Water Quality in Merrick, NY (11577)

EPA violation data for public water systems serving ZIP code 11577.

Past Health-Based Violations

6 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 238 monitoring/reporting violations.

More violations than 99% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

13,077

Population

9

Water Systems

244

Violations (5yr)

6

Health-Based

Location

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Water Systems Serving This Area (9)

Liberty Utilities New York - Lynbrook

3 health-based
Groundwater 220,000 people served
3 violations (5yr) · 3 health-based · All resolved
Lead tested: 4.2 ppb (limit: 15 ppb) ✓

Liberty Utilities New York - Merrick

3 health-based
Groundwater 135,000 people served
3 violations (5yr) · 3 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓

Wa Of Western Nassau

Groundwater 120,000 people served
0 violations
Lead tested: 1.4 ppb (limit: 15 ppb) ✓

Town Of Hempstead Water Department

Groundwater 110,000 people served
0 violations

Albertson Wd

All resolved
Groundwater 13,500 people served
225 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓

Shepherds Run

All resolved
Groundwater 150 people served
13 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓

Brookhaven Medical Associates

Groundwater 100 people served
0 violations

Zzzpine Crest Lodge

Groundwater 50 people served
0 violations

Pleasant Valley Garden Apartments

Groundwater under influence of surface water 30 people served
0 violations

Contaminants Found

Lead and Copper RuleHealth-Based

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

7 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

8 violations
All resolved
ToxapheneMonitoring
4 violations
All resolved
ETHYLENE DIBROMIDEMonitoring
4 violations
All resolved
EndrinMonitoring
4 violations
All resolved
MethoxychlorMonitoring
4 violations
All resolved
2,4,5-TPMonitoring
4 violations
All resolved
BHC-GAMMAMonitoring
4 violations
All resolved
OXAMYLMonitoring
4 violations
All resolved
Di(2-ethylhexyl) adipateMonitoring
4 violations
All resolved
Total Polychlorinated Biphenyls (PCB)Monitoring
4 violations
All resolved
Di(2-ethylhexyl) phthalateMonitoring
4 violations
All resolved
HEXACHLOROBENZENEMonitoring
4 violations
All resolved
PentachlorophenolMonitoring
4 violations
All resolved
SimazineMonitoring
4 violations
All resolved
ChlordaneMonitoring
4 violations
All resolved
PicloramMonitoring
4 violations
All resolved
AtrazineMonitoring
4 violations
All resolved
CarbofuranMonitoring
4 violations
All resolved
Heptachlor epoxideMonitoring
4 violations
All resolved
Benzo(a)pyreneMonitoring
4 violations
All resolved
LASSOMonitoring
4 violations
All resolved
2,4-DMonitoring
4 violations
All resolved
DinosebMonitoring
4 violations
All resolved
Aldicarb sulfoxideMonitoring
4 violations
All resolved
DalaponMonitoring
4 violations
All resolved
AldicarbMonitoring
4 violations
All resolved
HeptachlorMonitoring
4 violations
All resolved
Aldicarb sulfoneMonitoring
4 violations
All resolved
HexachlorocyclopentadieneMonitoring
4 violations
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

3 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
1 violation
All resolved
TTHMMonitoring
1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
4.2 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Merrick (11577) has more violations than 99% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 244.

Fewer violations 99th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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