data source for each is above.

How many people does Liberty Utilities New York - Merrick serve?

Liberty Utilities New York - Merrick reports serving 135,000 people in New York, per its EPA record.

Has Liberty Utilities New York - Merrick had any water quality violations?

The EPA has 249 violations on file for Liberty Utilities New York - Merrick, of which 15 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.